returning to 8.2 from 9.0
joh.hendriks at gmail.com
Sat Sep 10 19:10:39 UTC 2011
> Have test pc. Been running 8.2 just fine. Installed 9.0 from cd and
> after playing around tried to reinstall 8.2. Got error about GTP table
> while trying to setup the HD. Used 8.0 livecd to
> "dd if=/del/zero of=/dev/ad0 count=5 to wipe the start of the HD clean.
> Now 8.2 install issues this msg
> GEOM: ad0: the primary GPT table is corrupt or invalid.
> How do I fix the HD so 8.2 will install?
> freebsd-questions at freebsd.org mailing list
> To unsubscribe, send any mail to
> "freebsd-questions-unsubscribe at freebsd.org"
maybe this little script helps you.
It helped me in several situations.
If that does not do the job, you could try dban disknuke that will wipe
the disk completely
More information about the freebsd-questions