On Wed, Jan 5, 2011 at 12:44 AM, Ian Smith <smi...@nimnet.asn.au> wrote:
> > Saw Chris' later message that -F isn't there for him, but here's what > should be, on the data, the sure-fire way to clobber that last sector: > > dd if=/dev/zero of=/dev/ad4 oseek=1465149167 > > which command SHOULD report just 512 bytes written (we're sure it can't > write past the end of the disk with no count specified), after which: > > dd if=/dev/ad4 iseek=1465149167 | hd > > SHOULD show zeroes from 00000000 to 000001ff (ie next block 00000200) > If not, there really must be some hardware issue with writing? > > Hopefully getting there! > > cheers, Ian > [..] Fixit# sysctrl kern.geom.debugflags=16 kern.geom.debugflags: 0 -> 16 Fixit# dd if=/dev/zero of=/dev/ad4 oseek=1465149167 dd: /dev/ad4: end of device 2+0 records in 1+0 records out 512 bytes transferred in 0.0100001 secs (51195 bytes/sec) Fixit# dd if=/dev/ad4 iseek=1465149167 | hd 1+0 records in 1+0 records out 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 512 bytes transferred om 0.009863 secs (51912 bytes/sec) * 00000200 Fixit# [..] restarting and back to sysinstall from BETA1 is nice dice ... same original error ... can I just zero the whole drive? _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"