Did you change any BIOS settings, not just the boot device?
Type: Posts; User: TheFu; Keyword(s):
Did you change any BIOS settings, not just the boot device?
If you see grub, you've gone too far. That's well after the BIOS. You'll need to look into your Dell's service manual for how to get into the BIOS. IME, that is usually banging on the F2 or F10 or...
You need to go into the BIOS and disable RST. I think the only answer that works for Linux is AHCI ... unless you want to fight with special storage drivers. I don't. Just choose AHCI and start...