Path: utzoo!attcan!uunet!mcvax!hp4nl!ruuinf!edwin
From: edwin@ruuinf.UUCP (Edwin Kremer)
Newsgroups: comp.os.minix
Subject: Re: ATARI ST Megafile 60 problems.
Summary: Some suggestions and more ....
Message-ID: <1061@ruuinf.UUCP>
Date: 24 Jan 89 15:08:25 GMT
References: <7125@louie.udel.EDU>
Organization: Univ of Utrecht, Dept of CS
Lines: 49


  In article <7125@louie.udel.EDU>, Ryko Prins, CRI, Leiden, Netherlands writes:
  > A couple of weeks ago I privately bought Minix-ST. Using the manual I
  > could successfully install it on my Mega 2's 20 Mb Atari SH 204 drive,
  > in a way that it wasn't depending on floppy disks (MINIX.IMG
  > + 1Mb hd3 + 8 Mb hd4). (By the way did you know that if you boot from hard
  > disk that way you cannot use your floppy disk drives anymore? To be able to
  > use floppies you have to boot from floppies).
This *really* can't be true. I understand you have /dev/hd1 and /dev/hd2
for TOS and hd3, hd4 for MINIX. But, how do you load the RAM disk, or are
you using a patched MINIX version that has its root filesystem on hard disk ??
My situation is this:
	SH205: (same for SH204)
		/dev/hd1	TOS	3 Mb
		/dev/hd2	MINIX	2 Mb 	/	root filesystem
		/dev/hd3	MINIX  10 Mb	/usr	usr filesystem
		/dev/hd4	MINIX	5 Mb	/tmp	temporaries

I don't use RAM disk. It's no problem to access /dev/fd0 and/or /dev/dd0.
Don't you forget to mount them ??? Use the right type fd0 / dd0 ????

 > I noticed the boot block of the hard disk partition was zeroed by an unknown
 > cause, so I couldn't access it with any TOS hard disk utility as well.
Which is fully correct, compare it to the UNIX filesystem:

	block 0 - boot block
	block 1 - superblock
	etc
Since this partition is surely not a boot device, the boot block is
unused and therefore zeroed. Check the source of mkfs and you'll see.

 > The only I could think of was to make a backup of my TOS partitions,
 > reformat the hard disk, restore my TOS partitions, and try to make a minix
 > filesystem again. When I did that, I got error messages, and minix did'nt
 > even access the hard disk (the disk activity light didn't come on).
 > I tried /dev/hd4 instead of hd3 with the same result. Both partitions
 > can be accessed from TOS, so that rules out hardware errors.
All special devices in /dev set up correctly ??? Hard disk partitioned
correct using TOS utility ??? Correct sizes of partitions ????

Well, that's all I can come up with right now. I've experience with
both SH204 and SH205. A colleague of me uses a Megafile 60 partially for
MINIX. No problems at all !!!!
							--[ Edwin ]--
-- 
Edwin Kremer, Department of Computer Science, University of Utrecht
Padualaan 14,  P.O. Box 80.089,  3508 TB  Utrecht,  The Netherlands
Phone: +31 - 30 - 534104        |  UUCP    : ...!hp4nl!ruuinf!edwin
    "I speak for myself ..."    |  INTERNET: edwin@cs.ruu.nl