Re: Cylinder limits jumper for drives over 32GB

From: Olaf Dabrunz (1dabrunz@informatik.uni-hamburg.de)
Date: Wed Mar 29 2000 - 01:33:20 EST


> You have proven the valid case of onboard chipests and thank you.
> This works only because of LBA translations.
>
> Strip the drive and pass hdb=79406,16,63
>
> root@p6dnf% fdisk /dev/hdg
> The number of cylinders for this disk is set to 13870.
> This is larger than 1024, and may cause problems with:
> 1) software that runs at boot time (e.g., LILO)
> 2) booting and partitioning software form other OSs
> (e.g., DOS FDISK, OS/2 FDISK)
>
> Command (m for help):
>
> 13870*16*63 != 79406*16*63
>
> Welcome to the world of 40GB becoming ~7GB......
>
> Recall some time ago that people raged over the issue of forcing huge
> geometry.
>
> Cheers,
>
>
> On Mon, 27 Mar 2000, Olaf Dabrunz wrote:
>
> > Hello everyone.
> >
> > Just in case this might help as an interim-solution:
> >
> > I use the Maxtor 94098U8 (40GB, 5400 rpm) since end of January. I have no
> > problems using it under Linux 2.2.13 (SuSE 6.3), although I use an older
> > motherboard with Award BIOS and no fix available. I just checked the higher
> > cylinders again with "mke2fs -c /dev/hdb11".
> >
> > --------------------
> > And my setup is (sorry, it's Oscar night...:-):
> >
> > No jumper, no JUMPER.EXE (or somesuch)
> > Disable the drive in the BIOS (keeps it from hanging)
> > Install EZ-Drive (MaxBlast) (actually, don't know if this has any effect other
> > than helping to boot Windows...)
> > Use lilo with an "append" parameter of "hdb=4982,255,63"
> > --------------------

Of course you should go on discussing the kernel and user-space issues with
IDE geometries. I just tried to show an _interim_solution_ to the original
inquiry, until the real issues can be resolved.

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