peter (10/26/82)
#N:hp-pcd:9400003:000:2719
hp-pcd!peter Oct 26 08:07:00 1982
DIALUPS:
"Finally note that you should change the names of any dialup
terminals to ttyd? where ? is in [0-9a-f] as some programs
use this property of the names to determine if a terminal is
a dialup."
Installing and Operating 4.1bsd May 18,1981
page 26
Does anyone know which programs this statement is refering to? Are there any
adverse consequences of putting dialup terminals (modems) on standard tty
ports, say /dev/tty00, provided modem control is properly handled? If there
are, what modifications are necessary to allow more than 16 dialup terminals?
"While it is possible to use truely arbitrary strings for terminal
names, the accounting and noticeably the ps(1) command make good
use of the convention that tty names (by default, and also after
dialups are named as suggested above) are distinct in the last 2
characters. Change this and you may be sorry later, as the heuristic
ps(1) uses based on these conventions will then break down and
ps will run MUCH slower."
Installing and Operating 4.1bsd May 18, 1981
page 26
Can anyone provide more detail as to the specific problems ps(1) has if
dialups do not follow the naming convention?
DISCS:
"The third logical partition of each physical disk also has a
conventional usage: it allows access to the entire physical
device, including the bad sector forwarding information
recorded in the last three tracks. It is occasionally used to
store a single large file system or to access the entire pack
when making a copy of it to another. Care must be taken when
using this partition to not overwrite the last three tracks
and thereby clobber the bad sector information."
Installing and Operating 4.1bsd May 18, 1981
page 4
Is there a way to make a single large file system on hp?c and still
protect the last three tracks? Can the bad sector tracks be protected by
decreasing the value of "size" in "mkfs"? If so, what would be the proper
"size" value for a DEC RM05 disc (hp(4))?
I would greatly appreciate any answers to these questions or tips on where
to find further information.
Thanks,
Peter Robinson
Hewlett-Packard PCD
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