While reinstalling a server and moving it to Debian, I ran into the problem that I need to sync the EFI partitions. The system is using a RAID on two disks, but the EFI partitions can't be a RAID and need to exist on both disks. Or rather it is useful to have the EFI partition on every disk: if one disk fails, the system can boot from the other disk. grub only installs the necessary files on one partition. However one can use a script as grub hook, and sync all partitions. This script needs to determine if a device is already mounted somewhere, or needs to be mounted. Turns out there is a little and not well-known tool for this.
Posted by ads' corner on Friday, July 26, 2024
Moving my systems away from Ubuntu, I also have to reinstall a server at home. This system has two equal disks for a RAID system, and my plan is to install Debian on it. Turns out, setting up a Software RAID on Debian and booting from EFI is not a straightforward approach. This blog posting describes the steps.
Posted by ads' corner on Friday, July 19, 2024
From time to time our laptops receive firmware updates, by using the Linux Vendor Firmware Service (short: fwupd). This worked fine for a long time, until it didn't. One day I was facing an error message.
Posted by ads' corner on Tuesday, April 4, 2023