Add memtest86+ to (U)EFI-Only Linux Environments

Maybe you have been in the need to use a memtester like memtest86+. Maybe to test Ram-Overclocking (like XMP/DOCP), stability (like „more than 2 sticks of ram on AMD AM5“), because you suspect a faulty stick, or just as burn-in-test. Maybe you also realized, that memtest86+ – for the longest time – only supports booting in legacy CSM-Mode (aka. „legacy BIOS“). While this isn’t a big deal, when you have memtest on a bootable stick on a Board with CSM-Support (which is still true for most mainboards), it can be a challenge, when the Mainboard is (U)EFI-Only, when you try to add a boot-entry from a running Linux-System, or when having no physical access, like on Servers, when you are using the respective Out-Of-Band-Management-System. Or maybe, you just want to have memtest on hand, because you regularily have the need to run it for whatever reason.


ZFS mount stuck on boot – Ubuntu 16.04 Xenial Xerus

When testing the new, natively implemented ZFS on Linux on Ubuntu 16.04, and following some older tutorials, you might get stuck on boot at the following point:

The reaons for this is the paralellized boot-sequence of systemd. ZFSonLinux has it’s own config, on which you can decide to mount ZFS-Pools on boot, which is exactly what kicks in here. Fixing this is easy when you know how to…