Nexus 5 cache and system flashing problem - Nexus 5 Q&A, Help & Troubleshooting

Hello people of XDA developers,
One fine day, my nexus 5 started hanging up while booting. After the google Logo, the Marshmallow animation would show up and then it would hang and power off. I have no problem in doing a factory reset/wipe of my phone. But the only thing i want to save is my contacts. I have tried erasing and re-flashing system, cache, boot and boot-loader. Using ADB, flashing the cache always fails........ However, i have not touched userdata as i think it would affect the contacts too. I have even tried using different custom recoveries such as CWM, TWRP and even Philz Touch to use adb to pull my SD card files to my PC. Even flashing the system is not working now.... (atleast that's what my results were) .
Philz touch error messages....
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
Driven to the point of desperation now........ Thanx a lot in advance... BTW, i'm a complete noob, so plz bear with me and my questions

A223D said:
Hello people of XDA developers,
One fine day, my nexus 5 started hanging up while booting. After the google Logo, the Marshmallow animation would show up and then it would hang and power off. I have no problem in doing a factory reset/wipe of my phone. But the only thing i want to save is my contacts. I have tried erasing and re-flashing system, cache, boot and boot-loader. Using ADB, flashing the cache always fails........ However, i have not touched userdata as i think it would affect the contacts too. I have even tried using different custom recoveries such as CWM, TWRP and even Philz Touch to use adb to pull my SD card files to my PC. Even flashing the system is not working now.... (atleast that's what my results were) .
Philz touch error messages....
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
E: Can't mount /cache/recovery/last_install
E: Can't open /cache/recovery/last_install
Driven to the point of desperation now........ Thanx a lot in advance... BTW, i'm a complete noob, so plz bear with me and my questions
Click to expand...
Click to collapse
Greetings,
Thank you for using XDA Assist. To get you the best possible help for your issue, I'm going to move this thread to your device's Q&A forum. Good luck!

Did you check your Google or gmail account to see if the contacts have been synced?

