Summary:Re-creating the ROOT disk

From: Tony R McKenzie (
Date: Wed Jan 03 1996 - 09:46:41 CST

Hi y'all,

        I thought I'd summarize, at least to prevent any further responses,
which has been quick, immense and thoroughly informative. Many thanx.

        In short:-

        i) The consensus of opinion was that the dump/restore combination
proved the most popular copying technique suggested.
                   Unfortunately, my earliest experiences with these
commands were such that I ended up spending an inordinate amount of time
rewriting backup scripts to include tar instead. This in turn was to
combat a mass of user sourced complaints because I was unable to
guarantee the recovery of lost files.
                Mind you, this was involving tape media and it was suuuuucchh a long
time ago that both media and commands could well be as robust as I would
expect them to be...;^}

       ii) dd was suggested - I'm sceptical about this one, mainly
because the speed "swing" gained is generally lost to the validation
"roundabout"; e.g. crapped-on files would be copied over verbatum,
mapped out block info also (might be a significant factor if space is a
premium). In fact, if the HDD failure was down to a grotty file, all one
would be doing is copying the problem over to the second HDD.
                I prefer cpio (or tar, for that matter) because at least
_some_ file integrity checks are carried out, which warrants an A+ for
this type of exercise - plus I've gotten used to it now.... :0}. Also a
very good cure for a pretty much fragmented HDD.
      iii) There was a response that had tried tar without success and
another that insisted that gtar be used _instead_ of tar to
guarantee success.
                Any gurus out there that could let me in on as to why..? I've carried
out similar exercises in the past using tar, with a high degree of
success. Surely it's not one of those OS dependant thangs?

       iv) There were some responses that suggested that I might have to
recreate my device files - I've never had that problem before. If I do
suffer from this syndrome I'll be sure to let y'all know.

        v) Finally, nearly all responses stated that what I needed was the
installboot command - methinks that this was what I was after.

        Please don't flame me if any of my comments seem out of place - I'm

        Big thanx to:
       (Alan McKay)
                Sean Ward <>
       (Ron Spillane)
                "Patrick L. Nolan" <pln@egret1.Stanford.EDU>
       (Mike Daffey)
                Jens Fischer <>
                George L Roman <>
       (Anthony Worrall)
                Anderson McCammont <>
       (Franz Heinrich)
       (Jeff Wasilko)
       (Tim Evans)
                "Lyle E. Miller" <>
       (Mike Salehi)
                and any one else of whom has responded since I mailed this reply....

Good Luck


This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:10:50 CDT