Re: [PATCH] check_memory (was Re: Perform minimal RAM test at boot)

Louis J. LaBash (
Tue, 2 Nov 1999 08:47:25 -0600


> > Note also that the only way to test for memory's presence is to write
> > to it & try to read back. This destroys any data which might have been
> > put there by the bios.........

One could read memory then store the data before overwriting. This
assumes a scratch area is available. A long time ago when memory was
expensive a thread on this list discussed using above 640K memory that
Linux ignored. I presume this 384K of memory still is not used and a
candidate for scratch.


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