URL:
<http://savannah.gnu.org/bugs/?22751>
Summary: GRUB1.96 fails to recognize more than 4GB of memory
Project: GNU GRUB
Submitted by: octplane
Submitted on: jeudi 27.03.2008 à 11:31
Category: Booting
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 1.96
Reproducibility: Every Time
Planned Release:
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Details:
Hi,
This bugs seems to exists in grub legacy but a patch exists
(http://lists.xensource.com/archives/html/xen-users/2007-08/msg00028.html)
which cannot simply be applied to grub-2.
In grub-2 however, the amount of memory detected is limited to the first 4GB
of memory. On a machine having 16GB the kernel reports an incorrect figure.
>From the documentation found on the internet this issue arises when using
kernel that does not recompute the amount of memory themselves and trust the
bootloader to give exact figures.
This is the case when using Xen-3.0.3 and grub-1.96 on debian stable. In my
case, I need 1.96 because of a fully LVMed disk.
(XEN) Command line: (racine-os)/boot/xen-3.0.3-1-i386-pae.gz dom0_mem=256M
(XEN) Physical RAM map:
(XEN) 0000000000000000 - 000000000009f000 (usable)
(XEN) 0000000000100000 - 00000000bfb50000 (usable)
(XEN) System RAM: 3066MB (3140540kB)
(XEN) Xen heap: 10MB (10316kB)
(XEN) PAE enabled, limit: 16 GB
This is on x86 architecture.
I hope updating the patch is a matter of minutes to someone knowing the
internals of grub-2. I'm afraid it's not my case...
Thanks for providing GRUB.
--
Pierre.
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