MemTest86
What can I use to test my memory? I have run the diagnostic that comes with computer and remember. I tried running memtest86, but could not get it to work. Any suggestions?
iMac late 2013 running Mojave
Cynthia
iMac Line (2012 and Later)
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Create a bootable Memtest86 USB drive using Etcher. Option Boot the USB drive and select the orange icon labeled "EFI". The current version of Memtest86 (v.8.2) only loops the tests four times unlike the older versions which could be looped much longer. The older v7.5 version is available here. Once Memtest86 boots, it is safe to remove the USB drive. FYI, It is not unusual for memory to fail the Row Hammer Test and doesn't necessarily mean the memory is bad. It just means the memory is vulnerable and can be "attacked" to gain root access.
If you cannot get Memtest86 to boot, then you should try another USB stick or even a USB drive. Not all USB sticks will boot properly on a Mac.
