Memtest86 for Mac?

sanzen07

Senior member
Feb 15, 2007
402
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I've got a Mac Pro with 8-cores and 8GB of DDR2. I'm seeing some occasional weirdness and would like to test out the RAM. Is there a tester like Memtest86 for Mac? I saw the one at Memtestosx.org but it only seems to run after you've booted into OS X so it wouldn't be thorough because it can't access RAM being used by other programs and the OS. Any help would be appreciated! Thanks.
 

Nothinman

Elite Member
Sep 14, 2001
30,672
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As long as it's an Intel Mac Just burn a regular memtest86 iso and boot from it and it should work.
 

Tegeril

Platinum Member
Apr 2, 2003
2,906
5
81
Or insert your install DVD disc 1, hold D at startup and run the extended test.
 

umrigar

Platinum Member
Jun 3, 2004
2,088
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Applejack includes memtest as an optional install.

http://www.macupdate.com/info.php/id/15667/
http://sourceforge.net/projects/applejack

AppleJack is a user friendly command line tool for troubleshooting Mac OS X. With AppleJack you can perform basic troubleshooting on a computer even if you can't load the GUI, or don't have a startup CD handy. AppleJack runs in Single User Mode and is menu-based for ease of use.

This package installs the following files:
/private/var/root/Library/Scripts/applejack.sh - the AppleJack script
/usr/share/man/man8/applejack.8 - man page for AppleJack
/Library/Documentation/AppleJack - ReadMe and License files

Additionally, if you choose 'Customize' during the installation process, you can choose to have the following files installed as well:
/usr/local/sbin/memtest - the memtest memory testing program
/usr/share/man/man8/memtest.8 - man page for memtest
/Library/Documentation/memtest414 - the documentation for memtest

The installer also modifies the root user's profile (/var/root/.profile) in order to create a friendly usage reminder message and alias at startup in single user mode.

After the installation is complete, type 'man applejack' in a Terminal window to get more information. I also recommend you print out the ReadMe document while you are installing AppleJack. It will likely save you a lot of head scratching once you endeavor to strike out beyond the basic applejack auto restart command.

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Memtest OSX

This is a distribution of Tony Scaminaci's Memtest OS X program (version 4.14). It allows you to check almost all available RAM for hardware errors. If installed together with AppleJack, you can use AppleJack's expert mode to easily run memory tests while in single user mode. See http://www.memtestosx.org for more info.