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Re: LILO cylinder problem

On Wed, 23 Apr 1997, Rick Jones wrote:

> I don't understand why lilo is doing this.  I've never had this problem
> before.
> I just repartitioned my drive and put linux on hda2.  When I try to run
> lilo to boot linux from hda2 instead of hda1 it gives me this error about
> my cylinders.
> 	geo_comp_addr: Cylinder number is too big (2312 > 1023)
> I am aware that, for whatever reason, lilo won't look beyond cylinder
> 1023, the 540MB line that M$ drew out of ignorance years ago.  (It might
> not have been Bill but I like blaming shit on him anyway.)
> Anyway.  The point is that I took this into account and started hda2 at
> cylinder 817.  I gave hda1 405MB, hda2 792MB, and hda3 is a 20MB rescue
> partition.
> So why in the hell does lilo report cylinder 2312 which I'm fairly sure is
> in hda3 when I'm setting up hda2 which starts at 817?

A bit of back-of-the-envelope maths: hda1=405MB=816cyl, i.e. 2cyl per MB.
Therefore hda2 ends at about 1200MB=2400cyl.

I don't run large EIDE disks, but I think the entire partition has to come
in under the 1023 limit. After all, you have no control over precisely 
where in the partition the kernel resides.

> I have used this same partition setup before without any trouble.  Anyone
> have a clue?

Perhaps the kernel was nearer the start of the partition.

> When is lilo going to recognise hard drives larger than 540MB?  This is an
> ignorant limitation.  Now that BIOS can read them when is lilo going to be
> updated?

David Wright, Open University, Earth Science Department, Milton Keynes MK7 6AA
U.K.  email: d.wright@open.ac.uk  tel: +44 1908 653 739  fax: +44 1908 655 151

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