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Windows 7: 16 GB Kingston Datatraveler USB thumb drive, only 49 MB Usable

20 May 2017   #1
Quadzilla

Windows 7 Proffessional 64-bit
 
 
16 GB Kingston Datatraveler USB thumb drive, only 49 MB Usable

Hello,
I just started having problems with my 16 GB Kingston Datatraveler USB thumb drive. The drive is around 4 years old and was working fine until yesterday when I transferred some videos to it (from my Windows 7 PC), right clicked the drive in Windows Explorer and clicked eject. I then plugged the drive into my Sony Blu-ray player hoping to play the videos but got an error from the player that the drive was unrecognized. When I plugged the USB drive back into my PC, it recognized it but only as a 49 meg drive. Disk management lists the drive as Disc 7, Removable, 14.46 GB, Online, with 3 partitions which are listed as (L 49 MB NTFS, Healthy (primary partition), the 2nd partition as 99 MB, Healthy (EFI system partition) with no drive letter and the 3rd partition as 14.32 GB unallocated. When I right clicked the unallocated space, the only clickable options I see are Properties and Help, all the others are grayed out and can't be clicked. I also changed the Removal Policy a couple of times but that didn't help.

I attached the same drive to my Windows 7 laptop and was having the same problems. I'm wondering what the problem might be and if there's any way to get this drive working again so I can access the unallocated space? I know thumb drives are inexpensive but I'd still like to be able to use this drive if I can. Thanks for any info you all can provide!


My System SpecsSystem Spec
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20 May 2017   #2
samuria

win 8 32 bit
 
 

Post a screenshot from disk Management so we can see
My System SpecsSystem Spec
20 May 2017   #3
Quadzilla

Windows 7 Proffessional 64-bit
 
 

here you go, thanks...


Attached Thumbnails
16 GB Kingston Datatraveler USB thumb drive, only 49 MB Usable-captureb.jpg  
My System SpecsSystem Spec
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20 May 2017   #4
samuria

win 8 32 bit
 
 

If you delete the efi parition can you create then failing that Use diskpart clean to wipe the drive then it should work
My System SpecsSystem Spec
20 May 2017   #5
mjf

Windows 7x64 Home Premium SP1
 
 

I have a couple of these and they are all formatted FAT32 and one partition. If you want it back to this state try
delete partitions as suggested to get a RAW drive then
https://kb.sandisk.com/app/answers/d...or-a-usb-drive
Note: you will lose any data on the flash drive.
I believe Windows only recognizes the first partition on a flash drive. Linux and Macs will recognize multiple partitions.
My System SpecsSystem Spec
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 16 GB Kingston Datatraveler USB thumb drive, only 49 MB Usable




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