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

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2006-09-23 (土) の 09:39 -0400 に Claude Jones さんは書きました:
> On Friday September 22 2006 11:56 pm, Joel Rees wrote:
> > On 2006/09/23, at 11:30, Claude Jones wrote:
> > > What are you talking about?
> >
> > Good question. Like I said in my earlier post, the advice my be
> > outdated. For all I know it may not apply to Linux kernel and drivers
> > written after a certain year, probably before 1999 if that's the
> > case. I've never seen it myself that I know of, but then I've mostly
> > avoided MSWindows compatible hardware. And the companies I've worked
> > for have tended to not fully populate a channel.
> >
> > You could plug something like "master slave ata corruption" in a
> > search at Google and get some interesting reading, though.
> >
> > 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.
> >
> > Correct me if I'm wrong, but master and slave on a single channel
> > can't handle commands concurrently? What I recall reading was that it
> > was known that some companies' drivers for MSWindows were known to
> > fail to keep state straight between calls, but I remember reading
> > some guy who said that even the hardware would lose state in certain
> > situations. And the corruption would tend to be silent, no warnings
> > until it was too late.
> >
> 
> So, some salesman told you something once, you bought into it, found a couple 
> of references on the net that seemed to buttress your hypothesis, and you're 
> suggesting that _I_ google something to corroborate your salesman-informant's 
> theory. I have no doubt that there  could have been problems at times with 
> Master/Slave configurations.

Then why the argument? Wouldn't it be better to post a mini-tutorial
about how you have set up your successful dual-booting master-slave
configurations?

>  Witness the current mess that is the USB 
> protocol. It doesn't seem to me, however, that you have a lot to offer to 
> back up what was a pretty strong assertion on your part.
> 
> > > I have been building my own machines since 1989,.....
> >
> > MSWindows or Linux? BSD? Mac? Controllers limited to certain
> > manufacturers? Did the usage patterns tend to be such that only one
> > drive was used at a time, as in boot and run this drive or that, only
> > use the other drive for backups performed during break? Can you
> > guarantee there was no silent corruption? (regular diffs between
> > backups or such?)
> >
> 
> Again, you seem to want me to buttress your salesman's theory. And that 
> question about "silent corruption" is pure moxy... 
> 
> > > Yet, in all that time, with all those machines, I've never encountered
> > > problems with drive conflicts, except ones I've caused myself due
> > > to improper
> > > jumpering. For the second time in a month on this list, someone has
> > > alluded
> > > to such problems but with no details. What sorts of problems have
> > > you had? I
> > > would like to know in case I encounter such in the future.
> >
> > Like I say, I have not seen drive failures I can pin on this
> > particular issue. What I know is second hand, from the web......
> 
> So, you haven't seen this problem you declared to exist so forcefully, and 
> you've only read about it "second hand, from the web" - My suggestion - first 
> activate brain, then once it's spun up to speed, engage fingers...
> 
> As some one said the other day .net stands for 'not entire true'...
> -- 
> Claude Jones
> Brunswick, MD, USA
> 

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