Cruzer 64GB shows up RAW, testdisk finds no partition

How to use TestDisk to recover lost partition
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WatercoolerWarrio5r
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Joined: 27 Feb 2015, 15:09

Cruzer 64GB shows up RAW, testdisk finds no partition

#1 Post by WatercoolerWarrio5r » 27 Feb 2015, 16:58

I have a SanDisk Cruzer Glide 64GB (SDCZ60-064G) thumb drive which has been used on a Mac for a couple of months. It recently stopped appearing in the Mac, and when checked on a PC, it shows up as a raw partition. I'm now attempting to recover the contents for the owner.

I've done some basic troubleshooting on it. It does show up consistently when plugged in to an external powered USB hub, but I had some issues with it when plugged in to an onboard USB port - which does point to a possible hardware issue.

When I run TestDisk, it is accurately identified

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Drive D: - 64 GB / 59 GiB - SanDisk Cruzer Glide
     125031648 sectors - sector size=512
However, no partitions ever show up. I've tried analyzing it as an Intel drive since it would have been FAT32, but I get continual read errors - sample from the beginning shown below:

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search_part()
Drive D: - 64 GB / 59 GiB - CHS 125031648 1 1
file_win32_pread(348,1,buffer,19(19/0/1)) read err: read after end of file
file_win32_pread(348,1,buffer,66(66/0/1)) read err: read after end of file
file_win32_pread(348,8,buffer,80(80/0/1)) read err: read after end of file
file_win32_pread(348,1,buffer,137(137/0/1)) read err: read after end of file
I'm leaning towards an actual hardware problem, controller and not media, but wanted to see what other people suggest. In particular, is it possible that running a deep search will do any good?

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cgrenier
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Re: Cruzer 64GB shows up RAW, testdisk finds no partition

#2 Post by cgrenier » 28 Feb 2015, 09:25

If TestDisk see a PhysicalDrive, use it instead of D:
Choose Advanced, Boot, RebuildBS, List. If you see your files, choose Write and confirm.

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