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[Q] Mounting issues...

Ok, I've spent about 8 hours on this and read a million forum topics, flashed everything upside down, five ways to sunday and now and I'm giving up:
I have adb, fastboot usb, unlock code, TWRP, HTC sync all working (as far as I can tell)
I successfully loaded AOKP latest build onto an external SD card, installed it with TWRP and it will get to the loading animation, where it loads permanently and will not complete.
My assumption is that it is trying to mount the sdcard and data folders and cannot, I believe this because in TWRP, I get error messages saying "E:/ unable to mount /data" and the same for /sdcard.
I successfully updated TWRP with a recovery image to 2.3.3.0, which did not seem to help, but it is functioning and I can get to it reliably.
at teamw.in/project/twrp2/66
I tried chmod 755 for the data and sdcard folders, but they don't mount so it appears that is not taking hold.
I have wiped and erased pretty much everything (probably too much, in frustration).
So now I can have a bootloader, TWRP, or a spinning unicorn logo, but my phone won't do anything else.
I'm stuck. Can anyone figure out why I am hanging at the loader or what I'm doing wrong?
I appreciate the help in advance

arjent said:
Ok, I've spent about 8 hours on this and read a million forum topics, flashed everything upside down, five ways to sunday and now and I'm giving up:
I have adb, fastboot usb, unlock code, TWRP, HTC sync all working (as far as I can tell)
I successfully loaded AOKP latest build onto an external SD card, installed it with TWRP and it will get to the loading animation, where it loads permanently and will not complete.
My assumption is that it is trying to mount the sdcard and data folders and cannot, I believe this because in TWRP, I get error messages saying "E:/ unable to mount /data" and the same for /sdcard.
I successfully updated TWRP with a recovery image to 2.3.3.0, which did not seem to help, but it is functioning and I can get to it reliably.
at teamw.in/project/twrp2/66
I tried chmod 755 for the data and sdcard folders, but they don't mount so it appears that is not taking hold.
I have wiped and erased pretty much everything (probably too much, in frustration).
So now I can have a bootloader, TWRP, or a spinning unicorn logo, but my phone won't do anything else.
I'm stuck. Can anyone figure out why I am hanging at the loader or what I'm doing wrong?
I appreciate the help in advance
Click to expand...
Click to collapse
Hi,
Are you s-on/off?
What hboot?

Bootloader says:
PYRAMID PVT SHIP S-OFF RL
HBOOT-1.27.1100
RADIO-11.22.3504.07_M
OpenADSP-v02.6.0.2226.00.0131
eMMC-boot

arjent said:
Bootloader says:
PYRAMID PVT SHIP S-OFF RL
HBOOT-1.27.1100
RADIO-11.22.3504.07_M
OpenADSP-v02.6.0.2226.00.0131
eMMC-boot
Click to expand...
Click to collapse
Hi,
What does it say at the top of the page?
According to the rest of it,there should be no reason for the ROM failure.
I am not very familiar with TWRP.
Would you be willing to install 4EXT recovery ,and trying again?
Look HERE
Step 1. Flashing 4EXT recovery touch

malybru said:
Hi,
What does it say at the top of the page?
According to the rest of it,there should be no reason for the ROM failure.
I am not very familiar with TWRP.
Would you be willing to install 4EXT recovery ,and trying again?
Look HERE
Step 1. Flashing 4EXT recovery touch
Click to expand...
Click to collapse
It says "revolutionary" at the top of the bootloader
ok, I did the 4EXT thing, copied, wrote over the image, flash rebooted and the phone cycled, and up pops my spinning unicorn gears as before. Still spinning....and spinning....I waited 5 minutes.
Is there some way to check into the mount permissions or something? Could I have messed that up and that is why it won't finish loading? This whole unable to mount /data thing?
More ideas?

arjent said:
It says "revolutionary" at the top of the bootloader
ok, I did the 4EXT thing, copied, wrote over the image, flash rebooted and the phone cycled, and up pops my spinning unicorn gears as before. Still spinning....and spinning....I waited 5 minutes.
Is there some way to check into the mount permissions or something? Could I have messed that up and that is why it won't finish loading? This whole unable to mount /data thing?
More ideas?
Click to expand...
Click to collapse
Hi,
Sorry,it is not clear.
Did 4EXT install?
Or does the spinning occur when you try to load a ROM?
Next thing I would suggest is to back up your sd card,format it to FAT32,and replace all your stuff.
Do not worry about the Android files.They will be installed when you load the card.
Format all partitions (except sd card)
Download a ROM,place it on the root of your sd card,check the md5 checksum,then,run it.

