How to know Proxmox VE 6.was installed using grub or systemd-boot as bootloader ?

[mfgamma]

Hi

well title is a good summary of the question: How to know Proxmox VE 6.3 was installed using grub or systemd-boot as bootloader ?

thanks

 

[Stoiko Ivanov]

Currently the installer uses 'systemd-boot' on systems:
* booted with UEFI (systemd-boot only supports UEFI) and
* ZFS

The preparations for systemd-boot are made when you install on ZFS, but if the system is booted in legacy BIOS mode grub is used.

for LVM (a.k.a. ext4, xfs) installs grub is used in all cases

I hope this helps!

 

[leesteken]

If the directory /sys/firmware/efi/efivars exists, then your systems booted with UEFI.
If the command zfs get all / return a list of lines about something like rpool/ROOT/pve-1, you are running Proxmox from a ZFS file system.
According to the post above, if both are the case, you will have booted with systemd-boot (which has a different looking boot-menu than GRUB).

You can also use cat /proc/cmdline and see if it matches grep 'CMDLINE_LINUX=' /etc/default/grub (GRUB) or it matches cat /etc/kernel/cmdline (systemd-boot).

 

[aaron]

Allow me to drop a hint to the Admin guide [0] section 3.11.2

[0] https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot_determine_bootloader_used

 

[mfgamma]

Hi

yes very clear

thanks