Memtest86+ is thorough, stand alone memory test for Intel/AMD x86 architecture systems. BIOS based memory tests are only a quick check and often miss failures that are detected by Memtest86+. This package installs a bootable image to /boot/memtest86+.bin which is similar to the kernel images in the same directory. LILO users: Append this to your /etc/lilo.conf: image = /boot/memtest86+.bin label = memtest86+ Then run `/sbin/lilo` to update the boot loader. Don't forget to re-run `/sbin/lilo` if you upgrade this package. ELILO users: Append this to your /boot/efi/EFI/Slackware/elilo.conf: image = memtest86+.bin label = memtest86+ Next, copy memtest86+.bin alongside ELILO in your ESP partition: `cp /boot/memtest86+.bin /boot/efi/EFI/Slackware/memtest86+.bin` (Alternatively, use the .efi file instead of the .bin file; both should work identically. Just ensure that "image" refers to an existing file.) When ELILO starts, press tab to show the available options. Increase the delay parameter in elilo.conf if necessary to give yourself enough time to make a selection. GRUB Legacy users: Append something like this to your /boot/grub/menu.lst: title memtest86+ kernel (hd0,0)/boot/memtest86+.bin GRUB 2 users: Auto-detected by the /etc/grub.d/20_memtest86+ script. Run `grub-mkconfig -o /boot/grub/grub.cfg` to update the boot menu. rEFInd users: Auto-detected, no additional steps required. You may wish to copy /boot/memtest86+-$EFIARCH-$VERSION.efi to /boot/efi/EFI/tools/memtest86.efi so that it will appear on the tools line as a memory tester tool. If at this point it appears on both lines, edit the "dont_scan_files" setting in your refind.conf to hide the extra entries, or just remove this package. It is possible to build an IA32 EFI image on Slackware64, if you have a need for it, using `ARCH=i586 ./memtest86+.SlackBuild`. Compilation will fail due to missing /usr/include/gnu/stubs-32.h from glibc. Copy that file from stubs-64.h in the same directory (or create a symlink), and you may delete your copy/symlink after you have created the package. See /usr/doc/memtest86+-$VERSION/README.md for more info.