Hi all, I’ll start with some background.
I have a Dell r710 with Centos7 installed on 2x 73gb drives in RAID1 on a Perc6i.
I have setup software and configured it for a specific purpose.
I now want to replace the storage with a RAID6 array of 6 drives.
As the server only has 6 drive bays I wanted to image the original array and restore it to the new one after swapping out the drives and configuring the new array.
I have tried both clonezilla and rescuezilla to image the original array to a usb drive and restore to the new array and both have failed to boot with just a grub> prompt.
I followed this guide linuxsysadmins(dot)com/grub-rescue-in-centos-and-rhel-7/ to try and repair grub using CentOS7 on a usb but still no luck.
I now get grub rescue> instead of just grub>, the error says disk`,gpt2’ not found
I found this page dennisk(dot)freeshell(dot)org/cis238dl_grub that says to run insmod lvm but that also gives me the “error: disk `,gpt2’ not found” error.
At this point I cant find much on google that is relevant, clearly “,gpt2” is very wrong but I’m not sure how to proceed.
Alternatively is there a better way to image and then restore that works with RAID, LVM and UEFI? , I can still replace the two original drives and import the RAID1 array and get back to a working system to try again.