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[Q] Unable to mount /fat. What are my options?

Alright guys, I hate to do this. I've been messing around with this stuff for years now, but I'm still an amateur compared to most everybody around here. I've messed up a lot of phones and have been able to pull them from the brink before through a combination of google-fu and dumb luck. This time I haven't been able to do it yet after about 10 hours of work. Here's the rundown:
Had a stock HTC One S (T-mobile and updated OTA to jellybean) until yesterday.
Unlocked the bootloader the official HTC way.
Got root access.
Flashed TWRP 2.5(hopefully the right version)
Flashed a Rom
Bootloop
Mess with stuff, wipe some things, reflash, but still bootloop. No recovery.
Here's where I am now:
I can get into the bootloader and recovery and I have fastboot access.
I can push files in adb and do whatever with fastboot.
Now here is where I am stuck. Every time I try to wipe, flash or anything I get the message E:Unable to mount /fat
I would love some help from anybody on this. I have searched high and low for the same problem but came back empty handed except for feeling that it has something to do with partitioning.

srk10 said:
Alright guys, I hate to do this. I've been messing around with this stuff for years now, but I'm still an amateur compared to most everybody around here. I've messed up a lot of phones and have been able to pull them from the brink before through a combination of google-fu and dumb luck. This time I haven't been able to do it yet after about 10 hours of work. Here's the rundown:
Had a stock HTC One S (T-mobile and updated OTA to jellybean) until yesterday.
Unlocked the bootloader the official HTC way.
Got root access.
Flashed TWRP 2.5(hopefully the right version)
Flashed a Rom
Bootloop
Mess with stuff, wipe some things, reflash, but still bootloop. No recovery.
Here's where I am now:
I can get into the bootloader and recovery and I have fastboot access.
I can push files in adb and do whatever with fastboot.
Now here is where I am stuck. Every time I try to wipe, flash or anything I get the message E:Unable to mount /fat
I would love some help from anybody on this. I have searched high and low for the same problem but came back empty handed except for feeling that it has something to do with partitioning.
Click to expand...
Click to collapse
not sure but it can be possible that some partitions are damaged.
run the latest ruu to restore all the partitions.
twrp 2.5.0.0 have some problems with custom roms,
try twrp 2.3.3.0, it seems that this version has mostly no problems with flashing roms.
do not forget to flash the boot.img after flashing the rom or you will get a bootloop.
before flashing a rom wipe 3x system 3x data 3x cache to be sure that your phone is clean of old system stuff.
here is the link for twrp 2.3.3.0
https://www.dropbox.com/s/pvspwkekl42zkqa/openrecovery-twrp-2.3.3.0-ville.img

Thanks so much for the reply. I downgrade to twrp 2.3 and managed to use the windows utility to reformat my sd card. Wasn't sure that wasn't going to shoot me in the foot, but it worked and I am back in business with a phone that boots.

[Q] xt926 CM10.2 Stuck on Boot Logo After 1st Reboot

xt926 with unlocked bootloader and can run 10.1 nightly from get.cm with no problem. However, when I install a 10.2 nightly - whether from get.cm, epinter, dhacker or skrilaz - even though the initial boot comes up clean, rebooting after the initial boot gets stuck on the boot logo.
I have tried different recovery images - cwm, twrp, oudhs - and different versions of each.
I have tried clean installs, full formats and dirty upgrades from 10.1.
I have tried multiple force boots from this state (power+vol up).
I have tried with and without the updated gapps and UPDATE-SuperSU-v1.51.zip.
Restoring from backup does not get past this hang. The only way out is to revert to stock (I use mattlegroff's DROID_RAZR_HD_Utility_1.21).
Does anyone have any idea how I might get past this or even get a log?

Only thing that fixed this for me was to flash back to stock 4.1.2, flash newest CWM touch recovery, then flash newest nightly, Gapps, and SU. Then, a popup comes up saying something about the ROM wants to flash your boot image, and asks if you'd like to fix this. I answered YES (fix) and been working since.

Any chance you could link where you got your recovery and SU?
Much appreciated.

Same issue here...
I've also tried everything listed above. I've done everything i can possibly think of to get cm 10.2 on my xt926. For some reason my phone just isn't making it after the first reboot. I've searched and found similar issues but none of the troubleshooting has been working for me. I hope to find a way around this. I need that 10.2!

Same issue here. Not just CM, every 4.3 based ROM I've tried has either failed to boot or failed to boot more than once (more often than not, they won't boot at all).
I've been at this for hours, but I've had no success so far. I'll let you know if I come up with anything.
EDIT:
Here's my setup:
After every try, I flash back to stock 4.1.2 with VZW_XT926_4.1.2_9.8.1Q_62_VQW_MR-2_VQW_CFC.xml. I've edited it so it doesn't flash the stock recovery and so it flashes a modified logo that doesn't show the bootloader warning. Partway through, I booted up and updated to the latest OTA, so I had to comment out the tz.mdm files as well. I was using TWRP 2.2.2.1, but I updated to 2.6.0.0 earlier.

