Hi guys, this is my first post. English is not my native language, so sorry for any mistakes
One week ago i bought a TF300T in UK and now is with me in Spain. The first thing i did was unlocking the device and testing the CM9 rom. I restored the system and with the stock rom the device is not stable (random freezes and reboots).
Triying to get back to factory settings (to stop the reboots), i deleted the whole sd-card (internal memory) and the '/system' folder (don't know why i did it >_<).
Now, the tablet don't start. The screen show the Asus logo and the "Device is unlocked" message. I can access to the recovery (and i can change it) and to the "fastboot" mode, but the recovery can't mount the sd-card via USB, so i can't flash a new room.
I've tried to load a "system.img" via fastboot, but is useless, /system folder is still empty. To do this i've used the "mkyaffs2image" to create a system.img from an old clockworkmod backup.
In conclussion, i have this:
- Deleted /system partition
- Empty sd-card partition
- Full-functional recovery (clockworkmod and team win recovery project).
- Full-functional fastboot mode
- No access to internal memory (can't copy a new rom to internal memory)
I've been trying to create a valid system.img, but i don't how to (i've been reading about a linux tool called "mkfs.yaffs2" but the tutorial that i found seems to be useless, the tablet i still "bricked").
Can anybody help me?
Thank you
Removed see below post to push the files onto SD card
Another thing you can try is the bottom of my post:
http://forum.xda-developers.com/showthread.php?t=1680570
do you have an SD card reader or a smartphone with SDCARD slot?
with that you can send the files to the sdcard and then try to flash the ROM in recovery.
btw por que borras /SYSTEM
yo aun no agarro valor para hacer el Unlock
gierso said:
do you have an SD card reader or a smartphone with SDCARD slot?
with that you can send the files to the sdcard and then try to flash the ROM in recovery.
btw por que borras /SYSTEM
yo aun no agarro valor para hacer el Unlock
Click to expand...
Click to collapse
My thread above should work as it will allow him to push a new stock rom or CM9 onto the device to flash again.
Northern-Loop said:
Another thing you can try is the bottom of my post:
http://forum.xda-developers.com/showthread.php?t=1680570
Click to expand...
Click to collapse
I LOVE YOU.
I thought that the adb was only "usable" with the OS. I've copied the original 9.4.3.29 firmware and the green little droid is smiling me now :')
Thank you very much ^^
gierso said:
do you have an SD card reader or a smartphone with SDCARD slot?
with that you can send the files to the sdcard and then try to flash the ROM in recovery.
btw por que borras /SYSTEM
yo aun no agarro valor para hacer el Unlock
Click to expand...
Click to collapse
The problem is that the TF300 recovery can't access to the external SD card reader. The sdcard partition is the internal memory.
Lo de borrar system es para pegarme con un calcetín sucio, lo sé
KPY said:
I LOVE YOU.
I thought that the adb was only "usable" with the OS. I've copied the original 9.4.3.29 firmware and the green little droid is smiling me now :')
Thank you very much ^^
Click to expand...
Click to collapse
No problem, glad I found a solution for it.
If you have put the stock ROM on there you will loose Recovery and ROOT but its easy enough to put them back.
I'm trying different rom options, this thing reboots itself too frecuently
KPY said:
I'm trying different rom options, this thing reboots itself too frecuently
Click to expand...
Click to collapse
The Custom ROMs are still very early so if you are new to flashing I'd stick with the Stock one until the custom ones get a bit easier to restore.
The problem is that i have the reboots with the stock rom, that's why i'm testing everything
KPY said:
The problem is that i have the reboots with the stock rom, that's why i'm testing everything
Click to expand...
Click to collapse
It shouldn't reboot on stock ROM. I would say you have a faulty unit, though if you have unlocked it you might not be able to get it swapped out.
Flash the Stock ROM and DON'T Root it or flash recovery, if it still reboots its faulty.
