Re: NVMe questions

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On Sat, 2024-07-27 at 20:04 -0400, Go Canes wrote:
> On Sat, Jul 27, 2024 at 4:36 PM Patrick O'Callaghan
> <pocallaghan@xxxxxxxxx> wrote:
> > However none of the UUIDs seen by efibootmgr correspond to anything
> > on
> > any of the drives.
> 
> Re-read my reply.  Both of the efibootmgr variables *do* correspond
> to
> existing UUIDs.
> 
> > > Can you disable the SSD in "BIOS"?
> > Yes, but the NVMe drive doesn't appear as a boot option. Removable
> > USB
> > drives, DVD etc. do appear (and are grayed out) but not the NVMe.
> 
> I wonder if your BIOS supports booting off of NVMe....
> > I guess I could boot Live USB if all else fails, but I'm not sure
> > what
> > good that would do.
> If you can boot off of live media or the rescue option from install
> media, you can mount and "chroot" into the new disk and then run
> grub2-mkconfig and/or dracut as needed.
> 
> > I'll also try updating the BIOS firmware, just in case.
> I'm starting to think your root issue *is* BIOS related.  You should
> go through all the available options:
> - make sure the NVMe is enabled - seems that it is since you *can*
> "see" it

It is enabled. When the BIOS shows "storage", the NVMe drive is
present.

> - make sure the NVMe is set for AHCI and not RAID - again this
> doesn't
> *seem* to be the problem, but can't hurt to confirm

It is set to AHCI.

> - make sure the BIOS says the NVMe is bootable.  On one of my non-EFI
> systems I sometimes have to explicitly add USB thumb drives to the
> list of bootable disks.
> 

It doesn't say it's bootable. This is the basic problem. It doesn't
show in the list of bootable drives and there doesn't appear to be a
way to make it show, even though it does appear in the list of storage
devices. I find it hard to believe that a motherboard (or BIOS)
manufactured less than a year ago can't boot from an NVMe drive. What
if I don't have an SSD or SATA drive? This makes no sense.

> Another thought - I have heard some systems don't like having more
> than 1 EFI partition across multiple disks.  Maybe this is the case?
> The system scans the disks, looks at the SSD first, finds *the* EFI
> partition and never looks any farther?  If this is the case,
> disabling
> the SSD would allow it to find the NVMe.  Consider it a shot in the
> dark.

I tried disabling the SSD (in the bootable drives list). It made no
difference.

poc
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