I have an old XW8000 machine that I’ve been trying and failing boot from USB for the last week.
I’ve tried burning Ubuntu 6.0, 8.0, 14.0, 22.04 on USB media using PowerIso and BalenaEtcher and the usb is just not being booted from on the machine. I thought maybe it was the type of file system so I changed from FAT, FAT32, NTFS. Didn’t work.
So then I burned the .iso to cd drive and system booted right up. I went to BIOS and looked at every option to allow boot from USB and tried enabling it, still nothing.
I even tried pressing F8 on boot up and manually forcing the computer to boot from removable media- still nothing.