If it doesnt reboot when its unrooted and only reboots when its rooted you have a dodgy app on there causing it
Related
Hi guys, i'm in desperate need of your help. i think my precious o3d might have been screwed.
first let me tell you what i did. as you know the internal sd card of o3d is 5gb or so and it fills up very quickly. this internal sd card is mounted as /sdcard. i have a class 10 16gb micro sd card and when i insert it, its automatically mounted as /sdcard/_ExternalSD. The applications or games, especially the ones that have external data folders which are like 1gb in size insists to be installed on /sdcard. You can't move those data folders to _ExternalSD, because then the apps doesn't work.
Then i came across this topic:
http://forum.xda-developers.com/showthread.php?t=1189701
As you can see that was exactly what i needed. I had CWM 5.0.2.0 installed so i downloaded the first .zip then copied all of the files and folders excluding the _ExternalSD folder to the external sd card then rebooted into recovery. From there i flashed the zip and rebooted again. phone booted up and all was ok and it worked. now the phone sees the external sd card as the internal one and the internal sd card was mounted as /sdcard/_ExternalSD. I then formatted the internal sd card from the settings menu because i already copied all of the stuff there to the external card. It worked fine and the internal card is formatted. After that i decided to get a nandroid backup so i opened the rom toolbox program. From the menus i selected the backup option, gave it a name, clicked ok. the phone rebooted into cwm recovery screen but nothing happened. then i noticed something was not right because there was some error lines under the cwm menus saying "E:can't mount CACHE:recovery/command" etc. Then i selected the reboot phone option but the phone rebooted right back into the CWM recovery again!! At that point i knew that i was @#?^ed.
Anyways i researched a lot and came across this thread:
http://forum.xda-developers.com/showthread.php?t=1156549
i did exactly what he said and it worked, i mean it flashed nicely. then i rebooted the phone but it booted into the recovery again!!! But this time the CWM recovery was gone and i believe this is the stock recovery screen. I can browse the menu of it and make selections but the phone boots into the recovery every time it reboots.
The recovery screen looks like this:
http://farm8.staticflickr.com/7010/6654644033_b616bc0635_z.jpg
Then i flashed the phone to the latest official firmware V21A_00, it flashed nicely but it still boots right into the recovery everytime.
Then i installed the Android SDK and tried to push the original vold.fstab file to the system using the adb command line tool but it doesn't see the phone. I think adb works only when the system boots up normally, not in the recovery mode.
I don't know if there's a way to install the CWM from the stock recovery somehow. If you know how, please tell. The CWM has more options.
I don't know what else i can do. It started to look ridiculous. If there are any experts cool enough to help please do so. I'll be waiting. Thank you...
Edit:
I also tried this:
http://forum.xda-developers.com/show....php?t=1244490
I starts just fine but get's stuck on the "RESET" command, after a while it gives "DOWNLOAD FAIL!" error. I think the phone is supposed to restart automatically but it doesn't. Manually resetting the phone doesn't work either.
I'm about to pull my hair out...
Edit 2:
I also posted on the official LG Mobile forum here:
http://www.lgforum.com/forum/boards...d-goes-into-recovery-mode-every-time-it-boots
Fingers crossed
Quite a post!
From all your post there is no mention that you formated and did a factory reset after 21a flash.
Can you please try that if you haven't?
Sent from my LG-P920 using xda premium
thank you for the reply!
i tried all 4 wipe options on the recovery screen then rebooted. it's the same, i'm back at the good old recovery again
Did you try with the external sd card out?
This is strange, usually a kdz flash coupled with a format fixes the problem.
Some how it still can't find the internal SD card.
I don't have further recommendations. Sorry
Sent from my LG-P920 using xda premium
yes i tried with the external sd card out. it didn't work..
vpamir said:
yes i tried with the external sd card out. it didn't work..
Click to expand...
Click to collapse
Hopefully someone else on this forum can suggest a way for you to unbrick.
your problem is although you have reset your phone, somehow it can't find a partition to boot from.
or
somehow the KDZ flashing is not totally successful.
good luck
If only there could be a way to be able to use the adb command from the Android SDK then i might be able to restore the vold.fstab file to its original, if the problem is that at all. Maybe then it'll work. To be able to flash the CWM Recovery again somehow might be a good thing too because it has more options like flashing .zip format roms but i have no idea how. Does anyone know if the stock recovery can flash some specifically named file to the system, does it have that kind of functionality? I'm desperate, please share your thoughts.
