Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have this brand new flash drive "geek squad" brand that is unusable, I've tried to format it on windows and mac without luck (I just cannot do it neither using the terminal nor via GUI) so I was trying to use a low level formating tool but it won't appear there to be formatted, any other ideas? besides going and try to get my money back.


I noticed it has some sort of U3 program installed, don't know how that might help

share|improve this question
up vote 4 down vote accepted

I managed to format a belligerent partition on a friend's flash drive. Normal methods would not work because as far as the (Windows) OS knew, it was an unwritable CDFS CD-ROM partition:

These tools allowed me to remove the CDFS partition:

  1. USBDeview to see flash vendor ID, this can be found
  2. If your flash is SMI chip, you need SMI UFD utility, which can be found
  3. If your flash is USBEST chip, you need UCDexec.exe, which is

Here is little forum about it

share|improve this answer

That's what you get for buying anything associated with The Geek Squad. My advice is to return it for a new one or a refund.

If you bought a new car and it had problems, would you try to fix it yourself or would you take it back to the dealer?

share|improve this answer

Might just be a bad one if you can't get it to format with Disk Utility on Mac. Also see if you can rewrite the master boot record for it.

share|improve this answer
how can I see that? – Proxify Oct 27 '10 at 6:17
Open disk utility, see if the drive even shows up on the left. If it does, click on it, and look in the right pane for a Partition tab. That's all I can remember from memory. Good luck. – wag2639 Oct 27 '10 at 7:02

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .