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Unable To Mount SD Card via TWRP

OP getliketie

31st July 2012, 09:29 PM   |  #1  
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I have had my Nexus S 4g rooted for sometime and have flashed many roms, so I'm not a complete nooby... but for some reason I'm stumped right now.

I woke up this morning to my phone in the TWRP recovery thing and I just tried to restart my phone but it wouldn't boot up so I figured I would just restore to a previous ROM and all of my backups were just gone. This is the error I have: error opening /sdcard/TWRP/BACKUPS/randomcharacters

But that was way at the bottom, above it I see all these notifications saying that nothing is mounting... so I go and wipe all my stuff to try to re-install the ROM I already had because it had been working very nice and it was just gone. Couldn't find it at all so I figure ok... let's just mount it and put the ROM on my phone... but when I try that my computer tells me that I need to insert a disk into the removable disc.

So right now I really have no clue what to do and I can't use the one click stock since I can't get to my phone to turn on USB debugging.

Any help?

Sorry if this has been answered elsewhere but I was unable to find anything similar.
1st August 2012, 01:05 AM   |  #2  
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And I have tried unrooting using this site:
nexusshacks. com/nexus-s-4g-hacks/how-to-unroot-nexus-s-4g/

However, it doesn't work after "fastboot flash system system.img"
1st August 2012, 06:36 AM   |  #3  
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And when I go look at the log thing in TWRP I get this:

*Verifying filesystems...
*Verifying partition sizes...
E: Unable to mount /system
(x20 with different things!)
E:failed to mount /sdcard (No such file or directory)

Gah! Have no idea how this happened!!
1st August 2012, 09:02 AM   |  #4  
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Quote:
Originally Posted by getliketie

And when I go look at the log thing in TWRP I get this:

*Verifying filesystems...
*Verifying partition sizes...
E: Unable to mount /system
(x20 with different things!)
E:failed to mount /sdcard (No such file or directory)

Gah! Have no idea how this happened!!

Can you go into fastboot? I would try to fastboot flash recovery, flash CWM and start from there. If it still wouldn't work i would presume that either your NAND went bad or that somehow the partitions got screwed... I do remember something similar happening to me on my wife's SGS and the solution was a Odin flash of a stock ROM to restore the partitions.
1st August 2012, 04:39 PM   |  #5  
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Quote:
Originally Posted by DeuXGod

Can you go into fastboot? I would try to fastboot flash recovery, flash CWM and start from there. If it still wouldn't work i would presume that either your NAND went bad or that somehow the partitions got screwed... I do remember something similar happening to me on my wife's SGS and the solution was a Odin flash of a stock ROM to restore the partitions.

I can go into fastboot! That is the mode I'm in.

I am currently trying to unroot my device using the unroot guide from nexusshacks. com but I get a forever hang time when it is writing my system.

So I just flashed CWM but I am no sure what to do from here! I tried mounting sd card and usb but neither worked. However, I did see an option to format my sd card. Should I do that directly from CWM? And in the advanced menu I see an option to partition my sd card.

At this point I just want to have my phone back in working condition.
1st August 2012, 05:45 PM   |  #6  
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You can try to format the SD card, but i think it won't work... If it doesn't work try to search for Odin and the files to restore to stock ROM, maybe it can fix the partitions... The SD card partition option in CWM i never used, so i'm not sure what it does in this case.
2nd August 2012, 10:20 AM   |  #7  
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So I tried the Odin and I'm still stuck in the writing system stage... I have no idea what to do at this point.
2nd August 2012, 10:28 AM   |  #8  
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Quote:
Originally Posted by getliketie

So I tried the Odin and I'm still stuck in the writing system stage... I have no idea what to do at this point.

Seems your NAND reach its end. There's allot of topics regarding that problem with the Nexus S and every single one of them ended up with the OP sending the phone to Samsung or getting a new phone...

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