.............anyone?
I am sorry to say that but there is no solution for this problem yet. I have done the exact thing that you do and tried every single solution with no luck. The only way is to send it to lg repair service. My solution was to replace the mainboard.
Dostum gecmis olsun malesef tek cozum yolu anakarti degistirmek. Uzaman sayilirim android konusunda bosuna ugrasmayasin diye soyluyorum. LG servisi bile anca anakarti degistirerek cozum sunabildi. Temel problem internal karti formatlamis olman. Partititon table'i bozuyor bu islem malesef ve bu yuzden hicbir yontem ise yaramiyor.
Gecmis olsun tekrar...
so you say that the main problem was to format the internal sd card? well if formatting the internal sd card bricks the phone then why the hell is there an option to format it in the settings menu?
well if you didn't apply the swap fix, it wouldn't be a problem to format. When you swap the sd cards and format, it is the problem.
crime_of_heart said:
well if you didn't apply the swap fix, it wouldn't be a problem to format. When you swap the sd cards and format, it is the problem.
Click to expand...
Click to collapse
so you did exactly the same thing as me right? i mean you applied the swap fix then formatted the internal sd?
replacing the motherboard to fix this seems to be a bit nonsense to me to be honest. what does the partition table have anything to do with the motherboard?
if only there would be a .kdz format custom rom which factory resets the internal sd card during the flash process and maybe fixes the bootloader somehow, that might be the solution.
yes i did the same and the only solution was to replace the motherboard. we need a sowftware that can reach to the emmc in low-level. like omap flasher. but we also need the correct drivers which doesn't exist yet.
crime_of_heart said:
yes i did the same and the only solution was to replace the motherboard. we need a software that can reach to the emmc in low-level. like omap flasher. but we also need the correct drivers which doesn't exist yet.
Click to expand...
Click to collapse
i don't know what the emmc is, i need to do research on that. but i still think that replacing the motherboard won't solve this issue because it seems non relevant to me. i messed up with the vold.fstab file. but after that it worked fine. i mean the internal and external cards swapped just fine. only after i decided to make a nandroid backup using rom toolbox all hell broke loose. i plan to wait a couple of days before turning the phone to LG service. i believe someone will come up with an idea.
yardım etmeye çalıştığın için teşekkür ederim bu arada
Well, there´s a new recovery for the O3D, v5.0.2.7 (I got it with ROM Manager).
It fixes 2 bugs of the previous (5.0.2.0) version: now the USB mass storage option in the mounts menu works (mount external SDCARD), and we can use ADB while in recovery. That way we can fix stuff in the phone filesystem while in recovery: we can now use ADB shell, or ADB push to replace files.
The problem is that I don´t know how to flash it to the phone while in the stock recovery. If someone can guide me on creating a signed ZIP containing this new recovery, flashable in the stock recovery, I would be glad to do that and post it here. I think these phones of you guys can be fixed using this method!
Marcovecchio said:
Well, there´s a new recovery for the O3D, v5.0.2.7 (I got it with ROM Manager).
It fixes 2 bugs of the previous (5.0.2.0) version: now the USB mass storage option in the mounts menu works (mount external SDCARD), and we can use ADB while in recovery. That way we can fix stuff in the phone filesystem while in recovery: we can now use ADB shell, or ADB push to replace files.
The problem is that I don´t know how to flash it to the phone while in the stock recovery. If someone can guide me on creating a signed ZIP containing this new recovery, flashable in the stock recovery, I would be glad to do that and post it here. I think these phones of you guys can be fixed using this method!
Click to expand...
Click to collapse
Great news! But now i need to find a way to install the new CWM. Just as you said i believe what i need is to find or make a .kdz update which includes this new CWM.
What do you think?
I know this is possible, at least for the Galaxy Ace: I have a ZIP file for this device with a custom recovery image, flashable in stock recovery!
To make one for the Optimus 3D, I need to know the following:
- How can I obtain the .IMG of the new recovery? I have found some temp files in clockworkmod folder in my sdcard. The creation date of one of them matches the exact moment I upgraded my recovery, and the file size also matches a recovery image: 5.54MB. Is it the recovery image? Can I just rename it to recovery.img? How can I extract it to ensure it´s ok?
