[SOLVED] After removing 1 cpu from dual sockets, Promox unable to boot up

[nasirguan]

My server has dual sockets, but one of cpu have error. After we removed the cpu from that sockets, the proxmox stuck at loading initial ramdisk.
I tried remove the `quite` in grub menu, no other details shown.
I also tried using rescue disk, but it stuck at `LVM Rescue Boot`.

Anything i miss to bring up the proxmox os?
My server details

Dell PowerEdge R7525 Rack Server
Processor: 2 x AMD EPYC 7542 (32C/64T)
Memory: 16 x 64GB RAM
Network card : 4port 1G + 2port 10G
RAID Controller: PERC H745 Adapter FH

 

[wahmed]

In a multi socket motherboards, the sockets are usually in sequence such as socket 0, socket 1 etc.
If you removed the CPU from socket 0 instead 1, that may cause the issue.
Also you may have to rebuild the initramsfs after CPU removal:
1. chroot into your server:

mount /dev/mapper/<root-volume> /mnt
mount --bind /dev /mnt/dev
mount --bind /proc /mnt/proc
mount --bind /sys /mnt/sys
chroot /mnt

2. Rebuilt initramfs

update-initramfs -u -k all

3. Update grub and reboot:

update-grub

 

[nasirguan]

Thanks @wahmed will tried if i am able to run the rescue mode. I failed to boot any OS for the moment (even with proxmox iso)
I am trying to get cpu replacement first. Seems to be hardware issue.

 

[nasirguan]

will keep this closed first. update once i get the hardware vendor reply