Some time ago I used a 4GB USB drive to install Linux on, but I have a new USB drive and decided to use the old one for Windows Vista Readyboost. I used UNetbootin to install Linux and it made the USB drive bootable. Even though I have already formatted it (FAT32) the computer still gives this error if the USB drive is plugged in before Windows begins booting:
Remove disks or other media.
Press any key to restart
Grab an Ubuntu LiveCD and go into System->Administration->Partition Editor (Or GParted, depending). Go into the top-right drop box and find your drive (easiest way is using the drive size) and look at its partition, right click on it and choose Manage Flags (or as close to it as possible) and uncheck the boot flag. Click Apply. Reboot.
Could you just reformat the disk?
I would give detailed instructions if I knew what operating system you were on.
