![]() Previously I thought it was my Thunderbolt3 device + WD Black SN750. Using the internal drive works in Monterey, but below my expectations. I have an external boot for my iMac 18.2 (2017 21inch 4K - 1TB Fusion drive) - system. I have 'Kernel stack memory corruption detected' I hade a ' Kernel stack memory corruption detected ' restart problem in the past. Would Memtest be better, and where can I download it? Where can I download Apple Hardware Test? Rember is running so slowly, it goes through fewer than 30 cycles out of 255 in 8 hours! Is it not possible to test one 4GB stick at a time, or is something else going on? I removed one of the DRAMs, started the Mac in Safe mode on 4GB DRAM, all apps closed, and tried running Rember again. ![]() On the chance that it is the hardware itself that's bad in my aging Mac mini (otherwise fine for what I do), I'm trying to test the memory banks one at a time. So that fix didn't work, it's still a bad stick or a bad bank. ![]() I switched the DRAM in the banks, ran Rember overnight on max cycles, another fail. I ran a Rember test overnight on max 255 cycles that indicated failed DRAM, but it doesn't show which bank contains the bad stick. My mid-2010 Mac mini has 2 banks of DRAM, each containing 4GB of, yes, Kingston DRAM (which worked without problems for around 9 years). I believe bad DRAM has caused episodes of kernel panic, which became more frequent recently. ![]()
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