Help! Cannot mount /data - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

I've been having issues right now where im getting my device to boot up ONCE, and then it freezes on the Samsung Galaxy S4 logo, and its having issues mounting /data which i think is why its not booting. To get it to even boot fully i have to format /data and do a full factory reset, and it will boot up a restored nandroid once.
I tried odin flashing to stock, but i cant even get it to boot up past the Samsung Galaxy S4 logo again. When i go into stock recovery i get the broken android with a triangle, and it says below cannot mount /data.
I don't know why this is happening, I have been switching between my 2 nandroid backups flawlessly for a month and only now im having issues :l.

If it doesn't say custom just go get a new one under warranty. ^_^ Save yourself some time if you have a backup.
Sent via Tapatalk4 on I337

byte9 said:
If it doesn't say custom just go get a new one under warranty. ^_^ Save yourself some time if you have a backup.
Sent via Tapatalk4 on I337
Click to expand...
Click to collapse
It's on Stock Official firmware now, but it says Custom. This is right after an Odin flash, so there is no root or anything.

Now i tried flashing CWM, but upon trying to enter recovery it just hangs on recovery booting.

Related

Blackscreen and boot to twrp

I have an international I9505. Stock rom rooted with cf auto-root and twrp 2.5.
I have been using it since I first got it at launch date. Just a while ago, I took out my microsd card without unmounting it first. I restarted my phone. Now, whenever I try to turn on my phone, it will show the Samsung S4 logo and then stuck at black screen. After that it will auto bootup again but to twrp recovery. I can't seem to boot it normally.
Any solution that I can do right now? Other than flashing it with original stock rom.
lzk123 said:
I have an international I9505. Stock rom rooted with cf auto-root and twrp 2.5.
I have been using it since I first got it at launch date. Just a while ago, I took out my microsd card without unmounting it first. I restarted my phone. Now, whenever I try to turn on my phone, it will show the Samsung S4 logo and then stuck at black screen. After that it will auto bootup again but to twrp recovery. I can't seem to boot it normally.
Any solution that I can do right now? Other than flashing it with original stock rom.
Click to expand...
Click to collapse
First just try doing an advanced wipe with cache and dalvik cache checked.
If that doesn't work I'm just letting you know if you flash the stock firmware via odin you will not lose any data, just root and you can easily re-root your phone.
thunderserpent said:
First just try doing an advanced wipe with cache and dalvik cache checked.
If that doesn't work I'm just letting you know if you flash the stock firmware via odin you will not lose any data, just root and you can easily re-root your phone.
Click to expand...
Click to collapse
Thanks. My phone is back to normal now.

[Q] [Wind] I tried flashing FoxHound ROM, and soft-bricked my phone. Any fixes?

