SUMMARY: Read-only root partition

From: George Papadimitriou <george_at_CMA.MGH.Harvard.edu>
Date: Wed, 24 Mar 1999 16:17:15 -0500 (EST)

Hi everybody,

> When I boot my DEC3000/300X to single-user mode, the root partition is
> mounted read-only. How can I change that?

1. /sbin/mount -u /
   The -u flag will take care of the trick
2. /sbin/bcheckrc
   This program will mount all local file systems listed in /etc/fstab

Any changes need to be flashed to the disk, using sync or /sbin/update
which starts up a daemon to do so in the background every 30s.

> When my DEC3000/300X is hang, how can I halt the system, and get to
> the console mode, without having to turn off the machine?

There is a black button in the back of the computer, which does exactly
that.

> What configuration changes are necessary, so that my networked
> DEC3000/300X will boot up as non-networked standalone?

The main place that requires changes is /etc/rc.config; there's a
bunch of boolean variables that need to be updated (some of them
need to be set to "NO", and some to null ""). Change the ones that
refer to NIS/NFS/automount, etc.

For example:
cp /etc/rc.config /etc/rc.config.bak
- set IFCONFIG_0=""
- set BIND_CONF="NO"
- set NIS_CONF="NO"
- set NFS_CONFIGURED="NO"

(you could also unset anything that refers to NTP )

mv /etc/routes /etc/routes.bak (if applicable)
cp /etc/svc.conf /etc/svc.conf.bak

Finally, comment out the NFS entries from /etc/fstab

Thanks to:
Dave Wolinski <wolinski_at_umaxp1.physics.lsa.umich.edu>
"MacDonell, Dennis" <DennisMacDonell_at_auslig.gov.au>
"Tri H. Tran" <thtran_at_hydra.acs.uci.edu>
Jim Belonis <belonis_at_dirac.phys.washington.edu>
Ian Mortimer <ian_at_physics.uq.edu.au>
Andrew Busch <a.busch_at_qut.edu.au>
wmills_at_wellsfargo.com
"Degerness, Mandell ITSD:EX" <Mandell.Degerness_at_gems2.gov.bc.ca>
Serge Munhoven <Serge.Munhoven_at_mema.ucl.ac.be>
Jim Fuller <Jim.Fuller_at_ntl.com>
"John Robens" <jrobens_at_davidjones.com.au>
"Sean O'Connell" <sean_at_stat.duke.edu>
Girish Phadke <pgirish_at_maxisnet.com.my>
Sophia Liow <Sophia.Liow_at_cmis.CSIRO.AU>
hwong_at_asl.com.hk (Homer Wong)
Qingbo Wu <wuqb_at_nudt.edu.cn>
robert_at_gnsconsulting.com.au
"Brenda S Ramsey" <bsramsey_at_hti.com>
"Warren, John H." <JHWARREN_at_escocorp.com>
"Catalin H. Ciontu" <Catalin.Ciontu_at_paginiaurii.ro>
maurerf_at_post.ch
"Wolf Dieter Brandt" <wolf_at_libra.chaos.gwdg.de>
Kjell Andresen <kjell_at_dod.no>
"Luff, Neil I" <Neil.Luff_at_capgemini.co.uk>
Gerhard Nolte <gnolte_at_gwdg.de>
Alan Garde <alan.garde_at_transport.uk.eds.com>
"Emil L. Dragic" <emil_at_mobtel.co.yu>
Peter Reynolds <PReynolds_at_synstar.com>
Joe Fletcher <joe_at_meng.ucl.ac.uk>
Chris Glenister <C.Glenister_at_cranfield.ac.uk>
rye_at_jwfc.acom.mil
Trevor Stott <stott_at_dathomir.sheridanc.on.ca>
Oisin McGuinness <oisin_at_sbcm.com>
"Leonard, Roger" <rleonard_at_cvty.com>
Alan Angulo <alan_at_esu.edu>
Caprica7_at_aol.com
Bryan Lavelle <Bryan.Lavelle_at_digital.com>
"Larry A. Magnello" <Larry-Magnello_at_ouhsc.edu>
John Francini <francini_at_nashua.progress.com>
"Thomas M. Payerle" <payerle_at_physics.umd.edu>
Nigel Gall <nigelg_at_ppsl.com>
Ryan Ziegler <Zieglerr_at_novachem.com>
Mahinder Kumar <mahinder_at_gto.net.om>
Simon.Millard_at_barclays.co.uk
Darek Kedra <Darek.Kedra_at_cmm.ki.se>
"Douglas C. Stephens" <stephens_at_ameslab.gov>
Received on Wed Mar 24 1999 - 21:19:55 NZST

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:39 NZDT