Linux and large IDE drives on a standard ide system

by Dass Rami Patri » Sat, 08 Jul 1995 04:00:00

Hi,
I have a Western Digital 540 mb hard drive, and a standard IDE card. My
bios recognizes 1048 cylinders, but I have a standard IDE card, I'm
planning to use the whole hard drive for linux, since I have another one
for DOS, are there ways to use all the cylinders, because when I was
playing with the partition under dos, all it gave me was 500 mb, I would
appreciate the help

rami dass

Top

1. Large IDE hard drive & "Big IDEs" HOWTO

(Lifted from my nephew who is presently denied access to News Groups:)

Subject: Large IDE hard drives.

Help!

I am unable to access my large IDE drive. Yes, I have read the "big-ide"
help document (which did contain useful information).

I have just installed the Slackware 3.0.0 (ELF) from the 5 CD-ROM set.

I have 1.2GB(hda) and 200MB(hdb) IDE drives on my system. I have installed
Linux on hdb (200MB), dedicating the drive to a ext2 file system and a swap
partition.

I have an fairly old system, so I have to use EZ drive software to access
my large IDE drive under DOS/Windows 95. I believe it resides in the boot
sector.

I currently boot Linux from a floppy.

I have added the lines:

append="hd=2477,16,63 hd=683,16,38"

linear

to my "lilo.conf" file, and executed lilo to update the boot sector (of the
floppy I boot from).

When I boot I receive messages indicating that the above lines have indeed
gone into effect.

Incidently, when I boot, I get the message:

"No BIOS32 extensions present. This release still depends on it. Sorry."

If I try to mount my large drive (which is unfortunatly, partitioned/formatted
as one large DOS [VFAT] drive) with

mount -t msdos /dev/hda /mnt

I receive the error message:

"wrong fs type or bad superblock on /dev/hda"

I have no trouble mounting DOS floppies (/dev/fd0).

If I run Linux fdisk, go to expert mode and change the heads and cylinders
to the "bogus" values (i.e., 618 cyls, 64 heads), then look at the partition
table, I get several errors. Under DOS or Windows, Norton Disk Doctor says
that my partition table (and everything else about my drive) is fine.

Any help accessing my large drive would be appreciated.

Ed can be reached directly at:

He and I thank you.

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