Test results for my HP 860-180st system. BIOS is THI vA0.47, dated 12/6/2016.
ESC, wait, then F10 at boot to get to the BIOS setup
Disable Secure Boot, Enable Legacy boot, save & exit (reboots)
ESC, wait, then F10 at boot to get to the BIOS setup again
Change Boot order to Disable UEFI boot and make sure USB is first in the list of Legacy boot order
Also tested to Legacy boot spinrite from ATAPI/CDROM successfully.
HTH
Peter
ESC, wait, then F10 at boot to get to the BIOS setup
Disable Secure Boot, Enable Legacy boot, save & exit (reboots)
ESC, wait, then F10 at boot to get to the BIOS setup again
Change Boot order to Disable UEFI boot and make sure USB is first in the list of Legacy boot order
Also tested to Legacy boot spinrite from ATAPI/CDROM successfully.
HTH
Peter
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