I have a problem with already 2nd USB drives, most probably due to the reason of choosing slow formatting option. Because it takes a LOT of time, I probably forget about it and accidentally break the formatting process. Now I have 2 completely useless USB drives.
Ubuntu can't read them, actually, Disks application recognize them, but there are very few options offered: "Edit Mount Options", "Eject" and "Power Off". Gparted doesn't recognize it, as well as testdrive and fsck ("No medium found while trying to open /dev/sdc").
I suppose that drivers for recognizing USB drive are corrupted or maybe there is some bad sector in an important part of the memory. I hope there is a way to make this 2 USB drives alive again.
I know how this will sound, but...I also break slow HDD partition formatting after 12 hours (accidentally), and I didn't have any problem. So there is my hope that it is possible to fix USB drives.