I have been able to boot on a rescue kernel!
Linux localhost.localdomain 5.6.13-100.fc30.x86_64 #1 SMP Fri May 15 00:36:06 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
bootctl
systemd-boot not installed in ESP.
System:
Firmware: n/a (n/a)
Secure Boot: disabled
Setup Mode: user
TPM2 Support: yes
Boot into FW: supported
Current Boot Loader:
Product: n/a
Features: ✗ Boot counting
✗ Menu timeout control
✗ One-shot menu timeout control
✗ Default entry control
✗ One-shot entry control
✗ Support for XBOOTLDR partition
✗ Support for passing random seed to OS
✗ Boot loader sets ESP partition information
ESP: n/a
File: └─n/a
Is this normal ?
>
> Hello,
>
> On a dual boot machine (one fc32, and one fc34).
> after I upgraded the fc32 to fc34, I cannot boot on the new fc34.
> I get
> failed to mount /boot/efi
> /boot/efi is shared by both machines
>
> Here is the fstab of the fc34 machine
>
> #
> UUID=a5b809ae-61c2-4d67-b0f3-109e99faad39 / ext4 defaults 1 1
> UUID=B2EF-0CE4 /boot/efi vfat umask=0077,shortname=winnt 0 2
>
>
> The /boot/efi seem correct (it is currently mounted by the fc32).
>
> blkid |grep B2EF
> /dev/sdb1: UUID="B2EF-0CE4" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="0fe1d405-6683-456c-a306-140e882e322c"
> blkid |grep 9faad39
> /dev/sda6: LABEL="fedora_rescue" UUID="a5b809ae-61c2-4d67-b0f3-109e99faad39" BLOCK_SIZE="4096" TYPE="ext4" PARTLABEL="OS" PARTUUID="41b9d134-b477-4ef5-8602-15fdc482a51e"
>
> What should I do ?
> It seems that the installer create /boot/efi/EFI/fedora/grub.cfg
> with
> search --no-floppy --fs-uuid --set=dev a5b809ae-61c2-4d67-b0f3-109e99faad39
> set prefix=($dev)/boot/grub2
> export $prefix
> configfile $prefix/grub.cfg
>
> (I could not boot either)
> Then I run (from the fc32)
> grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg.new
>
> and used this file to boot (by renamed).
>
> But I still have the same issue.
>
> What to do?
> It seems that there is a similar issue inb
> https://unix.stackexchange.com/questions/646150/problem-with-double-fedora-installation-mount-boot-efi-unknown-filesystem-ty
>
> Thanks.
>
> ===========================================================================
> Patrick DUPRÉ | | email: pdupre@xxxxxxx
> Laboratoire interdisciplinaire Carnot de Bourgogne
> 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
> Tel: +33 (0)380395988 | | Room# D114A
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