GeorgeHahn said:
Same issue here. Not just CM, every 4.3 based ROM I've tried has either failed to boot or failed to boot more than once (more often than not, they won't boot at all).
I've been at this for hours, but I've had no success so far. I'll let you know if I come up with anything.
EDIT:
Here's my setup:
After every try, I flash back to stock 4.1.2 with VZW_XT926_4.1.2_9.8.1Q_62_VQW_MR-2_VQW_CFC.xml. I've edited it so it doesn't flash the stock recovery and so it flashes a modified logo that doesn't show the bootloader warning. Partway through, I booted up and updated to the latest OTA, so I had to comment out the tz.mdm files as well. I was using TWRP 2.2.2.1, but I updated to 2.6.0.0 earlier.
Click to expand...
Click to collapse
one of 2 things should fix this problem,
use cwm 6.0.3.5 from here or
go to recovery/mounts and storage and format the data-media line (i know it says sd card but its internal, do not format the external ed card line or you will loose data on it)
also i updated matts utiliity to the latest ota, so you dont have to take the ota just to get the baseband. its in the dev forum. i will be updating it to a newer version if you wait until later, with the newest recoveries.
edit, btw 2.6.0.0 is not the latest twrp although i recommend using cwm as some have had issues with twrp including me.

First off, the latest TWRP seems to have fixed the problems (for me, anyway). Second, you'll need to use the most up-to-date GAPPs when you flash. Also, a lot of people have noted that mounting sytem prior to doing their wipes has solved the reboot issues.

Thanks a ton for the help. Flashed latest CWM and bumped up to 4.4 and everything's working fine. I appreciate the help!

How can I get root and custom ROMming back?

Hi
At the weekend I tried to update my TF300T from CM10.1 to CM10.2. That didn't work as I ended up in a boot loop. Then I thought, maybe I need to flash the latest system blob.
So I did that, only to find that I then couldn't install anything from zip or sd card as the recovery would not mount anything at all. Still got fastboot, so I've tried TWRP 2.6. TWRP 2.5, TWRP 2.4 and CWM, none of them will mount anything at all.
So I find myself with stock ROM, but no way of rooting or installing any custom ROMs.
I'm sure I've made a bloop somewhere, so all suggestions to resolve welcome!
Thanks
Rob

What is your bootloader? Sometimes, if you reflash the same recovery, it *may* work properly the second time around.
I am using TWRP 2.6 with my 127.5 bootloader, just for your knowledge.

aarsyl said:
What is your bootloader? Sometimes, if you reflash the same recovery, it *may* work properly the second time around.
I am using TWRP 2.6 with my 127.5 bootloader, just for your knowledge.
Click to expand...
Click to collapse
That was the tip I needed - I knew I had the right bootloader but I had downloaded the wrong TWRP (I had flashed the JB version instead of the 4.3 version). Doh!
Now flashed CM10.2 and is running Android 4.3. CPU-Z tells me I'm rooted though at the moment I can't get any root apps to work with SuperSU. I'll leave that for another day!
Rob

TWRP Recovery

Hello, I am having some problems installing a working recovery, here is my story... So first the device was 10.6.1.27.5 and its unrootable, so i downgraded to 10.6.1.15.3, where I installed TWRP recovery, and flashed CM 10.2 ROM, but it was too glitchy, so i wiped all data, and fastbooted 10.6.1.15.3 build and stock ROM. So I am now stock,
I am rooted using MottoChop method, and I cant install a custom recovery... I tryed to install TWRP 2.5.0.0 thats the version I was on before, and also tied 2.6.3.0, when flashing the .blob My device turns unresponsive, even when rebooting it with fastboot.
So left with no choice i tried flashing the .img one for JB, (Note: It is currently NOT a OTA update, but manual, so i used the 4.2 first)
I was Able to Flash the custom recovery 2.6.3.0 JB.img and it booted up and worked fine, but then it couldnt mount anything,
I was getting error message:
E: Cant mount /data
and so on... I then tried to flash 2.5.0.0 and got the same result.
GooManager cant find a recovery script for this device...I flashed the TF300T, since thats the kind i have not TF300TG
Im really lost now... I tried ClockworkManager to find a recovery and it said the same thing, I dont want to flash a CWM with flashboot since i here It is terrible.
Any Help Is greatly Appreciated

I notice that alot of these problems, I end up fixing myself... I fixed the issue
But If anyone ever comes into the same situation, heres the fix...
UPDATE to 10.6.27.5 (Yes newest version) Im using US...
Install openrecovery-twrp-2.5.0.0-tf300t-4.2.blob IMPORTANT dont flash the JB version because its only for OTA updates
Open recovery and TWRP will prompt you to install, and beleive it or not, but apparently you can root the newest version,
Just not With MottoChopper and other quick root methods!
If you have any more question, post!

