[comp.sys.nsc.32k] bootstrapping Minix

bdale@relay.hp.com (Bdale Garbee) (10/29/90)

Hi.  This is mostly directed to Bruce, but since others might benefit from
the feedback, I decided to post here.

I am right now installing Minix on my pc532 on a 20meg HP Nighthawk mech,
which is utterly incapable of operating on my workstation.  So, I decided to
give the serial download process a whirl.

Bruce, your Install document is fantastic.  But, I ran into a few gotchas.  In
section 3, just before the line "Now, cross your fingers and type "run".", you
need to do a 'set bkpt0 0', at least on my rev of the monitor, otherwise you
keep getting the breakpoint msg.  

In section 4, the partition table had moved... no problem since I checked the
minix.nm file...

In section 5, you remark that compress should be linked to uncompress and zcat.
The ln binary is not on your minimal system.  When I tried to do 

	ncat /dev/hd3 400818 | compress -d > lib.tar

I got a message about "stdin: no in compressed format".  However, when
I ran

	ncat /dev/hd3 400818 > lib.tar.Z
	compress -d < lib.tar.Z > lib.tar

Everything worked fine... I'm downloading the second of my .tar.Z files
now...

Why, oh why, didn't you include kermit on the minimum filesystem?  This
download/boot/unpack/reboot/repeat is really slow... guess if I was smart
I would have downloaded just kermit, and used kermit to transfer the
rest?  Nah, too easy...  :-)

Also, I'm getting frequent messages about SCSI timeouts when doing large
amounts of file operations.  This disk is *slow*, is there any chance
I just need to extend the timeout time?  Seems odd, but...  The errors
are non-fatal, since the first retry seems to work.  These crop up one
at a time every so often during a long operation, such as:

# compress -d < lib.tar.Z > lib.tar
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
SCSI: timeout
SCSI failure, key 0x5, code 0x24, log adr 0x0, sense buf 0xC462
# tar t lib.tar

Bdale