How do I reformat an unrecognized flash drive?

Solution 1:

I got a usb flash drive which was unrecognized by my pc. I followed following steps to make it recognized.

1. Right click on Computer icon in desktop.
2. Go for manage
3. In that option use disk management. You can see available disk in your pc. Your flash drive is seen in that as "disk 1" (note disk 0 is your primary harddrive)
4. Change the drive letter if possible.
5. If you cant right click and use "delete drive" option.
6. Then you can see that Drive as "UNALLOTED"
7. Right click on it and go for "New simple Volume"
8. Follow the wizard as it instructed. It requires formatting.
9. Now it is your Flash Drive Flashing on your desktop.

Enjoy. All the best.

Solution 2:

You can try to use DISKPART utility in Windows 7.

When you enter that utility, first write LIST DISK. That will give you list of all recognized drives including USB. Remember number (e.g. 9). Than you can execute

SELECT DISK 9
CLEAN
CREATE PARTITION PRIMARY
FORMAT FS=FAT32 QUICK

That should give you clean slate.

P.S. Do be careful to select correct disk number. If you select wrong number, you will format wrong disk.