On Tue, Oct 28, 2008 at 10:21:00AM +0000, Bullet 446 wrote: > I have a remote machine with KVM access that I'd like to format and > reinstall FreeBSD 7.0. I've succeded in formatting /dev/ad6 but not the main > drive, /dev/ad4. > Is it possbile to zero-fill format during the installation instead of simply > deleting and recreating partitions? > > I've tried booting into single user mode without any success: > # umount -a > umount: /cdrom: not a file system root directory > umount: /var: not a file system root directory > umount: /usr: not a file system root directory > umount: /tmp: not a file system root directory > # dd if=/dev/zero of=/dev/ad4 > dd: /dev/ad4: Operation not permitted
You need to tell GEOM to allow you to overwrite the MBR at the start of the disk. sysctl kern.geom.debugflags=16 then do the dd again. I STRONGLY recommend you add "bs=64k" to that dd statement, or else it's going to take a million years. :-) -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"