From: Herbert Poetzl <herbert@13thfloor.at>
To: Dag Wieers <dag@wieers.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Qemu limited to 11GB
Date: Sat, 4 Dec 2004 15:50:34 +0100 [thread overview]
Message-ID: <20041204145034.GB670@mail.13thfloor.at> (raw)
In-Reply-To: <Pine.LNX.4.61.0412041228240.921@horsea.3ti.be>
On Sat, Dec 04, 2004 at 12:32:42PM +0100, Dag Wieers wrote:
> Hi,
>
> When I try to use a 80GB disk with qemu, the BIOS (and underlying os)
> reports it as a 10GB disk. I've tried providing the CHS values using
> -hdachs, but it does not work either.
>
> qemu -hdachs "155061,16,63" -hda /dev/hda
115061 % 65536 = 23989
23989*16*63*512/1024^3 = 11
try using 255/256 heads instead of the 16 heads ...
http://www.allensmith.net/Storage/HDDlimit/Address.htm
BIOS IDE Limit
----------------------------------------
Maximum Cylinders 1024 65536 1024
Maximum Heads 256 16 16
Max. Sectors/track 63 256 63
HTH,
Herbert
> Is qemu limited to < 11GB disks, is there a bug or am I doing something
> wrong ? :)
>
> The disk is said to be 10786 MB by the qemu BIOS, while in reality
> Linux reports: 80026 MB. Linux reports CHS=65535/16/63, while fdisk
> reports: 155061,16,63
>
> It would be useful to have the qemu BIOS print out the CHS it is using.
>
> Kind regards,
> -- dag wieers, dag@wieers.com, http://dag.wieers.com/ --
> [all I want is a warm bed and a kind word and unlimited power]
>
>
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
next prev parent reply other threads:[~2004-12-04 15:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-04 11:32 [Qemu-devel] Qemu limited to 11GB Dag Wieers
2004-12-04 14:50 ` Herbert Poetzl [this message]
2004-12-05 2:23 ` Dag Wieers
2004-12-05 11:34 ` Fabrice Bellard
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