lkml.org 
[lkml]   [1999]   [Jan]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 10.2 Gig HDD
	From: Max <max@Linuz.sns.it>

Logical geometry used by Linux must be such that Linux can calculate the
correct physical geometry from it.

False.

Now, IDE disks can have at most 16 *physical* heads. If you tell the kernel
that the geometry of your disk is 787/128/63 (as with my 3G Western Digital)
the kernel will use the *physical* geometry 6296/16/63 for C/H/S addressing
(it's deduced from the logical geometry you specify, knowing Heads<=16)

False.

Till now things are simple: get your disk *physical* geometry,
invent a COMPATIBLE logical geometry and tell it to the kernel.

By 'compatible' I mean: the kernel must be able to deduce the correct physical
geometry from it. It's easy since the kernel divides by 2 the number of heads
and multiplies by 2 the numbers of cylinders, until heads<=16, to get the
physical geometry.

Hogwash. Please do not spread nonsense if you do not know
what you are talking about.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:49    [W:0.069 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site