Related

Can't mount /cache/recovery/

Hi there,
I used Cyanogenmod 1.1 beta for a while and while I was pretty happy about it, it did have some issues i wasn't very fond of. So I decided to to perform a nandroid restore of my stock rom and succeeded. My stock rom kept crashing when trying to use internet (synchronising, browsing etc). While messing a little with the settings (like no account syncing etc) my phone crashed and it went into an infinite bootloop. I went into recovery, did the neccesary wipes and performed a nandroid recovery to my Cyanogenmod again. It errored while doing so (can't remember exactly what the line was, but was something like unable to format...something).
Now when I boot into recovery it displays the following information:
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
Any idea's? I know there is a lot to find about this on the internet and this forum but they're all guides from other devices and don't know if it would be wise to follow them
Help would be appreciated!
Clockworkmod v4.0.1.4
Eisken said:
Hi there,
I used Cyanogenmod 1.1 beta for a while and while I was pretty happy about it, it did have some issues i wasn't very fond of. So I decided to to perform a nandroid restore of my stock rom and succeeded. My stock rom kept crashing when trying to use internet (synchronising, browsing etc). While messing a little with the settings (like no account syncing etc) my phone crashed and it went into an infinite bootloop. I went into recovery, did the neccesary wipes and performed a nandroid recovery to my Cyanogenmod again. It errored while doing so (can't remember exactly what the line was, but was something like unable to format...something).
Now when I boot into recovery it displays the following information:
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
Any idea's? I know there is a lot to find about this on the internet and this forum but they're all guides from other devices and don't know if it would be wise to follow them
Help would be appreciated!
Clockworkmod v4.0.1.4
Click to expand...
Click to collapse
What happens when you attempt to enter RECOVERY and format CACHE?
Did you at any point in this boot loop process pull the battery?
ben_pyett said:
What happens when you attempt to enter RECOVERY and format CACHE?
Did you at any point in this boot loop process pull the battery?
Click to expand...
Click to collapse
When doing cache wipe:
Formatting /cache...
Cache wipe complete.
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
I did not pull the battery out except for the infinite bootloop I mentioned earlier.
Eisken said:
When doing cache wipe:
Formatting /cache...
Cache wipe complete.
E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/
E:Can't mount /cache/recovery/last_log
E:Can't open /cache/recovery/last_log
I did not pull the battery out except for the infinite bootloop I mentioned earlier.
Click to expand...
Click to collapse
Sorry, I'm afraid that I must be the bearer of bad news ....I believe that by pulling out the battery you have ruined the eMMC chip in the device, this appears to be a flaw or defect with a selection of recent HTC devices.
I believe that the only thing you can do is to return the device for warranty or to attempt to get the chip replaced.
Here are a selection of similar threads, within this forum which also cover this problem and I believe that you should be able to find others......
http://forum.xda-developers.com/showthread.php?t=1165304
http://forum.xda-developers.com/showthread.php?t=1150917
http://forum.xda-developers.com/showthread.php?t=1226849
Thanks for your reply!
Too bad there is nothing to do about it. I'll just send it in for repair then.
having the same problem.. so should i try to wipe the cache and see what happens?
I fixed that by going into recovery and wiping the cache. It still says that it is unable to mount but re-flashing the ROM fixed all that.
I've tried that quite a few times, but it always failed to flash the rom. Did you get errors when flashing the rom?
What errors do you get when you're installing the ROM?
If you are still able to go into recovery then....
Do you have EXT4 recovery installed?
If not 1) Download this FILE which is EXT4 recovery 2) then copy it onto your SD card 3) enter recovery and flash the EXT4 ZIP file 4) Reboot Recovery
Then look at what format the existing CACHE partition is in?
OK i seem to be the next one with this Problem.
But for now it isn't a real problem, the following happended:
Used Hydrogen for some weeks, but wanted to try the new Virtuous Unity. So i did a backup of my apps with titanium, booted into recovery, flashed the Virtuous Rom, Install was complete and after that it says the known E: cant't mount ... and so on.
After that i pressed restart now in ext4 recovery and the Rom booted as it should. I restored my apps, everything is ok. But now i'm a little scared what will happen next
So is this the normal "way" it goes, or did i just have luck? I'm thinking about going back to s-on and stock, if this is possible.
Btw i didn't pull out the battery ever, cause i knew this could brick my ds, and i never had a bootloop or something like that.
Hope someone can give me some tips.
Cheers
EbiEre said:
OK i seem to be the next one with this Problem.
But for now it isn't a real problem, the following happended:
Used Hydrogen for some weeks, but wanted to try the new Virtuous Unity. So i did a backup of my apps with titanium, booted into recovery, flashed the Virtuous Rom, Install was complete and after that it says the known E: cant't mount ... and so on.
After that i pressed restart now in ext4 recovery and the Rom booted as it should. I restored my apps, everything is ok. But now i'm a little scared what will happen next
So is this the normal "way" it goes, or did i just have luck? I'm thinking about going back to s-on and stock, if this is possible.
Btw i didn't pull out the battery ever, cause i knew this could brick my ds, and i never had a bootloop or something like that.
Hope someone can give me some tips.
Cheers
Click to expand...
Click to collapse
The good news here is that you recovered from this problem and also that you didn't pull battery, so we can rule that out as being the cause in your case.
Between the Installation/flashing of the second ROM did you perform the necessary WIPES?
You may well have done, but, just in case, I'd always recommend that you take a full Nandroid backup of an existing system ROM before moving and flashing another (just to have a fall back position in case)?
@ EbiEre
I got scared after reading those lines too. Nothing to worry about. Just keep flashing roms as usual . Just a cache error. If you didnt pull out the battery, and if the rom booted, then everything is ok.
Yeah but I'm scared because I think it could brick "really".
I don't think it is sure that it only happen if i pull out the battery isn't it?
For now I'm back at the stock tom, it's OK but to be honest I love to root my phone and flash rims, and so maybe I will root again
Thx for your answers
EbiEre said:
Yeah but I'm scared because I think it could brick "really".
I don't think it is sure that it only happen if i pull out the battery isn't it?
For now I'm back at the stock tom, it's OK but to be honest I love to root my phone and flash rims, and so maybe I will root again
Thx for your answers
Click to expand...
Click to collapse
Can only echo the comments of @.sh4d0w.
We all take a minor risk of bricking our devices with the majority of commands and flashes that we do.....but we still do them because that's half the fun...
Did you ever examine the format types ie EXT3/EXT4 of each partition using the EXT4 recovery?