- After I get the recovery image, I can use the Galaxy Ace ZIP as the base to build the O3D zip file. Any help on what do I have to change to make it work correctly?
I also tried this:
http://forum.xda-developers.com/showthread.php?t=1244490
I starts just fine but get's stuck on the "RESET" command, after a while it gives "DOWNLOAD FAIL!" error. I think the phone is supposed to restart automatically but it doesn't. Manually resetting the phone doesn't work either.
I'm about to pull my hair out...
Edit: I'm 99% sure that this isn't a hardware related problem. And LG's software not being able to turn the phone to stock is totally [email protected]#$%!
On some "unbrick your optimus 3d" threads i came across this image:
http://attachments.xda-developers.com/attachment.php?attachmentid=667470&d=1311752328
i tried all methods around here but not once i came across a screen like it. weird...
well i give up guys. so much technical [email protected] going on and no one seems to understand this device enough. i'll turn it to the LG Repair Service today. Thank you everyone for your help...
So ive been at this for 2 days. I finally got the micro sd card with both files to install rom but in clockworkmod recovery i cant mount sd card nor format or anything. I can mount and unmount in the normal settings of the device and see it in root explorer but thats it. Its formatted to fat32. also on rom manager where it says to install from sdcard it only takes u to the internal sdcard which makes no sense because i was told u cant install a rom from the internal sdcard.
PS. This is my first Android Device!!!!
yeah
I am in the exact same situation. I am rooted on 4.0.3 and I wanted to install 4.0.4 or one of the custom ROM's. This is not my first android device but I am at a loss. I can not enter fastboot, can't load anything from the SD card in CWM recovery (get the message E:Can't mount /sdcard/), can not connect via ADB on my PC.
I feel that I have enough skill to do all of this because I have done it in the past. My ADB works fine with my Galaxy Nexus (just updated that and installed new kernel) so I don't know what is causing the problem. I have tried different SD cards(3) as well and nothing.
The biggest problem is I can not get into fastboot and SBF if I wanted to. I have been having issues with drivers even though I have installed motohelper like 6 million times.
I have tried factory resets and wipes and everything. I tried to do the factory update that is being pushed to me and I get an error. Any help would be greatly appreciated.
Sorry if this is stealing your thread but I think we are having the same problems.
check out my thread at xoomforums:
I PM'd it to u cus it dont let me put it here
Read all 3 pages. I think it will help u. posted same question there and a guy suggested to install the rogue cwm 1.5 recory via adb fastboot or whatever. he says that will read your sdcards. if i were u id try and fastboot on a different pc cus it looks like thats what we both have to do unfortunately. it looks like a pain!!! u have a xoom?
anyone figured out how to sort this?? really frustrating it just sayin E:can't mount sd card.. any help will be appreciated!!
platt said:
anyone figured out how to sort this?? really frustrating it just sayin E:can't mount sd card.. any help will be appreciated!!
Click to expand...
Click to collapse
If you are using CWM recovery from Rom Manager (not recommended for Xoom) it does only read your internal flash memory (called sdcard) but not your external microsd card (called external1???). So you need to flash a different custom recovery using adb/fastboot to flash a recovery.image file or, if you can flash through cwm (from internal sdcard) a recovery.zip file (either EOS or Rogue, depending on the ROM you will flash afterwards), Actually, any custom recovery is supposed to work for any rom, but in reality Eos works best for Eos and Rogue works best for the CM9 Kang.
Please, just remember, never flash a .zip file through fastboot, only an .image file!
+1 i agree with the above, fixed this last night. I download a couple recovery images, which were blank for some reason, so i downloaded the zips and extracted the recovery image folder. Then opened the command window from the folder with the recovery image and flashed it with fastboot. Now it works perfect.
Sent from my MB855 using xda premium
Fastboot
I had to use fastboot to flash an entire stock config when I got stuck in this loop.
TheAv8tor said:
I had to use fastboot to flash an entire stock config when I got stuck in this loop.
Click to expand...
