At Tue, 29 May 2018 11:35:39 -0400 CentOS mailing list <centos at centos.org> wrote: > > Robert Heller wrote: > > At Tue, 29 May 2018 06:47:06 -0700 CentOS mailing list <centos at centos.org> > > wrote: > >> On 05/29/2018 06:33 AM, Robert Heller wrote: > >> > > >> >> The UUID in the EFI boot options is > >> >> 99E275E7-75A0-4B37-A2E6-C5385E600CB, which > >> >> does not to match anything, but the system is only happy booting the > >> >> old disk... > >> > And at this point, it will only boot in legacy mode off the old disk. > >> > >> That's what I meant, I think.'?'? Legacy mode is BIOS-compatible.'?'? If > >> you're booting in legacy mode, you can't access the UEFI variables. The > >> old disk probably has GRUB installed on the first block.'?'? It might be > >> booting in legacy mode *because* the UEFI boot option's UUID doesn't > >> match your partition. > > > > OK, I think at this point it is not wanting to even boot the old disk in > > EFI mode. Maybe because the old disk is no longer in SATA port 0 > (/dev/sda). > > It is not wanting to boot the new disk in EFI mode and won't boot from the > > Optical disk in EFI mode (at least I cannot figure out how to do that). > <snip> > Y'know, what you just wrote above... that makes it sound like you need to > go into the BIOS and reset the boot order. Tried that. Right now, the boot order lists all of the disks in *Legacy* boot mode. > > mark > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller at deepsoft.com -- Webhosting Services