From: Andries.Brouwer@cwi.nl
To: jlladono@pie.xtec.es
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4.x kernels, big ide disks and old bios
Date: Sun, 30 Dec 2001 02:47:30 GMT [thread overview]
Message-ID: <UTC200112300247.CAA141891.aeb@cwi.nl> (raw)
> # cat /proc/ide/hdc/settings
> name value min max mode
> ---- ----- --- --- ----
> bios_cyl 119150 0 65535 rw
> bios_head 16 0 255 rw
> bios_sect 63 0 63 rw
> What's the meaning of the 65535 max limit in bios_cyl?
It is meaningless.
(Maybe there was some meaning long ago, for example because
HDIO_GETGEO only uses a 16-bit field for #cyls.
These days bios_cyl is not used anywhere. Not in the kernel,
not in user space. It is just some random number, computed
by taking disk-size / (heads*secs).)
next reply other threads:[~2001-12-30 2:48 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-30 2:47 Andries.Brouwer [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-12-26 2:12 2.4.x kernels, big ide disks and old bios Andries.Brouwer
2001-12-25 16:38 Andries.Brouwer
2001-12-25 22:52 ` Eric Lammerts
2001-12-26 9:28 ` Josep Lladonosa i Capell
2001-12-26 10:39 ` Santiago Garcia Mantinan
2001-12-25 10:56 Josep Lladonosa i Capell
2001-12-25 14:10 ` Santiago Garcia Mantinan
2001-12-25 19:09 ` James Stevenson
2001-12-26 16:33 ` Stephan von Krawczynski
2001-12-27 13:14 ` James Stevenson
2001-12-27 18:51 ` Stephan von Krawczynski
2001-12-27 19:53 ` Ido Diamant
2001-12-27 22:41 ` Guest section DW
2001-12-27 23:04 ` Stephan von Krawczynski
2001-12-28 3:29 ` Andre Hedrick
2001-12-30 1:40 ` Josep Lladonosa i Capell
2001-12-28 21:52 ` Jorge Nerin
2001-12-30 9:33 ` Josep Lladonosa i Capell
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