Click to collapse
Atleast you got it out, mines been acting up since i flashed cm9. I think i might have to do that
Sent from my MB855 using xda premium
okantomi said:
If you are using CWM recovery from Rom Manager (not recommended for Xoom) it does only read your internal flash memory (called sdcard) but not your external microsd card (called external1???). So you need to flash a different custom recovery using adb/fastboot to flash a recovery.image file or, if you can flash through cwm (from internal sdcard) a recovery.zip file (either EOS or Rogue, depending on the ROM you will flash afterwards), Actually, any custom recovery is supposed to work for any rom, but in reality Eos works best for Eos and Rogue works best for the CM9 Kang.
Please, just remember, never flash a .zip file through fastboot, only an .image file!
Click to expand...
Click to collapse
Thanks for saving the last half of my hair which I hadn't pulled out yet.
Got the backup on SD ONLY after flashing the EOS recovery 1.5.0 (i tried the latest to begin with, did not work, made it worse flashing recovery from ROM Mgr)
http://www.xoomforums.com/forum/mot...ing-flashing-unrooting-under-one-roof-59.html has this particular recovery listed.
I still cannot boot in recovery using power+volUP...i have to get at least adb running. Any suggestion would be golden.
error mounting /internal_sdcard!
error mounting /internal_sdcard! pls help me it got stuck in boot loop tried to wipe cache and user data bt cwm says error mounting /internal_sdcard!
Ipse_Tase said:
Thanks for saving the last half of my hair which I hadn't pulled out yet.
Got the backup on SD ONLY after flashing the EOS recovery 1.5.0 (i tried the latest to begin with, did not work, made it worse flashing recovery from ROM Mgr)
http://www.xoomforums.com/forum/mot...ing-flashing-unrooting-under-one-roof-59.html has this particular recovery listed.
I still cannot boot in recovery using power+volUP...i have to get at least adb running. Any suggestion would be golden.
Click to expand...
Click to collapse
Delete any zip files or IMG files from sdcard and reboot it this helped me ............ Hit thanks if helped
Sent from my HTC Desire C using XDA Premium 4 mobile app
This is my first attempt at unlocking and rooting. So far I did manage to get unlocked. Now I am stuck at: Can't mount/sdcard . . . . .
I have been following the thread: [HOW] Rookie Rooting, Flashing And UnRooting Under One Roof
It seems to be layed out quite well and well, I'd never have gotten this far if it weren't for following those directions. I'm not discouraged because I know this is just a stumbling block. I can't wait to kill the bloatware and see if I can O/C this beast just a little.
Good luck to the folks who posted above me. I will post my results here.
Mike P.
I think the solution is much more simple...
The recovery uses normally e: an external sd card , you just trying by d: internal sd card , so take another sd card and dun let it be internal sd card...
And the recovery back on working with you
Somebody plzzzz help !!
I have a Samsung Y DUOS - S6102. I was playing around with ClockWorkMod, when I chose the option to Format System !! So now my phone doesn't have an OS !! WHAT CAN I DO TO RECOVER ? Plz advice....
sudarshang said:
Somebody plzzzz help !!
I have a Samsung Y DUOS - S6102. I was playing around with ClockWorkMod, when I chose the option to Format System !! So now my phone doesn't have an OS !! WHAT CAN I DO TO RECOVER ? Plz advice....
Click to expand...
Click to collapse
have you made any backup before formatting your system?
If you have made a Nandroid Backup, then its easy to recover the ROM. But if you haven't made, then Mount USB storage in CWM recovery, and connect your phone to computer via USB cable. Then transfer the ROM zip file to SD card. And then you are able to flash the ROM. Be sure to wipe data/cache/dalvik-cache/battery stats.
coolsandie said:
If you have made a Nandroid Backup, then its easy to recover the ROM. But if you haven't made, then Mount USB storage in CWM recovery, and connect your phone to computer via USB cable. Then transfer the ROM zip file to SD card. And then you are able to flash the ROM. Be sure to wipe data/cache/dalvik-cache/battery stats.
Click to expand...
Click to collapse
Thanks for that...
However could you point me to downloading said ROM zip file please...
sudarshang said:
Thanks for that...
However could you point me to downloading said ROM zip file please...
Click to expand...
Click to collapse
You were using a Custom ROM before aren't you? If yes, then probably you should know which ROM you used before.
