Re: How to determine the size of cylinder?
From: Bob Willard (BobwBSGS_at_TrashThis.comcast.net)
Date: 11/29/04
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Date: Mon, 29 Nov 2004 06:05:59 -0500
linuxquestion@yahoo.com wrote:
> Dear experts,
>
> I have a good technical question for you.
>
> From the newsgroups:
>
> "From: Gary Boswell (gboswell@dormnet.stu1.uconn.edu)
> Subject: Hard Drive > 500 mb FAQ
>
> Back in ancient times computers had a limitation in the BIOS of the following:
> cylinders = 1024
> heads = 16
> sectors = 63
> * 512
> -----------
> or 528,482,304 bytes
> Due to these limitations the maximum size of a hard drive was:
> 528 chkdisk mb
> 503 CMOS mb"
>
>
> My question is:
> - for a given hard drive, how can I tell the size of the cylinder?
>
> In either Redhat, or Windows XP?
>
> Thanks
All but ancient HDs use ZBR, which means that the number of sectors on
a cylinder varies. Outer cylinders have more sectors than inner ones.
-- Cheers, Bob
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