Yes 4EXT installed.
It said "error could not mount sdcard" but booted anyway
In 4EXT it still won't mount /data or /sdcard I do see that the SDcard is formatted as FAT 32
I'm a little confused, you said to format sdcard to fat32, but your next line says to format all partitions except sdcard?

When youi say you did the whole 4EXT thing, do you mean you installed AOKP using 4EXT Recovery?
If you can boo tinto 4EXT right now you will find a mounts menu that will allow you to mount and unmount just about everything.
You MAY see that the internal storage and SD card are already mounted. Unmount them and remount them. If that doesn't work unmount them, reboot into recovery, then remount them. 4EXT is pretty powerful and handles mounting pretty well.
I don't believe you deleted too much off the phone. I simply don't believe it. It's posisble to do that, but you wouldn't have access to the recovery module. If you can boot to 4EXT I am certain this is fixable.
---------- Post added at 05:08 PM ---------- Previous post was at 05:07 PM ----------
arjent said:
I'm a little confused, you said to format sdcard to fat32, but your next line says to format all partitions except sdcard?
Click to expand...
Click to collapse
Because you want to format everything and there is no option to format everything. You have to do everything internally and then do the SD card separately. It's to prevent you from accidentally screwing yourself up.
But actually before you format the internal memory, take the SD card out and try to boot. See what happens. It's possible that your SD card has an error that is causing the boot loop. Take it out and see if you boot all the way to the android home screen. If so, your ROM is installed. Just format the SD card after that and it should work.

Ok, booting into 4EXT and going to the mounts menu, when I hit "mount /sdcard" or "mount /data" it gives me an "error mounting..." message. I can mount and unmount system and cache though. I think that's the issue...any way to make those mountable again?
I will format everything and see if that helps...
Nope, it won't allow me to format my sdcard, since it is not mountable. Other partitions formatted with the exception of /sdcard/.android-secure since sdcard will not mount. I don't have an external sdcard in at the moment...should I put one in to do all this? I assumed /sdcard is the internal memory, no?
Toggle usb storage also gives me an error message " E: unable to write to ums lunfile (no such file or directory) Unable to connect to your (internal?) sdcard. If that helps understand the situation at all
Thanks for the glimmer of hope with "I am certain this is fixable"

arjent said:
I'm a little confused, you said to format sdcard to fat32, but your next line says to format all partitions except sdcard?
Click to expand...
Click to collapse
Hi,
Yes.
These are 2 separate instructions.
Format all partitions (except sd card) is something you will find in 4EXT.
It should be used to clean your phone before a fresh install.
Format to FAT 32 is something I suggested you do to your sd card,in case it has some error or other,which may be preventing you from flashing a ROM.
In any case,try the mount/unmount thing that Skipjacks suggested first

malybru said:
Hi,
Yes.
These are 2 separate instructions.
Format all partitions (except sd card) is something you will find in 4EXT.
It should be used to clean your phone before a fresh install.
Format to FAT 32 is something I suggested you do to your sd card,in case it has some error or other,which may be preventing you from flashing a ROM.
In any case,try the mount/unmount thing that Skipjacks suggested first
Click to expand...
Click to collapse
Ok, as before, I could not format sdcard due to being unmountable. /data is now mountable though, that's progress!
It seems the internal sdcard being unmountable is the crux of the problem. Cannot format or repartition or mount internal sdcard.

arjent said:
Ok, as before, I could not format sdcard due to being unmountable. /data is now mountable though, that's progress!
It seems the internal sdcard being unmountable is the crux of the problem. Cannot format or repartition or mount internal sdcard.
Click to expand...
Click to collapse
Hi,
2 choices:
1.Use a card reader
2.Use another card
I would suggest number 1
It can then be formatted in your PC (better than on the phone)
And it is an extremely useful tool.(quicker data transfer)

malybru said:
Hi,
2 choices:
1.Use a card reader
2.Use another card
I would suggest number 1
It can then be formatted in your PC (better than on the phone)
And it is an extremely useful tool.(quicker data transfer)
Click to expand...
Click to collapse
But that is my internal sdcard it is referencing that cannot be mounted. I can't take it out to format it in a card reader. I do have an external micro sdcard that is already formatted. Is there a way to use ONLY the external card, as it seems my internal card is messed up?