Anyways you can search in the device-specific forum over here :
http://forum.xda-developers.com/forumdisplay.php?f=1469
azean07 said:
have you made any backup before formatting your system?
Click to expand...
Click to collapse
Sadly NO ....Stupid Me !!! However I'm quite new to all this...which,if any, is my only saving grace.
coolsandie said:
You were using a Custom ROM before aren't you? If yes, then probably you should know which ROM you used before.
Anyways you can search in the device-specific forum over here :
http://forum.xda-developers.com/forumdisplay.php?f=1469
Click to expand...
Click to collapse
Interestingly enough, I was working on the stock ROM that the phone was on.It's a new device I was using.And I just got introduced to the ClockWorkMod thingy, which was just a zip file that I chose thru the Reboot Recovery Screen. I was just mucking around with the options on the CWM, when I unwittingly chose to Format System (No goddamn idea why !!!! )
But I will search for a suitable ROM. Will revert back in case of any issues....THNX !!!
Hi I need some help to get my phone working again. This is a bit more difficult because the Nexus S doesn't have a removable SD card slot. The OS on my phone is gone, but I still have clockwork recover working. The problem is that I do not have any zip files on the internal SD card to flash a new ROM. Does anyone know how to get a ROM zip file copied over to the Nexus S for flashing? Phone isn't working now :crying:
Copy full ROM images via fastboot from Android SDK
btaing said:
Hi I need some help to get my phone working again. This is a bit more difficult because the Nexus S doesn't have a removable SD card slot. The OS on my phone is gone, but I still have clockwork recover working. The problem is that I do not have any zip files on the internal SD card to flash a new ROM. Does anyone know how to get a ROM zip file copied over to the Nexus S for flashing? Phone isn't working now :crying:
Click to expand...
Click to collapse
Hi,
I don´t know how you are experienced, bu first read this page below:
http://forum.xda-developers.com/showthread.php?t=1445635
BR
art_k
FIX
btaing said:
Hi I need some help to get my phone working again. This is a bit more difficult because the Nexus S doesn't have a removable SD card slot. The OS on my phone is gone, but I still have clockwork recover working. The problem is that I do not have any zip files on the internal SD card to flash a new ROM. Does anyone know how to get a ROM zip file copied over to the Nexus S for flashing? Phone isn't working now :crying:
Click to expand...
Click to collapse
If you have cwm 5.8.0.2 or 6.0.1 u can go to mount and storage, scroll down and click on mount usb storage. Plug it in to a pc and your sd card will pop up. then drag and drop a rom!
if not just go into fastboot plug it to your pc and flash via fastboot (google it how to do it, bcz i dont, sorry)
hit that thanks button if it helped
Thank you for correction and new information about cwm
Cascabreu said:
If you have cwm 5.8.0.2 or 6.0.1 u can go to mount and storage, scroll down and click on mount usb storage. Plug it in to a pc and your sd card will pop up. then drag and drop a rom!
if not just go into fastboot plug it to your pc and flash via fastboot (google it how to do it, bcz i dont, sorry)
hit that thanks button if it helped
Click to expand...
Click to collapse
It is a new information for me about possibility access USB via cwm.
Thank you Cascabreu
buenas noches
art_k
Cascabreu said:
If you have cwm 5.8.0.2 or 6.0.1 u can go to mount and storage, scroll down and click on mount usb storage. Plug it in to a pc and your sd card will pop up. then drag and drop a rom!
if not just go into fastboot plug it to your pc and flash via fastboot (google it how to do it, bcz i dont, sorry)
hit that thanks button if it helped
Click to expand...
Click to collapse
Worked!!
GREAT
btaing said:
Worked!!
Click to expand...
Click to collapse
im glad that i finally helped someone!
I need to boot android off a external SD card.is this possible if so can you pleae guide through it
I realize your post was from nearly a year ago but I currently have the need to be able to boot an old device from external SD as the internal is irreparably corrupted or for whatever reason is not usable or fixable. I have tried every method I know of to fix the internal storage with no success including flashing pit files and the correct samsung firmware. Fortunately I can boot into recovery and fastboot mode so I still have options(hopefully.)