Alright... where to begin? Lets start at what happened around yesterday. Prior to the whole weekend, I had CyanogenMod 10.1 installed on my rooted S4. Come Friday, I start to miss some of the stock Samsung features such as Air Gestures, Smart Stay, the stock Samsung camera, and all that. So, I install WanamLite (a custom rom) on my phone. It's good and all but for some reason, the Smart Stay isn't working. To fix this, I go online and start digging; I find people saying "yo, revert back to the original firmware and re-install the Rom, that should fix your LTE problem." I think to myself, "maybe this could help me too." And that's exactly what I do. I go online to SamMobile and download this ROM (http://www.sammobile.com/firmwares/?page=1&model=SGH-M919V&pcode=0#firmware). It installs with Odin and I was able to get back to the Stock Samsung firmware. I then proceed with my plan and install WanamLite; that also worked. So I'm all happy and stuff 'cause Smart Stay finally works but, shortly after fiddling with the re-stocked device, I get bored again. So, I start searching the forums for another rom to replace WanamLite (it was a good rom, but I wanted to try something else before settling down on it).
I find this ROM in the XDA-Developers S4 forum: http://forum.xda-developers.com/showthread.php?t=2303239. I try installing it; it works fine. But then, I notice that half my SD card is used up. So, I go into TWRP and click on Format Data (I'm not too sure about the name, I had CWM prior to the re-installation of Samsung stock firmware). After resetting the Data, I boot back into the phone and notice that the default layout is Easy Mode. (On the bright side, I freed 4 GB from my SD card). Easy Mode's incredibly annoying, so I wrestle with the phone for a while to change the launcher to Nova launcher, but to no avail. In the end, I decide to reflash the FoxHound ROM. I place the rom on my phone and boot into TWRP. That's where the problem comes. I selected: wipe cache, wipe delvic cache, wipe data. Then I wiped the cache and data, flashed the rom and, after that is when the phone started refusing boot up. From then on, it just displayed Samsung Galaxy S4 logo on the screen whenever I tried to start it.
What I tried to fix the issue: Re-installing the stock samsung firmware. (I think I ended up screwing up the phone even more with this. Before, I had TWRP installed but I couldn't boot into it, now I don't have any custom recovery installed and I still can't boot into the phone).
I can access the Download Mode and use Odin. I cannot boot into the recovery. When I hold Volume Up + Power + Home, it just says recovery in blue above the logo, and then, the phone reboots.
So, any ideas on how to fix it?
TL;DR: Tried installing FoxHound Rom. I wiped Delvic Cache, Cache, and Data, and after flashing the rom, the phone refused to boot up; it gets stuck on the Samsung logo. Before flashing, I did Format Data. After being unable to boot into the phone, I tried to flash the Stock Samsung Firmware on my S4. Nothing worked. Any ideas on how I should proceed?
splitinferno said:
So, any ideas on how to fix it?
Click to expand...
Click to collapse
Try using Odin mode to install Stock Samsung Firmware...
If it doesn't work,
Install Samsung Kies, put Phone into Odin mode, connect the USB and let KIES reinstall the whole firmware... Go to "Tools" -> "Emergency Firmware Recovery"
psycovirus said:
Try using Odin mode to install Stock Samsung Firmware...
If it doesn't work,
Install Samsung Kies, put Phone into Odin mode, connect the USB and let KIES reinstall the whole firmware... Go to "Tools" -> "Emergency Firmware Recovery"
Click to expand...
Click to collapse
I've already tried flashing the Stock Samsung Firmware using Odin, it didn't work. Also, I'm having no luck with Kies; it won't connect. Any other suggestions? :/
EDIT 1: Okay, so here's the deal right now: I was able to flash TWRP using ODIN. This granted me access to my recovery, somehow. So right now, I have the FoxHound_GearEngine0.2 ROM installation files on my SD card and I am booted into the recovery. What should I do? Should I try flashing again? For now, I'll just wait for a response.
