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I have formatted Canyon CN-MP4A USB flash drive with Disk Utility on Mac and now it is not recognized on any Mac or Windows machine. I have formatted with Disk Utility > drive > Erease > Format > MS-DOS (FAT). Now when I plug it in any Mac or Windows machine, nothing happens. Like nothing is plugged in. It has a screen, and I was able to format it directly from the device before, but now when I turn it on, welcome screen appears, but nothing else. I can not get to the menu.

Is there a way I can format it?

I am looking for the answer on the internet, but no luck so far.

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For all the discussion, its probably dead. Try GParted as last resort. Google it if you don't know what it is. – tumchaaditya Jan 3 '14 at 23:44

With the flash drive inserted, in Windows, click Control Panel >> Administrative tools >> Computer Management >> Disk Management. Delete any partitions on the flash drive and create a new one. I suggest using NTFS on it. You probably will have to format it as well as creating the partition.

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Thanks for the reply, but I can not see the flash drive in Disk Management (just HDD and DVD). – Željko Filipin Oct 25 '10 at 12:53
Your drive's hardware is borked. You should return it, if it's under warranty. – CarlF Oct 25 '10 at 13:23
It is old drive, no warranty. :) It could be that something is broken, but I do not think so, because it was working just fine until I formatted it on Mac. Do you think Mac broke something? – Željko Filipin Oct 25 '10 at 14:38
I think it's a coincidence. – CarlF Oct 25 '10 at 16:39
In the last few months my Mac broke at least 2-3 USB drives, so I do not think it is a coincidence. – Željko Filipin May 30 '11 at 19:50

It may have just failed, as flash drives sometimes do. But you could try to load it with a linux live disc, which may be able to cope with a few things the Mac and Windows cannot (other filesystem types for sure, corruption, not so sure). A fried USB stick will not work there either though. I had a Sony Walkman that ran fine on windows and linux, and OK with mac but the mac would never eject/unmount/safe-remove the filesystem properly. After 3 months it was killt (killed/dead).

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I had the same problem and found a solution. This post might be a little bit late but perhaps it will help someone else.

  1. Format your USB drive to a partition in free space in your Mac.
  2. Connect the USB stick to your PC.
  3. Right click on the disk image and go to Properties.
  4. Go to Sharing and hit Advanced Sharing.
  5. Select "Share this folder" and close.

When you open Computer Management >> Disk management it should read the USB stick as an unallocated partition and you can now partition the drive.

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Did you notice that neither Windows or Mac machines see the USB drive when I plug it in? I can not do anything. – Željko Filipin May 30 '11 at 19:51

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