arjent said:
But that is my internal sdcard it is referencing that cannot be mounted. I can't take it out to format it in a card reader. I do have an external micro sdcard that is already formatted. Is there a way to use ONLY the external card, as it seems my internal card is messed up?
Click to expand...
Click to collapse
Hi,
OK.
I got the wrong end of the stick.
Why are you using internal?
To load a ROM,place it on the root of your external sd card.
When you choose/select ROM to flash in recovery,that is where the phone looks.
Not in the internal.
---------- Post added at 12:58 AM ---------- Previous post was at 12:55 AM ----------
Hi,
I have to go now.
If your internal memory is screwed,then, a RUU may may your only savior.
Look HERE

malybru said:
Hi,
OK.
I got the wrong end of the stick.
Why are you using internal?
To load a ROM,place it on the root of your external sd card.
When you choose/select ROM to flash in recovery,that is where the phone looks.
Not in the internal.
---------- Post added at 12:58 AM ---------- Previous post was at 12:55 AM ----------
Hi,
I have to go now.
If your internal memory is screwed,then, a RUU may may your only savior.
Look HERE
Click to expand...
Click to collapse
Ok, well I did not want to do the RUU if I could avoid it.
I think somehow, magically, you guys have helped me fix it. I took your suggestion of not trying to load a ROM onto the internal memory and just leaving it on external micro SD and leaving the external in while I run. (too scared to take it out after 24 hours of tinkering) But it is running now! Thank goodness.
Some combo of wiping and formatting with 4EXT in addition to my change in installation method (although I tried this same method yesterday to no avail) has solved the problem.
Thanks to the both of you! Real heartfelt thanks as well as forum button thanking.

[Q] What does Mounting System, Data and Cache mean?

I am a newbie into this rooting and upgrading stuffs on my android phone. Iv rooted, installed custom ROMs etc etc and tinkered with my phone a lot of times. I am also a curious learner. could anyone please tell me what exactly mounting storage, mounting data or mounting cache mean. Iv mounted and unmounted them alot of times going by the guidelines provided for the specific installations. Would be nice if i actually know why i am doing it Also Kindly let me on what actions can be performed or not performed when.they are mounted/ unmounted thank you.
#wannabeDeveloper

if you want to install a custom rom, sometimes a procedure for mounting tell you, it's like you open a permission to install that rom to your device
Sorry for my bad english

Achesh97 said:
I am a newbie into this rooting and upgrading stuffs on my android phone. Iv rooted, installed custom ROMs etc etc and tinkered with my phone a lot of times. I am also a curious learner. could anyone please tell me what exactly mounting storage, mounting data or mounting cache mean. Iv mounted and unmounted them alot of times going by the guidelines provided for the specific installations. Would be nice if i actually know why i am doing it Also Kindly let me on what actions can be performed or not performed when.they are mounted/ unmounted thank you.
#wannabeDeveloper
Click to expand...
Click to collapse
Mounting is the point where you can edit the files in the folder that you mount, it similar to that of mounting drives.
Similarly there are mounting such as when you use root explorers you can mount them as read/write or read only.
A Linux user can explain you in the best way, coz they usually mount their partitions as drives to work on them.
Hit thanks rather than typing it now Free

zipperX said:
if you want to install a custom rom, sometimes a procedure for mounting tell you, it's like you open a permission to install that rom to your device
Sorry for my bad english
Click to expand...
Click to collapse
your English is fine
so everytime you have to perform an update or flashing anything, you have to make sure that all the three are mounted? rigjt?

parkourkarthik said:
Mounting is the point where you can edit the files in the folder that you mount, it similar to that of mounting drives.
Similarly there are mounting such as when you use root explorers you can mount them as read/write or read only.
A Linux user can explain you in the best way, coz they usually mount their partitions as drives to work on them.
Hit thanks rather than typing it
Click to expand...
Click to collapse
Thank You there so whenever i have to flash a zip file or particularly an update, i have to mount everything? and what should be their states before rebooting? like mounted or unmounted?

