[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] qemu-img documentation
From: |
Panagiotis Issaris |
Subject: |
Re: [Qemu-devel] qemu-img documentation |
Date: |
Tue, 16 Nov 2004 16:42:56 +0100 |
User-agent: |
Mozilla Thunderbird 0.8 (X11/20040926) |
Hi,
Jason Brittain wrote:
ML wrote:
---
Fabrice Bellard said the following on 11/16/2004 02:46 AM:
Try my last fix. The important fix is in
hw/ide.c:ide_guess_geometry(). I think the problem is that after
reboot when installing ide_guess_geometry() returns an invalid
geometry because the BIOS translated geometry is stored in the MBR
instead of the real hard disk geometry.
For the desperate user, I added an option to manually specify the
BIOS translation mode.
With this fix now I can boot XP images newly created with 0.6.1 but I
can't boot any longer my older images created with versions < 0.6.1
unless I specify hda geometry on the command line.
This is going to cause lots of people to not be able to figure out
how to use qemu anymore after an upgrade. For example, even if I
knew that I needed to use the -hdachs option (pronounced "headaches"),
how would I know what geometry numbers to give it? I'm not real
good with this sort of thing, and I haven't found any docs yet that
try to explain it from the perspective of a VM user. I know, I know,
you can't have everything. But, I do think this will cause users
repeated hdachs. :)
I've used "fdisk c.img" and used the reported values as parameters
for hdachs. This together with specifying the bios translating mode
enabled me to boot old qemu images again.
So, I used:
"fdisk c.img"
Used the p command to print the partition table, which also
shows the necessary disk information:
16 heads, 63 sectors/track, 4161cylinders
And started qemu:
"qemu -hda c.img -hdachs 4161,16,63,none"
Worked for me, but I don't know if fdisk is always
right.
With friendly regards,
Takis
--
------------------------------------------------------------------------
Panagiotis Issaris
Katholieke Universiteit Leuven
Division Production Engineering,
Machine Design and Automation
Celestijnenlaan 300B address@hidden
B-3001 Leuven Belgium http://www.mech.kuleuven.ac.be/pma
------------------------------------------------------------------------
- [Qemu-devel] qemu-img documentation, Fabrice Bellard, 2004/11/15
- Re: [Qemu-devel] qemu-img documentation, Hetz Ben Hamo, 2004/11/15
- Re: [Qemu-devel] qemu-img documentation, Fabrice Bellard, 2004/11/15
- Re: [Qemu-devel] qemu-img documentation, ML, 2004/11/16
- Re: [Qemu-devel] qemu-img documentation, Jason Brittain, 2004/11/16
- Re: [Qemu-devel] qemu-img documentation,
Panagiotis Issaris <=
- Re: [Qemu-devel] qemu-img documentation, Johannes Schindelin, 2004/11/16
- Re: [Qemu-devel] qemu-img documentation, ML, 2004/11/17
- Re: [Qemu-devel] qemu-img documentation, Jim C. Brown, 2004/11/17
- Re: [Qemu-devel] qemu-img documentation, Fabrice Bellard, 2004/11/16