|Re: Copy Lif disk (disk copy) Help !!!|
Message #14 Posted by Howard Owen on 10 Oct 2005, 11:53 p.m.,
in response to message #13 by Vassilis Prevelakis
> That hole is the Quad Density hole it has NOTHING to do with
> sides. The behavior should be the same with both DS/DD and SS/DD
This is true no matter what kind of noise your drive makes or in fact whether by pure chance your drive happened to work that particular time when you ejected the disk and then placed it back into the drive.
It seems to me you've made several wrong assumptions, Vassilis. First, I know the difference between quad vs double density and 2 vs 1 sided media, and I don't care!. I'm describing a result I obtained, that's all. That brings me to your second erroneous assumption: because the result seems incredible to you, you assume I tried this once then shot my mouth off. Let me disabuse you of that notion. I was copying from both single sided/double density and double sided/quad density (HD) disks. I had two HD disks that I had written SS?DD data to, one in a 9114 and one in a 9121. The former is a work disk for my HP-71B efforts, and the latter a copy of the HP BASIC 2.0 for 200 series (RMB) system disk I had made in the 9121 from my 9816. While copying various images to and from these two disks, and various others, I got the following results:
Disk Drive OS sw w/wo cover result
Work disk 9114 Slack lifimage without failure
Work disk 9114 Slack lifimage with success
HP BASIC 9121 MS-DOS teledisk without failure
HP BASIC 9121 MS-DOS teledisk with success
The hardware was identical in both cases. The Compaq Deskpro 575 is an early Pentium machine that actually sports a couple of PCI slots. It has a Compaq custom BIOS that you need a floppy disk to access. The floppy drive is described as "tri-mode" somewhere in the literature I read when I first got the system. I've updated the BIOS to its final release level, circa 1995.
That's two discs I tried this on, running two different OS, and (necessarily) two different image copy programs. Do you detect a pattern in this data? I repeated the test twice for each disc, not because I was trying to be scientific, but because I had a hard time believing it. I don't know why it works like that. I don't care why it works. I just now know how to read and write images on this hardware. I couldn't do that before because I was missing this piece. No wonder it was missing! It doesn't make sense to me, but there you are.
So forgive me for interpreting your incredulity for an implication that I am stupid I would be stupid if I had gone about this in the way you seem to think I did.
Edited: 11 Oct 2005, 12:52 a.m.