Thanks for the reply and sorry for the delay.
I'm not sure exactly what commands I'm supposed to try.
This is what I did:
dd if=/dev/zero of=/dev/sda1
dd: writing to `/dev/sda1': No space left on device
1697+0 records in
1696+0 records out
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
You must set cylinders.
You can do this from the extra functions menu.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Do flash drives use cylinders??
If looked on the specs page for the device on the web, but it does not say anything about cylinders.
How do I proceed from here?