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echo: tech
to: Jasen Betts
from: Roy J. Tellason
date: 2003-08-19 20:00:56
subject: bad ram

Jasen Betts wrote in a message to Roy J. Tellason:

 JB> Hi Roy.

 JB> 16-Aug-03 20:01:27, Roy J. Tellason wrote to all

 RJT> I never saw this one before...

 RJT> Booting the linux workstation I'm messing with,  it goes through the
 RJT> normal POST stuff fine,  as far as I can see.  There's 48M of ram in
 RJT> there,  2 16s and 2 8s,  and I suspect the 8s have a problem as the
 RJT> system acted up a bit when I had them in there with 4s before I got
 RJT> the 16s

 RJT> Anyhow,  booting the system gives a whole pile of messages,  typical
 RJT> of linux, and up near the top are these

 RJT> BIOS-provided physical ram map:
 RJT>  BIOS-e820: 0009fc00 {at} 00000000 (usable)
 RJT>  BIOS-e820: 00000400 {at} 0009fc00 (usable)
 RJT>  BIOS-e820: 02f00000 {at} 00100000 (usable)

 JB> looks like 48 megs to me, 

That's what's supposed to be in there,  two 16s and two 8s...

 JB> (less the block 000a0000 to 000fffff) which is the legacy hardware 
 JB> and rom area.

???

 RJT> I'm guessing that the first number refers to the size of the available
 RJT> block of ram,  and the second one to the address.  Anybody ever seen
 RJT> these before

 JB> it also looks like you've got the bios extensioon option set to use
 JB> the " high memory" option.  (that's the second block) set it to 
 JB> the low memory option and you should see a two blocks. 

Set where?  Looking in CMOS setup I don't see anything that seems to pertain to that.

 JB> BIOS-e820: 000A0000 {at} 00000000 (usable)    (640k low memory)  
 JB> BIOS-e820: 02f00000 {at} 00100000 (usable)    (47M remainder) 

 JB> does that help?

Some.  I never saw these before,  but some flakiness in the system prompted
me to try to run it with the sound card removed.  I hadn't configured
anything to support that yet anyway,  so I yanked it out.  And that's when
this stuff showed up...

 JB>  - Origin: If at first you don't succeed, the hell with it.

Nah,  I'm *way* too stubborn for that approach to work.

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