so i have a ga-ma790ftx-ud5p motherboard. i boot unraid from it just fine with an old 2gb UFD. recently i was experimenting with another UFD but it wont boot from it. other machines boot from it just fine. after some headaches, i realized it wasnt any sort of partitioning problem. for whatever reason, that flash drive doesnt even show up in the bios. i have another identical UFD and sam thing with that one. any idea why the bios would register one flash drive but not others?

so i have a ga-ma790ftx-ud5p motherboard. i boot unraid from it just fine with an old 2gb UFD. recently i was experimenting with another UFD but it wont boot from it. other machines boot from it just fine. after some headaches, i realized it was any sort of partitioning problem. for whatever reason, that flash drive doesnt even show up in the bios. i have another identical UFD and sam thing with that one. any idea why the bios would register one flash drive but not others?

 

First guess would be as to how the Flash drive is formatted--- FAT, FAT32, NTFS, EXT, ect.  Many BIOS do not recognize every format scheme.

realized i made a typo. i doubt its a partitioning problem because the drive doesn't even show up in the list of devices in the bios.

I agree with Frank, it's probably a formatting issue.  I had a gigabyte mobo that wouldn't show a Fat32 formatted drive, but would display it when it was Fat formatted.