In any case I have found 2 (very old) threads with potential solutions to this issue . I find it somewhat surprising there is not more development on this as a great many have found ourselves needing to do this. Even though booting from ext SD is not ideal it would at least keep someone operable that didn't have a fallback device until they can obtain a new device.
There is one thread where the OP managed to use adb shell and/or unix to format the external SD for an ASUS tablet(TF701t.) I am not sure if others successfully used his method on other devices. Regardless it is an enlightening thread and led me to the 2nd one below about a using custom TWRP that enables dual boot between internal and external SD. I am going to try method 2 in just a few minutes on an old Galaxy Note 4 (N910C) that died on me recently. I'm going to have to copy the nandroid backups that are on the extSD to a computer and then figure out how to get TWRP to use one of them to restore to the same media where they reside. Hopefully a closer reading of the 2 threads will reveal the answer.
1.) Format ext SD via ADB shell thread: https://forum.xda-developers.com/transformer-tf701/help/dead-mmc-ideas-t2830332
2.) Custom Dual boot TWRP thread: http://forum.xda-developers.com/showthread.php?t=2684052
If anyone happens on this thread and has more information regarding booting from ext SD please share what you know.
On Rockship SOC
I do it with a GPD XD RK3288 and GPD G5 RK3188 since over two years.
Works perfectly fine.
Sd Card is San Disk 64gb
https://forum.freaktab.com/forum/tv...d-on-a-rk3288-device-an-easy-way-to-dual-boot
Bub3d said:
On Rockship SOC
I do it with a GPD XD RK3288 and GPD G5 RK3188 since over two years.
Works perfectly fine.
Sd Card is San Disk 64gb
https://forum.freaktab.com/forum/tv...d-on-a-rk3288-device-an-easy-way-to-dual-boot
Click to expand...
Click to collapse
Hi Bub3d,
I checked the link thank you very much. Do you maybe have a better guide to perform a dual boot on the GPD xD.
Thank you in Advance.
BR
ED
Hello , your answer
https://github.com/phhusson/boot-diverter
Un développeur installe plusieurs versions d’Android sur son smartphone et prouve que le dual boot fonctionne
Android n'a jamais été très ouvert au dual boot et pourtant, un développeur français est parvenu à installer plusieurs ROM sur son Galaxy A71.
www.google.com
Good reading
No, you cant.
metafizik said:
I realize your post was from nearly a year ago but I currently have the need to be able to boot an old device from external SD as the internal is irreparably corrupted or for whatever reason is not usable or fixable. I have tried every method I know of to fix the internal storage with no success including flashing pit files and the correct samsung firmware. Fortunately I can boot into recovery and fastboot mode so I still have options(hopefully.)
In any case I have found 2 (very old) threads with potential solutions to this issue . I find it somewhat surprising there is not more development on this as a great many have found ourselves needing to do this. Even though booting from ext SD is not ideal it would at least keep someone operable that didn't have a fallback device until they can obtain a new device.
There is one thread where the OP managed to use adb shell and/or unix to format the external SD for an ASUS tablet(TF701t.) I am not sure if others successfully used his method on other devices. Regardless it is an enlightening thread and led me to the 2nd one below about a using custom TWRP that enables dual boot between internal and external SD. I am going to try method 2 in just a few minutes on an old Galaxy Note 4 (N910C) that died on me recently. I'm going to have to copy the nandroid backups that are on the extSD to a computer and then figure out how to get TWRP to use one of them to restore to the same media where they reside. Hopefully a closer reading of the 2 threads will reveal the answer.
1.) Format ext SD via ADB shell thread: https://forum.xda-developers.com/transformer-tf701/help/dead-mmc-ideas-t2830332
2.) Custom Dual boot TWRP thread: http://forum.xda-developers.com/showthread.php?t=2684052
If anyone happens on this thread and has more information regarding booting from ext SD please share what you know.
Click to expand...
Click to collapse
Well,I Will Try It Later,Beside My spare phone has broke (Redmi 2,It Can Be booted to fastboot,and recovery (unfortunately it need a adb to help it boot to twrp) the Chip Inside may be corrupted due to unsuccesful encryption)
Edit : I Will Update It By Editing this reply