Re: cubox-i does not boot after upgrade to bullseye
On Wednesday, December 29, 2021 1:39:18 PM EST Vagrant Cascadian wrote:
> On 2021-12-29, Rainer Dorsch wrote:
> > Am Montag, 27. Dezember 2021, 18:22:43 CET schrieb Vagrant Cascadian:
> >> If you can insert the microSD into another Debian machine, you can
> >> get
> >> the UUID by looking in /dev/disk/by-uuid/ to find the matching
> >> device
> >>
> >> or:
> >> lsblk --fs /dev/DEVICE
> >>
> >> It might be possible to discover from u-boot as well, but I forget off
> >> the top of my head.
> >
> > There is
> >
> > => part uuid mmc 1:2
> > 8ad3fb70-02
> > => part uuid mmc 1:3
> > 8ad3fb70-03
> > =>
> >
> > but "root=UUID=8ad3fb70-03" is not working for mounting the rootfs.
> >
> > In the bullseye installation, there is also a variable defined finduuid
> >
> > finduuid=part uuid mmc 0:1 uuid
> >
> > which is even called by bootcmd, but I am not sure if that is doing
> > anything useful.
>
> That *may* be a partition UUID, rather than a filesystem
> UUID... initramfs-tools 0.121 and newer supports using
> root=PARTUUID=...
>
> You can see the available partition uuids on linux in
> /dev/disk/by-partuuid/
>
Thank you very very much, vagrant. I've been wondering how those were
married, but a much more informative answer is from ls -l + the above path.
>From my 2 gig rpi4, serving as a buildbot, and heavily modified to move much
of the buildbot traffic off the u-sd:
pi@rpi4:~/linuxcnc/configs/sheldon-lathe $ ls -l /dev/disk/by-partuuid/
total 0
lrwxrwxrwx 1 root root 15 Oct 18 06:55 5e3da3da-01 -> ../../mmcblk0p1
lrwxrwxrwx 1 root root 15 Oct 18 06:55 5e3da3da-02 -> ../../mmcblk0p2
lrwxrwxrwx 1 root root 10 Oct 18 06:55 c2cbc1a6-01 -> ../../sda1
lrwxrwxrwx 1 root root 10 Oct 18 06:55 c2cbc1a6-02 -> ../../sda2
lrwxrwxrwx 1 root root 10 Oct 18 06:55 c2cbc1a6-03 -> ../../sda3
lrwxrwxrwx 1 root root 10 Oct 18 06:55 c2cbc1a6-04 -> ../../sda4
lrwxrwxrwx 1 root root 10 Oct 18 06:55 c61252a1-01 -> ../../sdb1
sda/sdb are SSD's on usb3-sata adapters
>
> live well,
You too,
> vagrant
Cheers, Gene Heskett.
--
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- Louis D. Brandeis
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