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SubjectRe: 2.2.0pre5ac1: hd geometry changes


On Sun, 10 Jan 1999, Guest section DW wrote:

> From: Walter Hofmann <walter.hofmann@stud.uni-erlangen.de>
>
> Linux 2.2.0pre5ac1 reports an invalid geometry to applications, 2.2.0pre4
> was fine. It still boots ok, but lilo and fdisk fail. /dev/sd[ab] are IBM
> DCAS-34330 4GB on an adaptec aic7xxx controller.
>
> cat /proc/scsi/aic7xxx/0:
> Extended Translation: Disabled
>
> fdisk output (2.2.0pre5ac1):
>
> Disk /dev/sda: 64 heads, 32 sectors, 4134 cylinders
>
> fdisk output (2.2.0pre4):
>
> Disk /dev/sda: 255 heads, 63 sectors, 527 cylinders
>
>
> You do not mention the status of Extended Translation for
> 2.2.0pre4, but I suppose it was Enabled, and this change
> in translation setting caused the change in geometry.

I didn't check is (and I am not at home right now), but according to the
fdisk output it should be on.

> Now why was the translation setting changed?
> At first sight I do not see any part of the pre5* patch
> fiddle with the aic7xxx AHC_EXTEND_TRANS_A setting.
> You didnt do this yourself in the card setup?

No. If I boot 2.0.36 everything works again.

> Or you forgot to add a boot option aic7xxx=extended ?

I never added it before. But I know of a second person with exactly the
same problem, he has a SCSI controller as well, but I don't know if it is
an aic 7xxx as well.

Walter

>
> Andries
>


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