Somebody in the thread at some point said: > I have a USB with a livecd image written on it (using dd if livecd.iso > of /dev/sdc ). How to revert it to FAT or other file system? All you need to do to make it "normal" again is to write a partition table on /dev/sdc. # fdisk /dev/sdc Then "o" for empty partition table, add partion 1 with "n" using the flag you want (FAT16, ext3 or whatever). Then "w" to commit the table to the USB stick and exit. Pull the stick out and re-insert it to make sure the new partition table is understood by the kernel. Then # mkfs.vfat /dev/sdc1 or whatever to format your first partition. -Andy