Update Build W/O a Computer

Ok, let me start by saying that I'm fully capable of updating my phone with a computer, I'm just hoping there is a better way. So far every time I've downloaded a new firmware, update the flash-all.bat and run it, something will fail towards the end of the update and the only way I've been able to successfully update is by using one of those tool kits (forget which one, it's on my computer). I'm not that concerned about all of that with this thread. I'm wondering if there is a way to do it without a PC.
I'm on NMF26O (root, ElementalX, etc) and tried flashing Pure Nexus over the weekend. Since it's based on NMF26V, I kept receiving an error on boot about updating my vendor.img. So I downloaded that firmware, extracted it, and flashed the vendor.img in TWRP. That led to a plethora of other issues that I couldn't resolve by flashing the boot.img, reflashing the rom, ect. Several hours later I ended up flashing the boot.img and vendor.img for NMF26O, restoring my backup, re-installing Elemental, and rooting again.
Since these updates will be coming out every month, and roms will always be based on the latest update, I feel like I'll be pulling out the computer every month, downloading the updates, modifying the flash-all.bat, and running it through the tool, just to be able to update my rom. The first time I forget to update flash-all.bat, I'll lose the 60+ GB's I keep in internal storage. There has to be an easier way. TWRP is capable of flashing images. Has anyone been able to update without using a computer? I don't care if my radio is out dated, or something is mismatched as long as my phone works as intended.
Sent from my Pixel using Tapatalk

Not sure why you ran into issues with PN. You need to be on the latest build NMF26U. You can flash the ROM via recovery. Then tku have to reboot once and go back to recovery and flash the V vendor image because the ROM is based on NMF26V. Each time a new ROM comes out on a new build you can flash in recovery.
If your talking about flashing stock OTAs via recovery that's not possible yet. No need to do this if you're going to be using custom ROMs though

aholeinthewor1d said:
Not sure why you ran into issues with PN. You need to be on the latest build NMF26U. You can flash the ROM via recovery. Then tku have to reboot once and go back to recovery and flash the V vendor image because the ROM is based on NMF26V. Each time a new ROM comes out on a new build you can flash in recovery.
If your talking about flashing stock OTAs via recovery that's not possible yet. No need to do this if you're going to be using custom ROMs though
Click to expand...
Click to collapse
I'm on NMF26O. What's the difference between it and NMF26U and why would the vendor image from NMF26V work with NMF26U but not NMF26O?
Seems like all you would need is the /system from the rom, the vendor image, and maybe the boot image (or a custom kernel). I think I'm missing something here.
Sent from my Pixel using Tapatalk

If you install PN its based on NMF26V. So unless you are already on that then you would need to flash the ROM, reboot back to recovery, then flash the NMF26V vendor image.

I'll play devil's advocate here... Yeah there is an easier way, use your Pixel stock and take OTA's. Enjoy a phone that always works, with or without a laptop!
I understand my audience and realize this isn't a popular mantra here but I felt exactly like you did with my 6p and vendor images. I got to the point where I sacrifice root now just for my own sanity. My phone works for me, not the other way around.

What I do is side load the full OTA ( which you can get from the same place you get the factory images ). I only use the fastboot boot version of TWRP so that my stock recovery stays in place. Then all you have to do is boot into the stock recovery, adb side load the OTA file and re root. Then you're fully up to date without worries of your data being wiped :laugh:!
( Although if you look in the flash fire thread from Chainfire, he's working on a version that will let rooted pixels flash otas like normal ones :fingers-crossed: )

I think you guys are missing the point. I have no desire to ever be stock, which rules out the possibility for an OTA in any form.
What I'm trying to figure out is exactly what is necessary to make a custom rom (based on the latest OTA), work if flashed over an older build, without first somehow applying the full OTA. Or is it impossible?
On just about every other phone I've owned, we could piecemeal the files needed for minor updates, along with a custom rom. The only time we'd have to flash a full update is for major updates ( 4 to 5 to 6, etc).
Sent from my Pixel using Tapatalk

Ok, I figured it out. Just download the OTA.zip (not the full firmware), flash in TWRP, immediately flash TWRP again, and reboot.
I'm now on nmf26u.
Sent from my Pixel using Tapatalk

joshw0000 said:
Ok, I figured it out. Just download the OTA.zip (not the full firmware), flash in TWRP, immediately flash TWRP again, and reboot.
I'm now on nmf26u.
Click to expand...
Click to collapse
I don't think we can just flash OTAs in twrp yet. Haven't heard of Antone doing it. There is a beta Flashfire out that I guess works to flash updates. J have it but haven't needed to try it cause I'm running PN and DU

aholeinthewor1d said:
I don't think we can just flash OTAs in twrp yet. Haven't heard of Antone doing it. There is a beta Flashfire out that I guess works to flash updates. J have it but haven't needed to try it cause I'm running PN and DU
Click to expand...
Click to collapse
I've done it several times tonight. Went from O to U to V, flashed Pure Nexus, screwed up the rom, restored to O, then O flashed back to U and V.
Just flash it like a rom in TWRP RC1. Make sure you flash TWRP again before rebooting if you want to keep it.
Sent from my Pixel using Tapatalk