Achesh97 said:
Thank You there so whenever i have to flash a zip file or particularly an update, i have to mount everything? and what should be their states before rebooting? like mounted or unmounted?
Click to expand...
Click to collapse
No need of mounting everytime you flash.
Mostly the zip files itself contains scripts to mount your partition, they do the job theirself.
In rare cases the developer of the flashable zip file would recommend you to mount the partitions required, in those cases only you need to mount through CWM
Hit thanks rather than typing it now Free

[Q] Nexus S can't see sdcard

Hi All,
I've just updated my Nexus S i9023 to the latest stable Cyanogen Mod (10.1.3) and am now having problems seeing the internal sdcard. I've tried flashing 10.2 RC1 as well as mounting it via recovery mode but everything I do fails to get it to mount.
Would any body have suggestions on how to troubleshoot this (best place to look for logs to find errors) or have come across this before and know how to resolve it?

sdfw said:
Hi All,
I've just updated my Nexus S i9023 to the latest stable Cyanogen Mod (10.1.3) and am now having problems seeing the internal sdcard. I've tried flashing 10.2 RC1 as well as mounting it via recovery mode but everything I do fails to get it to mount.
Would any body have suggestions on how to troubleshoot this (best place to look for logs to find errors) or have come across this before and know how to resolve it?
Click to expand...
Click to collapse
when you turn off your nexus,then turn on holding volume up and power,can you enter into mode where you can access your sd card?
Can you see your files from sd then?

mirkozg15 said:
when you turn off your nexus,then turn on holding volume up and power,can you enter into mode where you can access your sd card?
Can you see your files from sd then?
Click to expand...
Click to collapse
No, It doesn't see it in recovery either. If I go to Mounts and Storage section and do a "Mount /sdcard" it just give a "Error mounting /sdcard!" warning
Same if I try to format /sdcard. I just get
Code:
Formatting /sdcard....
Error mounting /sdcard!
Skipping format...
Done

A couple of other pieces of the puzzle
The phone was encrypted before upgrade (and since reencrypted)
When I go to settings -> storage, I see what looks like the contents of the storage flashing up before disappearing

HI there.
I used to have same problem all day and I found a solution which works for me.
Under flashboot I put older version of recovery-clockwork-5.0.2.0-crespo. Only with this one it allows me to see actually usb mount storage.
I still can't mount the storage card for flash, but I can see it in my laptop. So I do full format in fat32. (It takes about an hour).
After that everything was fine.
Hope this works for you too.

Mitax said:
Hope this works for you too.
Click to expand...
Click to collapse
Thanks for suggestion. I try but still not seeing the sdcard storage and mount / format from recovery give same error as above

Desire S / frozen at boot + problem writing to sdcard from twrp

hello,
My phone (HTC Desire S S510e) is frozen on boot screen, after trying to install a new ROM. For some reasons, my backup made with TWRP cannot be restored.
After different tries for resintalling/restoring, my status is the following:
- no OS installed / no OS booting : phone stuck at boot on HTC logo
- phone is S ON, HBOOT Unlocked, v2.00.0002
- TWRP 2.6.3.0 installed
- external sd card wiped many times using TWRP (I went many times between TWRP 2.6.3.0 <=> 2.6.3.1 trying, wiping options not being exactly the same).
I am now trying to get back to a working OS using CM 12.1 (from http://forum.xda-developers.com/htc-desire-s/development/rom-cyanogenmod-12-1-nightlies-t3071051). I have put the the zip file on the external microSD card (ext4, no journal, formatted from a linux box).
Installing the ROM zip from TWRP, I get the the following failure messages:
e:Unable to mound '/sdcard'
e:Unable to recreate and-sec folder
[...]
could not detect filesystem for /dev/block/platform/msm_[...]
[...]
Screenshot : https://dl.dropboxusercontent.com/u/102556377/20161105_155908.jpg
Is there a problem with my external microSD card ? any other suggestions ?
thanks
Tom

