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Newbie
Posts: 14
Registered: ‎03-20-2015
Accepted Solution

repair corrupted pendrive

Good Afternoon:

 

  I have a problem with a 4Gb pendrive that I know can be repaired, just haven't found the correct procedure. This flash (pen) drive was accidentally remove before 'shutdown" and now, cannot get it to "mount".  The data on it is insignificant, but, if possible, I'd like to keep it. Cannot format nor open this drive. Have run cat /proc/scis/scis and fsck. Will post results IF requested. I had another flash drive with the same symptoms and ended up junking it. Don't want to/ need to do that again!!! I'd appreciate someone: anyone who could help out!

Thank You:

Rick

SanDisk User
Posts: 66
Registered: ‎12-25-2014

Re: repair corrupted pendrive

Have you tried going to Disk Management yet and change the drive letter assigned to it? That could be a work around.
Newbie
Posts: 14
Registered: ‎03-20-2015

Re: repair corrupted pendrive

Hey stasher:

 

   I tried to change the designation from G:\ to J:\ and it did nothing. I tried to mount it and got "Does not contain a recognized file system". This is what has stopped me from being able to repair it. And, BTW, I have a Sandisk 16Gb that only shows 14.8 Gb, even when it's "supposedly" blank? Any ideas on that (i.e. missing about a full Gb). Thank s for responding

Stay Sharp:

Rick

Newbie
Posts: 14
Registered: ‎03-20-2015

Re: repair corrupted pendrive

ADDENDUM TO: repair corrupted pendrive

 

   I tried to "force mount" and got error report "lost boot designation". Would "Boot-Repair" help me correct this? Could you recommend a procedure that would repair this pendrive for operation?

THANX:
Rick

Newbie
Posts: 4
Registered: ‎02-11-2015

Re: repair corrupted pendrive

Rixter, your lost GB can be explained in this thread http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/Problems-with-16-GB-sandisk-cruzer/td-p/27...

 

Until the industry promotes products read as gibibytes or GiB (binary) then this will always be confused.

To have a FULL 16GiB available the drive would have to have a REAL storage capacity of 17.18GB (rounded) or 17179869184 Bytes.

The 16 GB Sandisk Cruzer starts out with only 15698231296 bytes or 15.7GB which is actually only 14.62GiB.

-Ric

Newbie
Posts: 14
Registered: ‎03-20-2015

Re: repair corrupted pendrive

TO : KyZIX

 

   Thanks for the link/explanation. I understood there was to be a certain amount of difference between advertised and actual useage. However, I didn't feel I should've lost 1.2Gb!!! I have an 8 Gb that actually allows for 7.6.Gb useage, so you see why I felt there's a discrepency (7.6x2=15.2)  Something that was not explained in the link was the manufactures also allow for a certian percentage of blocks for "reallocation", thus reducing actual useage space. Anyway, yes it's a"marketing" ploy and should be advertised in 'actual" and not 'assumed" Gb useage. BTW...any ideas about how to repair 'lost root designation"?

Stay Sharp:
Rick

Newbie
Posts: 4
Registered: ‎02-11-2015

Re: repair corrupted pendrive

Rixter, If it were me, I would use Recuva from Piriform. It is a free product that only wants to install Google Chrome as a browser that you can decline through the installation options. This product will try and allow you to salvage the data from your drive (TO ANOTHER DRIVE!). After salvaging the data you can then reconfigure (format) the drive. Recuva will allow you to select the drive even without a drive letter.

Newbie
Posts: 14
Registered: ‎03-20-2015

Re: repair corrupted pendrive

to KyZIX

 

     I've tried Boot-Repair, Gparted, disk utility, and MSWin to try to "format the drive. I've tried to write all zero's to it. I've tried DBAN DoD erasure....none of which worked. The problem is "lost boot designation". I need to repai/rebulid that before I can do anything with the drive. I can "read" the disk, cannot write to it, I know what's on the disk, but it's not all that important.(LM17.1 rebecca). I just want/need to get the disk back into service. Funny, I've googled/binged that (lost boot designation) and am getting very little/next to nothing about it????. Are there Sandisk "techs" I can dispose at this sight? Perhaps this is a detail they may be able to help with. And please, I mean no offence to you or anyone who has tried to help. It's just that noone seems to know what I'm talking about.

Stay Sharp:

Rick

SanDisk Guru
Posts: 2,378
Registered: ‎07-23-2010

Re: repair corrupted pendrive

I can "read" the disk, cannot write to it,

 

Read only mode is a known problem and the only solution is to return the drive for a free replacement.  There is no fix for it.

Ed
Important files = Backed up files
Newbie
Posts: 14
Registered: ‎03-20-2015

Re: repair corrupted pendrive

I'm going to ask:

 

   IS THERE A WAY TO FORCE MOUNT  THIS PENDRIVE? I use a linux O.S. and when running dmseg, I get "buffer I/O error" . But what's so puzzling is, when plugged in MSWin,  I check the drive and get "healthy partiton" "drive OK" even though it won't mount???? I know...with the price of flashdrives these days why even mess with???? Because I like to fix things...if possible! And, does this site offer any advice/help from their 'techs"? If so, how do I contact them?

THANX:

Rick