EDIT 2: Out of curiosity and impatience, I tried flashing FoxHound but got an error:
Updating Partition Details
E: unable to mount data
E: unable to mount internal storage
TWRP v. 2.5.0.3
Go into the advanced menu in TWRP and try to mount data / internal storage. If you can't, then you're back to odin unless someone can find out something else
maazali said:
Go into the advanced menu in TWRP and try to mount data / internal storage. If you can't, then you're back to odin unless someone can find out something else
Click to expand...
Click to collapse
I tried to; it didn't work. I also tried clockworkmod recovery. That recovery said it said that the data was already mounted. For some reason, now the phone is stuck in a bootloop. On the bright side, I can freely access my recovery (although I can't do much in it). Should I try flashing other stock roms?
EDIT: Flashing the stock rom brought it back to the state it was in earlier. So now, it just hangs on the Samsung Galaxy S4 screen and no longer reboots continuously. I'm thinking of downloading other stock roms and flashing those.
UNBRICKED
splitinferno said:
I tried to; it didn't work. I also tried clockworkmod recovery. That recovery said it said that the data was already mounted. For some reason, now the phone is stuck in a bootloop. On the bright side, I can freely access my recovery (although I can't do much in it). Should I try flashing other stock roms?
EDIT: Flashing the stock rom brought it back to the state it was in earlier. So now, it just hangs on the Samsung Galaxy S4 screen and no longer reboots continuously. I'm thinking of downloading other stock roms and flashing those.
Click to expand...
Click to collapse
Alright, after struggling around with the device, I was able to unbrick it. I downloaded the stock ROM from samfirmware and flashed it using odin. After flashing it, it would stay on the Samsung Galaxy S4 logo and that's it and I wasn't able to boot into the recovery either. So, I flashed TWRP using odin and download mode, and found I was able to boot into recovery again. Screwing around with the recovery, I couldn't manage to do much so I decided to re-flash the stock firmware. After re-flashing, I had the same problem. This time, I tried accessing the stock recovery. I got access, which was something I couldn't get before. After getting access, I did Factory Reset/Data (it was something along those lines) and did a wipe cache. After wiping cache, the phone rebooted and, much to my delight, it was unbricked. After going through this, I think I might just like chill for like a month, or a year now with stock... .__.
Hahah nice job
Sent from my GT-I9505 using xda premium
splitinferno said:
Alright, after struggling around with the device, I was able to unbrick it. I downloaded the stock ROM from samfirmware and flashed it using odin. After flashing it, it would stay on the Samsung Galaxy S4 logo and that's it and I wasn't able to boot into the recovery either. So, I flashed TWRP using odin and download mode, and found I was able to boot into recovery again. Screwing around with the recovery, I couldn't manage to do much so I decided to re-flash the stock firmware. After re-flashing, I had the same problem. This time, I tried accessing the stock recovery. I got access, which was something I couldn't get before. After getting access, I did Factory Reset/Data (it was something along those lines) and did a wipe cache. After wiping cache, the phone rebooted and, much to my delight, it was unbricked. After going through this, I think I might just like chill for like a month, or a year now with stock... .__.
Click to expand...
Click to collapse
Next time don't wipe data in custom recovery because it will corrupt your data which would most probably end with not booting past the Samsung logo, if you want to wipe in a custom recovery for now you have to manually wipe system, cache and dalvik cache located in mounts in cwm recovery (not sure where to find it in twrp).
You should read a little before messing with things in recovery.
Ahahah that's funny because something similar happened to me. And I was going to suggest doing a factory reset via recovery because that's how I resolved my problem, then I see you did just that! (Y)
Sent from my GT-I9500