Maybe you haven't setup SagaOpt. I had similar problems on my Desire S "SAGA" when I flashed TWRP for SagaOpt.
I flashed TWRP for SAGA and now TWRP seems to be behaving itself.

lingowistico said:
Maybe you haven't setup SagaOpt. I had similar problems on my Desire S "SAGA" when I flashed TWRP for SagaOpt.
I flashed TWRP for SAGA and now TWRP seems to be behaving itself.
Click to expand...
Click to collapse
hi and thanks for answering,
from your post, my understanding is : there are two separate versions of TWRP , one is for "saga", one for "sagaopt" (I didn't know that, and will try both).
Since my initial post, I had the phone work "a little better": I managed to have a CM13 booting on the phone. I think the way I managed to install without the previous error messages was by formatting my external sdcard using fat32. I don't understand why it made things go better.
Now I'm stuck on "Encryption unsuccessful" message (like in this post: http://forum.xda-developers.com/showthread.php?t=1447303).
By reading a few others posts, seems like the problem is related to internal memory card and/or external microSD card partition type. Still very unclear to me about what to do next. Any suggestion welcome !
thanks
Tom

thomasveymont said:
hi and thanks for answering,
from your post, my understanding is : there are two separate versions of TWRP , one is for "saga", one for "sagaopt" (I didn't know that, and will try both).
Since my initial post, I had the phone work "a little better": I managed to have a CM13 booting on the phone. I think the way I managed to install without the previous error messages was by formatting my external sdcard using fat32. I don't understand why it made things go better.
Now I'm stuck on "Encryption unsuccessful" message (like in this post: http://forum.xda-developers.com/showthread.php?t=1447303).
By reading a few others posts, seems like the problem is related to internal memory card and/or external microSD card partition type. Still very unclear to me about what to do next. Any suggestion welcome !
thanks
Tom
Click to expand...
Click to collapse
Here's a short explanation that I got about Saga and SagaOpt.
Here's the latest TWRP for Saga 2.8.7.0 and here's TWRP for SagaOpt 2.8.7.1.
That's all I know at the moment, I'm new to HTC.

Mmm... this /data versus /system path may be relevant. in solving my problem.
I will dig more into this and come back with news in this thread.
thanks again

Just to let you now the problem is now solved :
- using TWRP 2.8.7.1 for "sagaopt" + CM 12.1 for "sagaopt".
- by changing my external microSD card. The first one got sort of corrupted (though working fine under Windows with fat32, maybe it's only a partitionning issue / partition table issue more than a real physical corruption)
- by launching wipe => format all in TWRP before installing CM
thanks for helping
Tom

thomasveymont said:
Just to let you now the problem is now solved :
- using TWRP 2.8.7.1 for "sagaopt" + CM 12.1 for "sagaopt".
- by changing my external microSD card. The first one got sort of corrupted (though working fine under Windows with fat32, maybe it's only a partitionning issue / partition table issue more than a real physical corruption)
- by launching wipe => format all in TWRP before installing CM
thanks for helping
Tom
Click to expand...
Click to collapse
Sure, you're welcome.
So, how's CM13 working for you? I tried CM12.1 and it was barely usable due to the slowness (not trying to offend devs, just making an observation).

[SOLVED] TWRP can't mount internal storage - the problem is coming back...

I wanted to update my rooted Android Nougat to Oreo and also go from SuperSU to Magisk. During that process I discovered that TWRP recovery couldn't mount my internal storage.
I quickly saw on a lot of sites that it's a well-known issue, and I solved it by converting from ext4 to ext2 and back again. Now my phone is running perfect. All apps are installed, data and settings are restored with Titanium and root with Magisk is working fine. But then I remembered about the issue with TWRP and booted into recovery - just to discover the problem is back again. I can't mount my internal storage. So I can't flash zip files, I can't do a backup etc.
When I search xda or the web in general, I can't figure out why the problem has occured again. Also I can't find out how to fix it without losing all my data. Can anybody answer these two questions? Why is this happening again and how do I permanently fix it? And can it be with all my data on my phone - because I'm not able to do a backup.

