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Andrew N. Kowtalo

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256gb thumb drive detected as 32gig.

I have a PNY 256GB USB thumb drive.  All of a sudden when inserting the thumb drive into my machine it is only showing the size to be 31.9 gig.   I have quick formatted the disk in hopes to wipe out the partition it is unable to read with no luck.   Has anyone had this happen to them in the past and know how to restore a missing partition?

Originally when I got the thumb drive it showed as 256gb I do not know what changed.
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Polydore Dracopoulos
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do you have a Linux or MacOS machine you can check the drive with?
if so, you may see the hidden partition and delete it.  

you can also try diskpart application from windows.  it's command driven but pretty powerful, just be careful not to wipe the wrong disk.

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/diskpart
Avatar of Andrew N. Kowtalo
Andrew N. Kowtalo

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Unfortunately I only have my Windows 10 work laptop.    I will try the 3rd party app and see how it goes.
So I was able to run DISKPART delete and recreate the partition on the disk however now its showing up as an unknown device and not allowing me to format it.
here's how windows is seeing it.
2019-04-03_13-40-01.jpg
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Andrew N. Kowtalo

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Happy it worked.