crwdns2934241:0crwdne2934241:0 Sergey

crwdns2934249:0crwdne2934249:0:

You can try using something more powerful than <Put int your OS> stock format tool. I would recommend  GParted - you will be able to see if there are partitions, verify, delete, reformat, etc. If that will not help, most likely you will end up throwing that usb away.

crwdns2915684:0crwdne2915684:0:

open