Please help! Soft bricked i9500

im in need of urgent help..i think i soft bricked my s4 when trying to restore my efs backup.
i tried downgrading my firmware to mf8..and the modem was flashed as well.
When i checked the imei it was null.
so i went on to restore it using method 2 on this thread http://forum.xda-developers.com/showthread.php?t=2392632&page=6
After i put everything into the terminal and it was restored, i rebooted my phone.
Now my phone is stuck at samsung boot logo!!
i tried restoring from my nandroid backup but it didnt work..still stuck at boot logo, i tried restoring the rom to stock, still stuck at boot logo.
Basically no matter what i do, its not booting and its stuck at boot logo.
I can access download mode and cwm recovery. On stock recover i get the error message "failed to mount /efs (Invalid argument)"
is there anything i can do at all?
i still have multiple backups of my efs folder..i just dont know how to restore it
please help
I'd suggest doing a flash of the stock firmware via ODIN.
xyzulu said:
I'd suggest doing a flash of the stock firmware via ODIN.
Click to expand...
Click to collapse
Tried that, still no luck
You can try via kies. Do not connect the phone yet. Pull the battery out and use the information you can see there. Ooen kies Go to upgrade settings and find the one that ask you for your model. Fill the blank, then enter your s/n. A window will show up asking you again. Accept. And kies is suppose to start dowloading the firmware. Make sure to conect the device in dowload mode before it finishs dowloading.
Im not saying it gonna work 100% for you but i had restore a couple samsung devices using this method.
I prefer odin btw.
Sent from my GT-I9505G using xda premium
ToledoG28 said:
You can try via kies. Do not connect the phone yet. Pull the battery out and use the information you can see there. Ooen kies Go to upgrade settings and find the one that ask you for your model. Fill the blank, then enter your s/n. A window will show up asking you again. Accept. And kies is suppose to start dowloading the firmware. Make sure to conect the device in dowload mode before it finishs dowloading.
Im not saying it gonna work 100% for you but i had restore a couple samsung devices using this method.
I prefer odin btw.
Sent from my GT-I9505G using xda premium
Click to expand...
Click to collapse
i downloaded latest software version for my phone (MG9) and flashed it but it didnt work (still stuck at boot screen).
I then tried flashing it with adonis.pit and that still didnt work (stuck at boot screen)
however the boot sound cuts out at the boot screen and im not sure what could cause that, and in stock recovery im getting failed to mount /efs (Invalid argument)
bump?
any more suggestions guys..im still stuck in boot
flashing firmware from this thread http://forum.gsmhosting.com/vbb/f777/galaxy-s4-gt-i9500-repair-imei-null-null-1685562/ solved my imei Null/Null problem
remember to back up your imei first before flashing any upgrade.. cek this http://forum.xda-developers.com/showthread.php?p=41559366
blue-line said:
flashing firmware from this thread http://forum.gsmhosting.com/vbb/f777/galaxy-s4-gt-i9500-repair-imei-null-null-1685562/ solved my imei Null/Null problem
remember to back up your imei first before flashing any upgrade.. cek this http://forum.xda-developers.com/showthread.php?p=41559366
Click to expand...
Click to collapse
Tried this, didnt work.
I've had the issue with being stuck on the boot screen before - and it was because I wasn't deleting my cache before flashing the new firmware. Do this from within recovery :good:
starscream0 said:
im in need of urgent help..i think i soft bricked my s4 when trying to restore my efs backup.
i tried downgrading my firmware to mf8..and the modem was flashed as well.
When i checked the imei it was null.
so i went on to restore it using method 2 on this thread http://forum.xda-developers.com/showthread.php?t=2392632&page=6
After i put everything into the terminal and it was restored, i rebooted my phone.
Now my phone is stuck at samsung boot logo!!
i tried restoring from my nandroid backup but it didnt work..still stuck at boot logo, i tried restoring the rom to stock, still stuck at boot logo.
Basically no matter what i do, its not booting and its stuck at boot logo.
I can access download mode and cwm recovery. On stock recover i get the error message "failed to mount /efs (Invalid argument)"
is there anything i can do at all?
i still have multiple backups of my efs folder..i just dont know how to restore it
please help
Click to expand...
Click to collapse
I hope this guide will help :http://forum.xda-developers.com/showthread.php?t=2403292
starscream0 said:
im in need of urgent help..i think i soft bricked my s4 when trying to restore my efs backup.
i tried downgrading my firmware to mf8..and the modem was flashed as well.
When i checked the imei it was null.
so i went on to restore it using method 2 on this thread http://forum.xda-developers.com/showthread.php?t=2392632&page=6
After i put everything into the terminal and it was restored, i rebooted my phone.
Now my phone is stuck at samsung boot logo!!
i tried restoring from my nandroid backup but it didnt work..still stuck at boot logo, i tried restoring the rom to stock, still stuck at boot logo.
Basically no matter what i do, its not booting and its stuck at boot logo.
I can access download mode and cwm recovery. On stock recover i get the error message "failed to mount /efs (Invalid argument)"
is there anything i can do at all?
i still have multiple backups of my efs folder..i just dont know how to restore it
please help
Click to expand...
Click to collapse
Flash an older modem with Odin, that should solve your poblem, look in my signature for available modems.
gee2012 said:
Flash an older modem with Odin, that should solve your poblem, look in my signature for available modems.
Click to expand...
Click to collapse
thanks for trying to assist. i was able to revive my phone using this method
http://forum.xda-developers.com/showpost.php?p=39523753&postcount=4

Note 4 SM-N910U on 5.0.1 Stock Recovery?

