*BSD News Article 93961


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Hard Disk Maintenance
Date: 19 Apr 1997 17:52:21 GMT
Organization: Private BSD site, Dresden
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haggis@cesium.com (John R. Haggis) wrote:

> I have a 4.4BSD manual, but some of the commands (format, scsiformat) 
> don't appear to be in FreeBSD.

scsiformat(8) is there, although we've thrown away the old 4.4BSD
code, and replaced it by a shell script. :)

But you don't need it anyway.

> 1.  Read the old partition size info, so I know how to partition the 
> new disk (fdisk doesn't do it;  just shows one big partition).

disklabel

> 2.  Partition the new disk (including sub-partitions?).

disklabel

> 3.  Do I need to format the partitions, or is that what newfs does?

newfs does.

> 4.  Do I even need to newfs, if I'm doing dump | restore?

You need.

> 1.  I seem to automagically have a /dev/rst0 device.  Is that the 
> right one for this tape drive?  I have no other st devices in /dev.

Yep, it's the right one.  There should be more devices like
/dev/rst0.1 etc.  They are subdevices for different densities, but you
don't need them on DAT.

> 2.  How do I format the DAT tapes?  (No "format" command on my 
> system.)

You don't format a DAT medium at all.  Only cheap tapes need to be
formatted.

> 3.  If I dump "/", will it dump my other mounted partitions, or do I 
> have to dump them separately?

Since dump works on a per-filesystem basis (and by reading the raw
device), it'll only dump the / filesystem.

> 4.  If separately, how do I dump multiple partitions onto one tape?  
> (I have 2GB tapes;  no problem with space.)

You use the non-rewind device, /dev/nrst0.  After this, type ``mt
rewoffl'', and the tape will be rewound and ejected.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)