USB Thumb drives

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ErikJan
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USB Thumb drives

Post by ErikJan »

I have three (old) USB2 thumb drives. I tried to wipe/zero and then format them.
They look completely identical, let's call them A, B and C. They show up in Explorer with capacities of (all FAT)
A: 978Mb
B: 975MB
C: 1800MB

In write tests A and B show about the same performance but C is twice as slow. There's one partition on all three as far as I can see.
I think I know C had a boot image loaded one day.
I used tools like USBDeview (NirSoft) and USBDriveInfo (Uwe Sieber) but didn't see anything different really except for the size.
Why are A & B a little bit different in size and why is C double the size? I know C could just be double the size but the sticks all have the same unique print on them and look identical (which makes me think they would be identical). I have the feeling that maybe also A and B are 2Gb (1800MB formatted) and somehow I don't see that (and I'm not able to reset that). Also the fact that the larger (C) is about 2 times slower than the smaller ones (A&B) is weird (maybe).
Suggestions? Are there tools that reset all (wiping is OK) or that read the real capacity?

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John Gray
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Re: USB Thumb drives

Post by John Gray »

Perhaps have a look through one of the collections of USB utilities, like this one from OlderGeeks.

USB Disk Storage Format Tool and USB Repair (for example) might be worth a look?

There is also an old HP utility (HP USB Disk Storage Format Tool) which completely clears a USB Flash Drive, which you can find at the website of your choice.
John Gray

Think how stupid the average person is, then realise that half of the population are stupider than that.

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ErikJan
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Joined: 03 Feb 2010, 19:59
Location: Terneuzen, the Netherlands

Re: USB Thumb drives

Post by ErikJan »

Thanks John, already looked @ OlderGeeks. Couldn't find anything there.
Wiping/clearing is no a problem, question is what is cleared: if a tool reads the wrong capacity...