Date: Tue, 13 Apr 1999 15:04:24 +0200 (MET DST) From: Martin Machacek <mm@i.cz> To: freebsd-questions@freebsd.org Subject: copying stuff onto an 'a' partition Message-ID: <XFMail.990413150424.mm@i.cz>
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I've got a (maybe) stupid question. Is there anything special with the 'a'
patition on a disk? I've tried folllowing command on a system running in
singleuser (i.e. the source partition was mounted read-only):
dd if=/dev/rda0s1a of=/dev/rda1s1a
And receveived error message saying:
/dev/rda1s1a: Read-only file system
(i.e it says that the target partition - which was not mounted anywhere - is
read-only)
The da1s1a partition has been newfs'ed just before attempting the dd (which
was probably not neccessary). If I try to mount /dev/da1s1a the mount succeeds
and the mounted filesystem is writable. If I try to dd the block device
(/dev/da0s1a) I receive an error message saying that /dev/da0s1a is
busy (which is true because it is mounted on / ). The interesting part is that
if I try to dd /dev/rsda0s1a on say /dev/rda1s1f it works as expected. However I
need to be able to copy /dev/da0s1a to /dev/da1s1a in order to have a
completely mirorred disk (everything else is being mirrored using ccd). What
I'm doing wrong? Please, mail me directly or Cc me as I'm not subscribed to the
freebsd-questions list.
Martin
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