Re: Fedora vs. Ubuntu (hijacked: can I dual boot FC and Kubuntu?)

On Saturday 23 September 2006 13:29, James Wilkinson wrote:
Joel Rees wrote:
The sales guy at Pasokon Kobo over in Mikage a couple of years back
warned me against trying to use both master and slave at the same time,
but they admitted to not having much experience with Linux. In the
MSWindows universe they were familiar with, there were enough reports
of silent corruption they figured it was best to stay with one channel,
one drive, particularly when building RAID on ATA controllers.

There *used* to be problems with some controllers, most notoriously the
CMD640. For more details, see Documentation/cdrom/ide-cd and
Documentation/ide.txt (from the kernel documentation).

The CMD640 is now obsolete.

I know I'm hijacking a thread here, but I have a box thats running my
milling machine that resembles this particular duck in that it will not
willingly tolerate a drive set as slave on the primary interface,
corrupting both drives at the drop of a very small hat. This board, a
mach-speed, has this ide controller on it:

0000:00:11.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if
8a [Master SecP PriP])
Subsystem: VIA Technologies, Inc.
VT82C586/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE
Flags: bus master, medium devsel, latency 32
I/O ports at dc00 [size=16]
Capabilities: [c0] Power Management version 2

After removal of the slave drive I was trying to dual boot from, that box
is as solid as a rock. So take this for whatever its worth. I also
haven't tried it as hdd because the cables won't reach due to the drives
position in the case.

Correct me if I'm wrong, but master and slave on a single channel
can't handle commands concurrently?

That's my understanding. And that's why *I* would advise against having
two devices on the same channel *if* they are both going to be heavily
used at the same time.

If they are used for different OSes, that sounds fine.

James.

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