Etienne Lorrain (etienne_lorrain.delete@this.yahoo.fr) on January 14, 2021 2:02 am wrote:
> And another problem with Virtual Managers (but this one not only on Macs):
> You might want to check your whole DRAM for failing bits, for instance using memtest under BIOS, and
> having a virtual (i386 real-mode) machine created by the EFI BIOS (with maximum 4 Gbytes of DRAM) will
> lead to a "memory error" or crash when attempting to check the DRAM at address 0x1_0000_0000...
> I suppose someone will say that Macs have a perfect DRAM and never develop any randomly failing bit.


You don't need to boot a whole OS for that, you just need to boot a stub that could work entirely on USB I/O (basically treating it like a serial port) if you can't even figure out how to get the GPU to output text.

I'll bet the efforts to boot Linux on the M1 have already progressed to the stage where they could run memtest.