huawei u8815 g300 bricked?

Hi guys,
Had a thread open on modaco for this issue but had no joy. I'm having exactly the same issues as the thread starter in the link below, you guys have helped me before and wondered if you had any suggestions on a way forward?
http://www.modaco.com/topic/358071-phone-near-bricked-help-needed/
Basically I've had ics updated on the phone with the boot loader unlocked and of course the phone rooted. The update went through fine and I've been using the phone for a couple of days until it crashed and stuck on the splash screen since then it will only go into recovery mode with the following errors:
E: Can't mount /cache/recovery/command
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
Have tried wiping cache, formatting cache and numerous other things as per the thread on modaco but no joy. I've literally had the phone a few days and think it's unlikely to be a hardware fault unless it's exactly the same as the OP had.
Willing to try anything!
Thanks

[Q] E:Cant mount cache

I am Using PhilZ CWM 6.49.2. I cant even Flash A Custom ROM Because of this problem it would just show me these error messages
E: Can't mount /cache/recovery/command
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
and say "Installation Aborted" and restart phone.
When i wipe data/factory reset, format cache it would just show me these errors.
I have also tried Flashing back to the Stock ROM via odin and repeated all of the procedures: 1.Framaroot(To ROOT) 2:CWM(Flash via odin)
Still no success it just keeps giving me these stupid errors when i try flashing a custom ROM,SO BASICALLY I CANT FLASH A CUSTOM ROM
Please Find a FIX.
THANKS.:good:
dima234 said:
I am Using PhilZ CWM 6.49.2. I cant even Flash A Custom ROM Because of this problem it would just show me these error messages
E: Can't mount /cache/recovery/command
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: Can't mount /cache/recovery/last_log
E: Can't open /cache/recovery/last_log
and say "Installation Aborted" and restart phone.
When i wipe data/factory reset, format cache it would just show me these errors.
I have also tried Flashing back to the Stock ROM via odin and repeated all of the procedures: 1.Framaroot(To ROOT) 2:CWM(Flash via odin)
Still no success it just keeps giving me these stupid errors when i try flashing a custom ROM,SO BASICALLY I CANT FLASH A CUSTOM ROM
Please Find a FIX.
THANKS.:good:
Click to expand...
Click to collapse
just exactly the same problem here brother...
solution
all you need to do apparently is to go to samMobile,find your device,your country,download the rom,extract it,and flash it with odin.i think it need it to be the same rom as the one installed but not sure about it.it worked perfectly for me,it fixed my recovery back to its stock one without the errors.message me if you still have a problem.
Use TWRP Recovery,And as previously someone said,Try to download Stock Rom file again from Sammobile,After that may h it'll work!

