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memtest86 can be configured to display address bit patterns that can then be consumed by the Linux kernel as a command line argument: https://lwn.net/Articles/4
by rzzzt 10y ago
memtest86 can be configured to display address bit patterns that can then be consumed by the Linux kernel as a command line argument: https://lwn.net/Articles/440319/ https://lwn.net/Articles/440319/
But in other cases, this can be managed entirely by the BIOS. I know (or rather, think -- didn't boot Linux on a machine with memory problems recently) that some Dell machines will mark bad locations/ranges as reserved in the ACPI memory map if you run the built-in diagnostic tool from the boot menu.
- j_s 10y agoI've heard rumors of low prices on high-capacity "bad RAM", but never been able to find anywhere to buy it. Have you investigated this possibility before?
- rzzzt 10y agoNever heard that one before; I don't know much about how problem spots usually develop, so I would be wary about the "stability" of any known faults when using a module like that.