īig Sur is the successor to macOS Catalina, and was succeeded by macOS Monterey, which was released on October 25, 2021. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, and was released to the public on November 12, 2020.

The download links for the V4 downloads are still provided for those that prefer to work with the V4 bootable images.MacOS Big Sur (version 11) is the seventeenth major release of macOS, Apple Inc.'s operating system for Macintosh computers. In order to run MemTest86, PCs with legacy BIOS platform must use the older V4 release of MemTest86. However, you must use either Windows, Linux or Mac to create a bootable USB drive.įor information on creating a boot disk in Linux/Mac, visit the Technical Information pageĪs MemTest86 V10.2 supports only the newer UEFI platform, older PCs without UEFI support would be unable to boot MemTest86. The version of Windows, Linux, or Mac being used is irrelevant for execution. MemTest86 is a stand-alone program that does not require or use any operating system for execution.

Installation and usage instructions are available on the Technical Information page.

Please download the older V4 BIOS release of MemTest86 instead. On machines that don't support UEFI, MemTest86 will not boot.

IMPORTANT: MemTest86 V10.2 images support only UEFI boot.

* Once the purchase has been completed, a download link shall be provided that will contain the files needed to create your own bootable media.Ī pre-installed MemTest86 Pro USB Drive is available on our Pricing PageĪ site license is also available, for unlimited use of the software in a company, on our Pricing Page Documentation MemTest86 User Guide

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