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Date:      Wed, 05 Jul 2000 14:56:48 -0400
From:      "Michael T. Stolarchuk" <mts@off.to>
To:        Willem Brown <willem@brwn.org>
Cc:        "Michael T. Stolarchuk" <mts@off.to>, questions@freebsd.org, mts@off.to
Subject:   Re: read only file system? 
Message-ID:  <200007051856.OAA24110@off.to>
In-Reply-To: Your message of "Wed, 05 Jul 2000 20:51:05 %2B0200." <20000705205105.F28124@snoopy.brwn.org> 

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In message <20000705205105.F28124@snoopy.brwn.org>, Willem Brown writes:
>Hi,
>
>You got me. It's not mounted or anything like that is it? and what
>is the permissions on /dev/ad1? What happens when you try the raw device
>/dev/rad0 and /dev/rad1

	alpha0# dd if=/dev/rad0 of=/dev/rad1 bs=512k
	dd: /dev/rad1: Read-only file system
	1+0 records in
	0+0 records out
	0 bytes transferred in 0.061746 secs (0 bytes/sec)
	alpha0# 

i think the code which supports slices (subr_diskslice.c)
doesn't want me to write over the disk configuration.
i think disklabel uses a special ioctl to off the EROFS...

before i go digging, or use another system, i thought it was
wise to ask...


mts.


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