On 9/11/20 11:23 AM, 'ktono' via qubes-users wrote:

Hi,

I haven't tried switching. One of the slots is under some CPU cooler fans, and I don't have the stuff to remove/deal with that at the moment.

I believe I'm using direct EFI. The first SSD, where I have all my original data, under `fdisk -l` shows one of the devices
having the "EFI System" type.

My old drive has name nvme1n1, and it has a UUID with "c04b", which matches what is under "rd.luks.uuid" in xen.cfg under EFI/qubes when I mount the "EFI System" device.

The newer drive has name nvme0n1, and it has UUID with "fe3d". This newer disk shows up in the dracut shell when I do `blkid`, but the older one is missing
On Friday, 11 September 2020 at 01:43:02 UTC-7 donoban wrote:

    On 2020-09-11 07:26, ktono via qubes-users wrote:
     > I have a Qubes 4.0.3 setup that uses an NVMe SSD for storage and
    boots using UEFI. My motherboard has 2 NVMe slots, so I still had
    one free slot. Everything worked fine on Qubes.
     >
     > Then, I decided to install a second NVMe SSD (the same model).
    After doing that, booting Qubes only puts me into Dracut Emergency
    Shell.
     >
     > The error messages I get:
     >
     > ```
     > So I think Qubes is trying to boot with the new, empty SSD or
    something like that.
     >
    Hi,

    Have you tried switching the hard disks slots? Are you using direct EFI
    or GRUB?


     > When I use a Qubes USB installer to get a shell, I can still find my
    old SSD. When I do `cryptsetup open /dev/nvme<...>` on my old SSD, I
    can
    then `fdisk -l` to find the names of all my AppVMs, etc., so it's not
    like the space was wiped.


    What numbers has your old disk assigned? Theorically the boot hard disk
    uuid is passed as kernel argument: "rd.luks.uuid=......" So a change
    with major/minor numbers should not affect.


If you are using EFI to boot the system, check in the bios which disk that efi is defaulting to. It is odd that your original disk has the
"1n1" numbering and the new disk is "0n1".  That may have confused the
efi boot ordering.

Mike.

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