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Bug 11278

Summary:	Memory above 64MB not recognised
Product:	[Retired] Red Hat Linux	Reporter:	Simon Oldfield <simon.oldfield>
Component:	kernel	Assignee:	Michael K. Johnson <johnsonm>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.2
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2000-05-10 03:44:06 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Simon Oldfield 2000-05-07 12:33:07 UTC

I have just installed redhat linux 6.2 onto a PC with 256MB of RAM on an
MS-6153VA ATX VIA Apollo Pro133 Mainboard.  Linux is reporting that there
is only 64MB of RAM.  The BIOS, win95 and win98 all report 256MB of RAM.

Comment 1 Simon Oldfield 2000-05-08 23:58:59 UTC

I got linux to recognise the correct amount of memory by sepcifying the
"mem=256MB" option to lilo.  Is this a BIOS problem or a linux problem?  Is it
simply that this is a new-ish motherboard, and it will all go away at some
point in the future or will I have to explicity set the memory forever more?

Comment 2 Doug Ledford 2000-05-10 03:44:59 UTC

This sounds like your bios doesn't support the extended memory detection call
that the 2.2.14 kernel we ship uses.  This shouldn't be a problem with the 2.4
kernel since it uses the 0e80 call to get the bios memory mapping.  Until then
you will need to keep passing the mem= parameter to the 2.2 kernels on your
machine.

Comment 3 Doug Ledford 2000-05-10 04:06:59 UTC

Duh....that should be the e820 call in the sentences above....technical accuracy
and all...