Michael B.N. said:
I wanted to update my rooted Android Nougat to Oreo and also go from SuperSU to Magisk. During that process I discovered that TWRP recovery couldn't mount my internal storage.
I quickly saw on a lot of sites that it's a well-known issue, and I solved it by converting from ext4 to ext2 and back again. Now my phone is running perfect. All apps are installed, data and settings are restored with Titanium and root with Magisk is working fine. But then I remembered about the issue with TWRP and booted into recovery - just to discover the problem is back again. I can't mount my internal storage. So I can't flash zip files, I can't do a backup etc.
When I search xda or the web in general, I can't figure out why the problem has occured again. Also I can't find out how to fix it without losing all my data. Can anybody answer these two questions? Why is this happening again and how do I permanently fix it? And can it be with all my data on my phone - because I'm not able to do a backup.
Click to expand...
Click to collapse
The problem occurs when you use a ROM which encrypts the software or the ROM your flashing has an encrypted kernal. The only way out is to flash a ROM which doesn't encrypt. It is a known problem with TWRP and we have to wait for the TWRP team to update TWRP to handle quota allocation.

It seems the problem is solved for me. I flashed the TWRP version from this link: https://forum.xda-developers.com/showpost.php?p=77296102&postcount=1243
First I tried from Odin but it didn't work. Then I installed the TWRP app from Google Play and flashed the other file, rebooted to recovery, and it seems to work. I can mount my internal storage, make a backup etc. So this is the solution for me.

I had also similar problem of internal storage 0mb and i was not be able to mount my data
so when i flash color recovery by nobody
It's gone because it's allready patch by him
I think it's issue of encrypt data so just flash this recovery from nobody post
https://forum.xda-developers.com/galaxy-s7/themes/recovery-twrps-colored-t3859323

Hey guys
wondering if somebody can assist me with my issue. I can mount the internal storage via twrp, and can copy files etc over to the internal storage on my pc. But when i go into file manager nothing appears. even though i indicate that it show me the internal storage. any ideas?

isgakbrfc said:
Hey guys
wondering if somebody can assist me with my issue. I can mount the internal storage via twrp, and can copy files etc over to the internal storage on my pc. But when i go into file manager nothing appears. even though i indicate that it show me the internal storage. any ideas?
Click to expand...
Click to collapse
i think you must try with different file mngr, that one have no ability or permission to read system files

noniboyba said:
i think you must try with different file mngr, that one have no ability or permission to read system files
Click to expand...
Click to collapse
I'll re flash later and try a different file manager. Otherwise I'll install treble or re flash stock and start over

isgakbrfc said:
Hey guys
wondering if somebody can assist me with my issue. I can mount the internal storage via twrp, and can copy files etc over to the internal storage on my pc. But when i go into file manager nothing appears. even though i indicate that it show me the internal storage. any ideas?
Click to expand...
Click to collapse
same problem, have you found solution ? please help me

TWRP sometimes can't mount the storage, the storage is encrypted, but don't worry. You can still flash your files and rewrite system partion. But in order to show the Storage, you have to use a different version of TWRP. Why am I saying this is mentioned following:
I installed the latest version of twrp, It didn't ask for any password patter to decrypt my storage. So , different XDA posts made me understand that , formatting everything, factory reset will decrypt my storage. And trust me, I have done it several time, several times my brother but it didn't decrypt my storage. I couldn't backup my ROM and without backing up my ROM, I didn't take the risk of flashing new ROM. I waited. This twrp couldn't even mount my system partion. So I seeked knowledge from different person. It took a lot of effort.
Then I learned that, I should change this version of TWRP. I changed to an older version and it didn't decrypt my internal storage after formatting, but it mounted my system partion. Since, it couldn't decrypt my internal storage, I couldn't take backup of my rom and save it to internal storage. so I inserted a pendrive in my phone, and saved the backup of my rom there.
Permanent Solution​
Flashing DM Verity Force Encryption Disabler will decrypt your storage instantly. But in my case, it aroused another problem, None of the security measures of my phone worked afterwards. FOD, pin, password, pattern none of them worked. I don't know the reason but I don't suggest it with my little knowledge. but almost every rom flasher use them, so I thing I have to study about them to know how they work.​
second and best option: start trying older version of TWRP, the good one will be the one to ask the password the recovery in the beginning. It will decrypt your internal storage.​
I was brief here, if anyone doesn't understand these things, let me know, I will explain them step by step because I know the pain of being NEWB.