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Recover data from USB flash with "RAW" system


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#1 GoldenLee

GoldenLee

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Posted 18 March 2014 - 08:18 AM

Hello, everyone!

 

When my 8GB USB flash is plugged into one of an available USB port, a message box will be brought up with the following information:
"You need to format the disk in drive I: before you can use it."

When I issue chkdsk /f i: in MS-DOS box, it dispalys:
The type of the file system is RAW.
CHKDSK is not available for RAW drives.

I used testdisk_win.exe to check it.

TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sdb - 8021 MB / 7650 MiB - CHS 975 255 63

     Partition                  Start        End    Size in sectors

No partition found or selected for recovery

 

As you may see, testDisk couldn't find the partition.

I choose "Analyse", and press "Enter" key, it shows the message
"Partition sector doesn't have the endmark 0xAA55"

The ">[Quick Search" was hilighted at the left bottom of the screen. So, I hit "Enter" to have testDisk to search.

After a while, testDisk found no partition, and showed me 3 options at the bottom of the screen as follows:
Keys A: add partition, L: load backup, Enter: to continue

Firstly, I press "Enter" to continue, it displays:
"No partition found or selected for recovery"
and highlighted the "[Deeper Search]" menu item

I press "Enter" again, to try to find more partition.

After wait for a longer time of period than quick search, it shows the following menu options again:
Keys A: add partition, L: load backup, Enter: to continue

Secondly, I selected "L" to load backup, but it said no backup to load.

and Finally, there is only one option I can select, that is "A: add partition". I think it is a dangerous choice. Thus, I don't want to take a risk of losing my precious data.
What can I do next? Would you please provide soem feasible solution to me?

Thank you very much!
GoldenLee



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#2 JohnC_21

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Posted 18 March 2014 - 09:55 AM

Because the Flash Drive is RAW the only option is to use recovery software. RhotoRec is software that can do the job. Please note that the recovered files should not be saved back to the flash drive as all files will be lost. Also, any file recovered will have generic file names. The Video says Testdisk but it shows the use of Photorec. Do not format the drive as shown in the video.

 






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