I recently did this on an up-to-date F28 system:
$ sudo dnf system-upgrade download --refresh \
--releasever=29 --allowerasing --best
$ sudo dnf system-upgrade reboot
Now system will not boot.
I had to boot from a live usb stick and do:
$ sudo su -
# vgdisplay
# vgchange -ay fedora
# mount /dev/fedora/root /mnt
# mount /dev/sdb2 /mnt/boot
# mount /dev/sdb1 /mnt/boot/efi
# mount --bind /proc /mnt/proc
# mount --bind /tmp /mnt/tmp
# chroot /mnt
# dnf --disablerepo=updates-testing upgrade grub2-efi shim
None of this was obvious to me at first. I got here only after a lot
of searching the Web for answers. It seems that grub2-install won't
work on my setup, even after disabling secure boot on this machine.
What am I doing wrong here that I cannot boot after a system-upgrade?
$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 91M 7.7G 2% /dev/shm
tmpfs 7.8G 1.2M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/fedora-root 50G 11G 36G 24% /
tmpfs 7.8G 64K 7.8G 1% /tmp
/dev/sdb2 976M 287M 623M 32% /boot
/dev/sdb1 200M 7.9M 192M 4% /boot/efi
/dev/mapper/fedora-home 412G 12G 379G 3% /home
tmpfs 1.6G 44K 1.6G 1% /run/user/1000
--
Garry T. Williams
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