[ubuntu] No 'memtest' option in Grub.

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http://ubuntuforums.org – I've been trying to run a memtest but I don't have the option in Grub. I'm running Ubuntu 12.10 64 bit, dual boot with Win7 All I get is this: Ubuntu Advanced Options for Ubuntu Windows 7 (loader) on /dev/sda1 Windows 7 (loader) on /dev/sda2 I tried to run a live USB (the one I installed from) but I don't have the option there either. I tried searching the archives but couldn't find any similar threads. Thanks for any help. (Hardware)