MOTO G XT-1045- Cannot Restore With CWM

[Q] cwm not restoring? MOTO G XT-1045
So I'm kinda new to this so forgive me if I cannot provide adequate information.
Background/Necessary info
Just recently, my phone died and wouldn't turn back on. I fixed this by keeping my phone on the charger forever and holding the power button forever. When the phone finally powered back on, every app began to crash, including process com.google.process.gapps. It was so bad to the point where I couldn't use the phone normally. I tried to fix it by booting into recovery and restoring the phone to the factory version. This brings me to:
The problem
I wiped data/factory reset, wiped the cache and cleared the dalvik cache. For the first time I saw this:
E: can't open /cache/recovery/log
E: can't open /cache/recovery/log
E: can't open /cache/recovery/last_log
E: can't open /cache/recovery/last_log
E: can't open /cache/recovery/last_install
E: can't open /cache/recovery/last_install
I thought those messages didn't mean anything significant, so I went ahead and tried to restore, and I got the error:
Error while restoring /system!
A lot of research on google led me to some:
Attempted fixes
I tried unmounting and mounting system/data/cache/external sd, formatting the cache/system, to reinstall my existing mod from my sd card (that gave me error 7), and I tried wiping the cache partition. Nothing worked.
How do I get rid of those error messages? What am I doing wrongly? It might be staring me right in the face but I cannot see it lol
Also ill post more info if needed. Thanks in advance!

[Completed] Myphone Uno E:failed to mount /cache (Invalid argument)

Please help me. I am trying my best but I cant do this anymore.
In the past my phone was always updating. I don;t know how it happened. But it started when I updated my android. I just saw that my device was taking too long to boot. I was on the four concentric circles logo of android 6. I used it for quiet a time. Then it ended up to bootloop. That time I don't know that I need to wipe data/factory reset and wipe cache/ wipe cache partition. I search this on youtube after experiencing the error bellow.
E: Can't open /cache/recovery/last_install
E: Can't mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache/recovery/last_log
-and then all of the lines just jumbled again
same as the one on this thread:
http://forum.xda-developers.com/google-nexus-5/help/help-nexus-5-bricked-clearing-cache-t2564509
I tried to follow the advice by typing the code "fastboot flash cache cache.img"
unfortunantely I was not able to find any cache.img that is suitable for my Android. I am running on 6.0.1 MMB29Q.
I was looking for any sprout 4 stock rom here for my uno but i can't find anything. I even tried to fastboot flash another rom but it failed. I also tried to flash using an sd card but its not working.
when I am trying to adb sideload on the other hand, it would only take about a minute or two then it would go back to bootloader mode.
PLEASE HELP ME REGARDING THIS MATTER. PLEASE POST LINKS where i can find cache.img for android 6.0.1 MMB29Q. for MYPHONE UNO If ever there were other solutions please post. I really need your help guys.
tjtenedero said:
Please help me. I am trying my best but I cant do this anymore.
In the past my phone was always updating. I don;t know how it happened. But it started when I updated my android. I just saw that my device was taking too long to boot. I was on the four concentric circles logo of android 6. I used it for quiet a time. Then it ended up to bootloop. That time I don't know that I need to wipe data/factory reset and wipe cache/ wipe cache partition. I search this on youtube after experiencing the error bellow.
E: Can't open /cache/recovery/last_install
E: Can't mount /cache (Invalid argument)
E: Can't mount /cache/recovery/log
E: Can't open /cache/recovery/log
E: failed to mount /cache/recovery/last_log
-and then all of the lines just jumbled again
same as the one on this thread:
http://forum.xda-developers.com/google-nexus-5/help/help-nexus-5-bricked-clearing-cache-t2564509
I tried to follow the advice by typing the code "fastboot flash cache cache.img"
unfortunantely I was not able to find any cache.img that is suitable for my Android. I am running on 6.0.1 MMB29Q.
I was looking for any sprout 4 stock rom here for my uno but i can't find anything. I even tried to fastboot flash another rom but it failed. I also tried to flash using an sd card but its not working.
when I am trying to adb sideload on the other hand, it would only take about a minute or two then it would go back to bootloader mode.
PLEASE HELP ME REGARDING THIS MATTER. PLEASE POST LINKS where i can find cache.img for android 6.0.1 MMB29Q. for MYPHONE UNO If ever there were other solutions please post. I really need your help guys.
Click to expand...
Click to collapse
Hi,
There's no dedicated forum for your device here. This thread seems to be the most relevant for your issue:
> Bricked my myphone uno using Android One Toolkit
Try posting your query there. Hopefully other UNO users can help you.
Good luck

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