On Wed, 30 May 2001, Darian Lanx wrote:
> Hello list.
> After debugging this with a few friends who are by far more experience din
> freebsd than I am, I have been asked to report the following strange
> behaviour to this list
>
> He asked me to be specific, so I am going to provide a much information as I
> can.
> The hardware used is as follows:
> ASUS CUSL Motherboard
> 2 Hard drives
> On the primary Master a Maxtor 53073U6 30736 MB
> ioctl (I am in linux) reports the following
> geometry for it:
> geometry = 3736/255/63, sectors = 60030432, start = 0
>
> The second hard drive on the secondary Master channel is a IBM DTLA-307030
> also 30736 MB. ioctl reports the following geometry for this drive:
> geometry = 3737/255/63, sectors = 60036480, start = 0
>
> I have downloaded the 4.3 boot floppies from ftp.at.freebsd.org and then
> booted my system.
> After entering the installer friend told me to press scroll lock and scroll
> up to see the actual output of the Kernel.
>
> The output for the drives reads as follows:
> ad0 2014 MB <Maxtor 53073U6> [4092/16/63] at at-0-master UDMA66
I had this problem after I enabled the '4092-cylinder limit' jumper on my
Maxtor drive, because my BIOS (at that point) hung with a drive over 4092
cylinders. I flashed the BIOS afterwards, but forgot about the jumper,
because windows/linux both (somehow) saw the full geometry of the drive.
FreeBSD only saw 2014MB until I removed the jumper. Perhaps your drive has
a similar jumper? check the manual.
> ad2 29314 MB <IBM DTLA-307030> [5956/16/63 at at-1-master UDMA100
29314 * 1024 * 1024 bytes (i.e. 2914 megabytes)
== 30736 * 1000 * 1000 bytes (i.e. 2914 million bytes)
Its something harddrive manufacturers do to make their drives look bigger...
--
David Taylor
[EMAIL PROTECTED]
PGP signature
