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From: ray@ariel.ucs.unimelb.edu.au (Douglas Ray)
Newsgroups: comp.os.minix
Subject: AT hd3 fails as ram image device
Keywords: MM panic
Message-ID: <605@ariel.ucs.unimelb.edu.au>
Date: 1 May 91 12:42:00 GMT
Article-I.D.: ariel.605
Sender: ray@ariel.ucs.unimelb.edu.au
Organization: University of Melbourne
Lines: 40


I'm installing 1.5.10 on a 286 AT with 40M rodime HD, 1M ram.
Untouched PH distribution.   Partition details appended.

Using the AT boot floppy, I can use /dev/hd3 as a root device,
but not as the default RAM image device:  I get

	Memory manager panic: not enough memory for RAM disk
	Executing in real mode

and then either a reboot or a hang.

I've tried making the (hd3) /dev/ram as 510k, 400k and 130k;
the actual partition size of hd3 is 510k, and just contains the
inital vanilla root disk files.

Has anyone seen this problem or know what's happening?

						- douglas ray
						networks & comms

partition details:
                |-first--|  |--last--|  |----sectors----|   blocks
                Cyl Hd Sec  Cyl Hd Sec  base   last  size    size
1 1  A  DOS-16    0  1  1   574  5 16      17 58648 58632   29316
2 2     MINIX   575  0  1   808  5 17   58650 82517 23868   11934
3 3     MINIX   809  0  1   818  5 17   82518 83537  1020     510

No bad blocks.

after mkfs (before /etc/setup_root):
              |---inodes---|   |-----blocks----|
              tot  used free   total  used  free
   /dev/hd2   3986  1   3985   11934  131  11803
   /dev/hd3    178  1    177     510   11    499

after "/etc/setup_root /dev/hd3 510 29316 11934 510 0":
              |---inodes---|   |-----blocks----|
              tot  used free   total  used  free
   /dev/hd3    178  67   111     510   126   384