Recreate Partition of Flash Drive
I've been messing around with Mac emulation on my PC and decided to reformat my Flash drive as a Mac formatted disk. Now, even when I format it to MS-DOS on the mac its unreadable on my PC (running XP Pro). How can I reformat the drive in Windows so its usable again?
Thanks for all the help guys. I tried it at work and the computer here recognized the flash drive as a RAW formatted disc and let me format it. Since it is also running XP Pro I don't understant why it would work here and not at home. Hmm... maybe it has special capabilities since its a government computer. j/k
It could be the USB subsystem. Not all USB shipset and drivers behave the same, and USB implementation is still buggy in Windows, in SP2 also.
In case of trouble with USB flash devices I always resolved with my Gentoo Linux machine: a well configured linux box with 2.6 kernel is able to reformat and recover any USB flash drive (if it still powers up!)
Give this a go:
Download and burn a Linux livecd of your choice (so long as it has USB support, most do)
When it's up open a terminal
Plug in the USB drive
Look for the line about a USB device, likely will be named something like [b]/dev/sdX[/b] where X is a,b,c,... make a note of the name
Enter the following command:[code:1:3bf44e4e95]//assuming it's sda
//first, we verify the structure of what's in the partition table
fdisk -l /dev/sda[enter]
//make sure this looks reasonable, i.e. says something about HFS+
//If you feel comfortable with fdisk or can follow basic instructions,
//to delete [d] the partition (get the
//partition # w/ [p]), and either leave it blank and let
//Windows reformat it or do it here. read the man page or other sites.
//Even if you just delete the partition, make sure to end with [w]
//In review, to delete,
p[enter]//take not of the partition #'s
//(if other partitions exist, repeat with [d]  [d]  etc.)
//if you get stuck at any point, you can exit with a [Ctrl+c]
//If you'd rather not use fdisk, this will also prep it for Windows to reformat
dd if=/dev/zero of=/dev/sda[enter]
//This will take some time.[/code:1:3bf44e4e95]
if you didn't format it in Linux, search how to format in Windows (Control Panel->Admin Tools->Computer Mgt->Disk Mgt)
Hope this helps.
Did you try looking at it from the computer management console? Sometimes (always?) when windows sees a disk with an unknown partition, it won't assign it a drive letter. You are, however, able to see it in the disk management part of the computer management console. You are also able to reformat and assign a drive letter as well.
If it isn't seen in the computer management, it is probably a hardware issue. Possibly something in the usb subsystem, as has been mentioned.