joel@milton.u.washington.edu (Joel Reynolds) (10/02/90)
I accidently installed win/3b tcp/ip release 2.1 without prior removal of the files from release 1.1. Now when I try to boot the system it crashes due to the conflict created by the two sets of tcp/ip software. Does anybody know of a method by which I can boot the machine but only to single -user mode? This way I would avoid the problem created by the conflicting tcp/ip software as it would not be initialized. Please help if you know of any information. I am supposed to teach in this lab tomorrow! Can someone tell me about a so called 'magic mode'? Someone mentioned it to me as a possible solution but they can't remember how it works. thanks Joel Reynolds Center for Quantitative Science Univ. of Washington, Seattle email: joel@cqs.washington.edu
jgy@cbnewsh.att.com (john.g.young) (10/03/90)
In article <8413@milton.u.washington.edu>, joel@milton.u.washington.edu (Joel Reynolds) writes: > > I accidently installed win/3b tcp/ip release 2.1 without > prior removal of the files from release 1.1. Now when I > try to boot the system it crashes due to the conflict created > by the two sets of tcp/ip software. > > Does anybody know of a method by which I can boot the machine but > only to single -user mode? This way I would avoid the problem created > by the conflicting tcp/ip software as it would not be initialized. > If you are booting /etc/system and it crashes before the message "Generating a new /unix" comes out you can probably just boot /unix to get your old O.S. If this fails boot on /boot/KERNEL and be ready to specify your system configuration!
ziegler@mtunf.ATT.COM (Joe Ziegler) (10/10/90)
In article <1990Oct3.150507.22097@cbnewsh.att.com>, jgy@cbnewsh.att.com (john.g.young) writes: > In article <8413@milton.u.washington.edu>, joel@milton.u.washington.edu (Joel Reynolds) writes: > > > > Does anybody know of a method by which I can boot the machine but > > only to single -user mode? This way I would avoid the problem created > > by the conflicting tcp/ip software as it would not be initialized. > > > > If you are booting /etc/system and it crashes before the > message "Generating a new /unix" comes out you can probably > just boot /unix to get your old O.S. > > If this fails boot on /boot/KERNEL and be ready to specify your system > configuration! Or use magic mode. For those of you who don't know of it, do this: - Get out your installation tape or the first floppy of your installation set. - Boot from the floppy/tape. - When it gives the menu fo full restore, partial restore, etc., enter "magic mode". - The system says "POOF", and you now have two extra choices, one of which is shell. Choose shell. - You are now in single-user mode, running from the tape/floppy. Mount the hard-disk root partition as /mnt, and change the initdefault line in /mnt/etc/inittab. - Unmount the hard disk and reboot. This approach can be used for many problems. It may be helpful to mount /usr from the hard disk, as well as root, and set up your path so that you can access all the tools on the hard disk. Are you a little nervous now about letting people have physical access to your 3B2? Good! Joe Ziegler AT&T Bell Laboratories West Long Branch, New Jersey att!mtunf!ziegler