Hey guys,
So I rooted my Note 4 about 6 months ago using Odin and CF Auto root. Today I decided i wanted a custom recovery and opted to go with TWRP. I'm not sure what i did wrong, but its been a nightmare. Now my phone will not boot. I get the the red "recovery is not seandroid enforcing" message on the top and it just gets stuck on the screen which says Samsung Galaxy Note 4 . When i go to recovery mode, im able to access TWRP. And it seems to be installed and working. But i cant get my phone to boot and work like normal. I'm thinking if i can some how flash back the original STOCK Recovery with odin it may fix the issue? I really dont want to loose all my data. I did make a backup of boot, data and system with TWRP but this was only after the phone didnt boot.
So my main question is:
1. If i can find the stock recovery for my phone, and flash it over TWRP with odin would that fix things?
2. If not, could I flash back to factory rom (delete everything) Then re-root and try install TWRP again. And then restore the data / system backup i have stored on my external SD with TWRP to get back all my phones data?
Thanks in advance!

Bootloop error even after flashing stock rom with odin (G531H)

So, even after I flash the stock rom with odin, it starts then at setup a bunch of "this app has stopped working" errors and cant access the system, I even tried flashing a bunch of custom roms(through TWRP since I can use odin no problem) and they all get stuck on the logo(waited for an hour before flashing a different one) Dont know what to do.
After flashing the stock rom and accesing the stock recovery i get a "Unable to mount /efs Invalid comand" error
Has anyone faced a similar problem
EDIT: after about 20 mins, the boot logo animation gets really slow (for any custom rom) but it never gets passed that
aaronus23 said:
So, even after I flash the stock rom with odin, it starts then at setup a bunch of "this app has stopped working" errors and cant access the system, I even tried flashing a bunch of custom roms(through TWRP since I can use odin no problem) and they all get stuck on the logo(waited for an hour before flashing a different one) Dont know what to do.
After flashing the stock rom and accesing the stock recovery i get a "Unable to mount /efs Invalid comand" error
Has anyone faced a similar problem
EDIT: after about 20 mins, the boot logo animation gets really slow (for any custom rom) but it never gets passed that
Click to expand...
Click to collapse
What is the model of your phone?
aaronus23 said:
So, even after I flash the stock rom with odin, it starts then at setup a bunch of "this app has stopped working" errors and cant access the system, I even tried flashing a bunch of custom roms(through TWRP since I can use odin no problem) and they all get stuck on the logo(waited for an hour before flashing a different one) Dont know what to do.
After flashing the stock rom and accesing the stock recovery i get a "Unable to mount /efs Invalid comand" error
Has anyone faced a similar problem
EDIT: after about 20 mins, the boot logo animation gets really slow (for any custom rom) but it never gets passed that
Click to expand...
Click to collapse
Flash official frimware through odin them open recovery (official recovery) wipe cache then wipe data / factory reset then restart the phone
tasnim_tamim said:
What is the model of your phone?
Click to expand...
Click to collapse
Hi!, its a SM-G531h
ealam said:
Flash official frimware through odin them open recovery (official recovery) wipe cache then wipe data / factory reset then restart the phone
Click to expand...
Click to collapse
Tried, still same results
aaronus23 said:
Hi!, its a SM-G531h
Click to expand...
Click to collapse
I think you did some changes to your device that made the efs partition corrupt. I think the only thing you can do is take your device to Samsung to get it fixed. I am sure that the efs partition is causing the issues.
tasnim_tamim said:
I think you did some changes to your device that made the efs partition corrupt. I think the only thing you can do is take your device to Samsung to get it fixed. I am sure that the efs partition is causing the issues.
Click to expand...
Click to collapse
yeah, I figured as much
Hey, look
Install the official firmware (stock firmware) via Odin, then turn off your phone
Then, go to the stock recovery and wipe cash and data
And finally, turn on youe phone
If it doesn't boot up (stuck at bootloader)
Remove your battery and try again
You're welcome

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