[macosx-unix] getting at the cd device file, and eject

George Georgalis george at galis.org
Fri May 11 14:57:52 EDT 2007


So I have this nice audio cd in my powerbook.

when I tried to read the /dev/disk1 file with dd (it
was auto mounted, and I used df to determine the
device node), I got
dd: /dev/disk1: Resource busy
I thought that was odd for read only media, but I
did sudo umount /dev/disk1 and tried to read it
again with dd.

same error, hosed system required reboot.

So, how do I use dd to read a cdrom? eg to make an
iso file? and is there a way other than reboot to
fix a system (or at least eject) with a umounted
cdrom?

// George


-- 
George Georgalis, information systems scientist <IXOYE><


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