Re: 200GB IDE disk on old system
- From: "Wilhelm B. Kloke" <wb@xxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 24 Mar 2007 09:32:11 +0000 (UTC)
Torfinn Ingolfsen <tingo@xxxxxxxx> schrieb:
Wilhelm B. Kloke wrote:
I want to put a 200GB into my old AMD K6 system. The BIOS does not support
more than 32GB. Is there a way to persuade FreeBSD to accept the
real disk size?
Yes, boot FreeBSD and find out what it thinks.
FreeBSD 6.2 thinks 32GB is disk size.
I partitioned the disk into 20,80,10 and 90 GB partitions. Now, FreeBSD
fdisk shows these partitions, but still reports the disk as having
655xx cylinders, making up 32GB.
Note: there are a few systems where the hardware (disk controller)
doesn't support large disks (48 bit LBA). On such systems, nothing you
do in FreeBSD (or another operating system) will help.
This is one point I want to know about. Does the controller really need
to know about lba48? Presumably, this is only implented in software
protocol.
There is one other issue I found out. It seems to matter whehter the disk
is put first or second on the cable. I have not enough hardware knowledge
how master/slave selection is done using cable select. The only
way I can think of is that the plugs may have different pins removed.
Am I right?
--
Dipl.-Math. Wilhelm Bernhard Kloke
Institut fuer Arbeitsphysiologie an der Universitaet Dortmund
Ardeystrasse 67, D-44139 Dortmund, Tel. 0231-1084-257
PGP: http://vestein.arb-phys.uni-dortmund.de/~wb/mypublic.key
.
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