fdisk and big EIDE drives

I am trying to install Linux (RedHat 4.1), OS/2, and maybe even Win 95 on a new 6.4 Gb EIDE drive from Western Digital.  The drive has 13,328 cylinders, 15 heads, and 63 sectors.  The fdisk programs in Linux, OS/2, and Win 95 all see the disk differently, and none of them seems to be able to partition it correctly.  In all cases, the fdisk program thinks it knows what it is doing, but when you try to install an OS on the drive, the partition table is found to be hosed and the partitions inaccessible.

I have heard that IBM has a fixpack for Warp 4 which takes care of the problem, but I am not sure about Linux (and don't really care about Win 95...)  Linux fdisk reports a "Begin", a "start", and an "end" for each partition I create.  The start and end cylinders (or sectors if you use that option) are reported correctly, but the Begin entry always seems to be a multiple of 1024 cylinders that is somewhere near (above or below) the start value.  When I tell fdisk to verify the partition table, sure enough, it says that most of the partitions overlap.

The RedHat installation kernel detects the drive and reports its geometry correctly, and my BIOS is new enough that it seems to understand the drive too.  Is there a newer version of fdisk that avoids this problem?  Am I doing something wrong?  

Justin Harlow
harlowAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

mortenmoCommented:
The BIOS will understand it, but the BIOS' INT13 interface to
the disk i/o is only 10-bits (you can only have cylinders upto
1024).

This is not a problem for linux as it doesn't use the bios to
read data, tho you need to tell fdisk / LILO about the disk
geometry (you do this in the advanced meny on fdisk)..

I'm not gonna go in detail here, all this is in a howto found
on sunsite (f.ex.
"ftp.nvg.ntnu.no/pub/linux/sunsite/docs/HOWTO/mini/Large-Disk.gz"

The howto has directions about how to partition the disk with
fdisk and howto use it with lilo.

If you need the file, just give me your email and I'll mail it
to you..

Hope this helps.

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
harlowAuthor Commented:
Thanks.  I'll check out that HOWTO
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Linux

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.