Memtest86

[fergusrg]

I need to launch Memtest86+ at startup of my Proxmox machine. I manage to add it to Grub, but then I don't know how to add it to systemd-boot.

I do "proxmox-boot-tool refresh" and only available kernels are added, not Memtest86+. Any ideas?

 

[Hannes Laimer]

Hey,

you can download it from the memtest86 website[1]. Then, after unzipping it you'll end up with a file named memtest86-usb.img (among others). With fdisk -l memtest86-usb.img you should get something like

...
Units: sectors of 1 * 512 = 512 bytes
...
Device              Start     End Sectors  Size Type
memtest86-usb.img1   2048  512000  509953  249M Microsoft basi
memtest86-usb.img2 514048 1023966  509919  249M EFI System

Now you can mount it with mount -o loop,offset=263192576 memtest86-usb.img /mnt/tmp, the offset has to be sector_size*start_sector (here 512*514048=263192576). Then copy /mnt/tmp/EFI/BOOT/BOOTX64.efi to /boot/efi/EFI/BOOT/memtest/memtest.efi. Lastly create /boot/efi/loader/entries/memtest.conf with

title    Memtest86
efi    EFI/memtest/memtest.efi

After rebooting you should be able to select "Memtest86" in your boot menu.

As an alternative you could also just put memtest on a usb drive.


[1] https://www.memtest86.com/downloads/memtest86-usb.zip