It looks like you are using legacy bios. mine is using uefi with a zfs rpool
proxmox-boot-tool status
Re-executing '/usr/sbin/proxmox-boot-tool' in new private mount namespace..
System currently booted with uefi
31FA-87E2 is configured with: uefi (versions: 6.5.11-8-pve, 6.5.13-5-pve)
However, like with everything a method always exists to get it done. Or not if you are concerned.
If you are interested it would look like...
Pool Upgrade
sudo zpool upgrade <pool_name>
Confirm Upgrade
sudo zpool status
Refresh boot config
sudo pveboot-tool refresh
Confirm Boot configuration
cat /boot/grub/grub.cfg
You are looking for directives like this to see if they are indeed pointing at your existing rpool
root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet
here is my file if it helps you compare...
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/000_proxmox_boot_header ###
#
# This system is booted via proxmox-boot-tool! The grub-config used when
# booting from the disks configured with proxmox-boot-tool resides on the vfat
# partitions with UUIDs listed in /etc/kernel/proxmox-boot-uuids.
# /boot/grub/grub.cfg is NOT read when booting from those disk!
### END /etc/grub.d/000_proxmox_boot_header ###
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if loadfont unicode ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Proxmox VE GNU/Linux' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-/dev/sdc3' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_gpt
echo 'Loading Linux 6.5.13-5-pve ...'
linux /ROOT/pve-1@/boot/vmlinuz-6.5.13-5-pve root=ZFS=/ROOT/pve-1 ro root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet
echo 'Loading initial ramdisk ...'
initrd /ROOT/pve-1@/boot/initrd.img-6.5.13-5-pve
}
submenu 'Advanced options for Proxmox VE GNU/Linux' $menuentry_id_option 'gnulinux-advanced-/dev/sdc3' {
menuentry 'Proxmox VE GNU/Linux, with Linux 6.5.13-5-pve' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.13-5-pve-advanced-/dev/sdc3' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_gpt
echo 'Loading Linux 6.5.13-5-pve ...'
linux /ROOT/pve-1@/boot/vmlinuz-6.5.13-5-pve root=ZFS=/ROOT/pve-1 ro root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet
echo 'Loading initial ramdisk ...'
initrd /ROOT/pve-1@/boot/initrd.img-6.5.13-5-pve
}
menuentry 'Proxmox VE GNU/Linux, with Linux 6.5.13-5-pve (recovery mode)' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.13-5-pve-recovery-/dev/sdc3' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_gpt
echo 'Loading Linux 6.5.13-5-pve ...'
linux /ROOT/pve-1@/boot/vmlinuz-6.5.13-5-pve root=ZFS=/ROOT/pve-1 ro single root=ZFS=rpool/ROOT/pve-1 boot=zfs
echo 'Loading initial ramdisk ...'
initrd /ROOT/pve-1@/boot/initrd.img-6.5.13-5-pve
}
menuentry 'Proxmox VE GNU/Linux, with Linux 6.5.11-8-pve' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.11-8-pve-advanced-/dev/sdc3' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_gpt
echo 'Loading Linux 6.5.11-8-pve ...'
linux /ROOT/pve-1@/boot/vmlinuz-6.5.11-8-pve root=ZFS=/ROOT/pve-1 ro root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet
echo 'Loading initial ramdisk ...'
initrd /ROOT/pve-1@/boot/initrd.img-6.5.11-8-pve
}
menuentry 'Proxmox VE GNU/Linux, with Linux 6.5.11-8-pve (recovery mode)' --class proxmox --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.5.11-8-pve-recovery-/dev/sdc3' {
load_video
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_gpt
echo 'Loading Linux 6.5.11-8-pve ...'
linux /ROOT/pve-1@/boot/vmlinuz-6.5.11-8-pve root=ZFS=/ROOT/pve-1 ro single root=ZFS=rpool/ROOT/pve-1 boot=zfs
echo 'Loading initial ramdisk ...'
initrd /ROOT/pve-1@/boot/initrd.img-6.5.11-8-pve
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###
You can see the lines by the linux sections.