I've also used different kind of software to format my flash drive but it did'nt work. Right now i have a bigger problem, i partition the flash drive and format it to FAT32 and in the processing of formatting the flash drive the result is unformatted. Then after on that problem, i check the flash drive to my computer, the driver of a flash drive is gone but if i detect it to my software that i been using, it was detected. i used "HP utility for formatting USB flash drives" software. . Is there any other solutions to format my SONY Micro-Vault 8Gigabytes Flash drive?