Re: [SLUG] Linux on a 2nd drive?

From: Steve (steve@itcom.net)
Date: Sun Jun 03 2001 - 08:44:42 EDT


Yikes! I have to eat crow.
I've been working on too old hw for too long!
Thanks for the correction and reminder!

Steve
____________
Crow anyone? : )

On Saturday 02 June 2001 22:22, you wrote:
> Both LILO and GRUB will boot even if the boot information is above
> the 1st 1024 cylinders.
>
> Here's a sniplet from man lilo.conf:
>
>
> lba32 Generate 32-bit Logical Block Addresses instead of
> sector/head/cylinder addresses. If the BIOS sup­
> ports packet addressing, then packet calls will be
> used to access the disk. This allows booting from
> any partition on disks with more than 1024 cylin­
> ders. If the BIOS does not support packet address­
> ing, then 'lba32' addresses are translated to
> C:H:S, just as for 'linear'. All floppy disk refer­
> ences are retained in C:H:S form. Use of 'lba32'
> is recommended on all post-1998 systems.
>
> linear Generate linear sector addresses instead of sec­
> tor/head/cylinder addresses. Linear addresses are
> translated at run time and do not depend on disk
> geometry. When using `linear' with large disks,
> /sbin/lilo may generate references to inaccessible
> disk areas, because 3D sector addresses are not
> known before boot time. 'lba32' avoids many of
> these pitfalls with its use of packet addressing,
> but requires a recent BIOS.
>
> --
> Rob Mayhue
>
>
>
> On Saturday 02 June 2001 08:51 pm, Steve wrote:
>
> [snip]
>
> > In order for a drive to be bootable it has to have the boot information
> > within the 1st 1024 cylinders or it cannot boot. When you write the boot
> > sector you have very little room but to say where to fund the boot
> > information. If it cannot find it within the 1st 1024 cylinders you're
> > host!
> >
> > One way to get around it is to make a small boot partition within the 1st
> > 1024 cylinders ( /boot 25MB).
>
> [snip]
>
> > Steve



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