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Tools

Additional tools used with OpenCore.

PassMark MemTest86

PassMark MemTest86 is the original, free, standalone memory testing software for x86 and ARM computers.

Version used - 10.7 Build 1000.

Notes:

  • Currently, installation process is not automated - files are extracted manually to the memtest86 folder below.
  • It's assumed that steps below are done from macOS.
  • If done from Linux - follow this guide for extracting files to the directory specified below.

Installation:

  • Download MemTest86 archive.

  • Unzip it and mount memtest86-usb.img. It's assumed that it's located in ~/Downloads/memtest86-usb/memtest86-usb.img

    hdiutil mount ~/Downloads/memtest86-usb/memtest86-usb.img
    /dev/disk5              GUID_partition_scheme
/dev/disk5s1            Microsoft Basic Data            /Volumes/NO NAME
/dev/disk5s2            EFI
/dev/disk5s3            Microsoft Basic Data

  • (Optional) Remove old memtest86 folder contents:

    rm -fr ./memtest86
mkdir -p ./memtest86

  • Copy /Volumes/NO NAME/EFI/BOOT/ contents to memtest86 directory:

    cp /Volumes/NO\ NAME/EFI/BOOT/{BOOTX64.efi,blacklist.cfg,mt86.png,unifont.bin} ./memtest86/
chmod 0644 ./memtest86/{BOOTX64.efi,blacklist.cfg,mt86.png,unifont.bin}

  • Unmount the volume and cleanup

    hdiutil unmount /Volumes/NO\ NAME
rm -fr ~/Downloads/{memtest86-usb.zip,memtest86-usb}