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Date:      Sat, 28 Mar 1998 17:20:18 +0100 (MET)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        hackers@FreeBSD.ORG
Subject:   UFS changes in 2.2.6 ?
Message-ID:  <199803281620.RAA18227@labinfo.iet.unipi.it>

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Some time ago, just to see how it worked, I dumped the content of a
ufs partition on a CD, and was then able to mount it using

	mount /dev/wcd0c /mnt

i.e. as an UFS file system. Things were not perfect since I could crash
the machine relatively easily by doing  tar cvf /dev/null /mnt , but at
least the disk was mounted.

Today i was trying the same thing on a diskless 2.2.6, and the mount
command replies "/dev/wcd0c on /mnt: Input/output error".

What has changed to prevent the mount ? The disk is readable (using dd
etc.).

Being able to mount a cd as UFS partition is quite useful for doing
backups, since you don't need the space (and the time) to create a
temporary ISOFS image. With CDROM being cheap as they are, this is a
real plus.

	Cheers
	Luigi
-----------------------------+--------------------------------------
Luigi Rizzo                  |  Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it    |  Universita' di Pisa
tel: +39-50-568533           |  via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522           |  http://www.iet.unipi.it/~luigi/
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