Date: Wed, 29 Dec 2010 14:57:49 +0000 From: Paul Wootton <paul@fletchermoorland.co.uk> To: Chris Brennan <xaero@xaerolimit.net> Cc: freebsd-questions@freebsd.org Subject: Re: a new hard-drive in a 2y/o laptop Message-ID: <4D1B4C6D.6090303@fletchermoorland.co.uk> In-Reply-To: <AANLkTin3Ov_ZN3W0NW28csGE1YzQiR_YYbXyLyczmOjc@mail.gmail.com> References: <AANLkTimNwCqF%2Bp0SG_oTNwT5TjOFyEHsFAGusj9dOn5X@mail.gmail.com> <ifc34c$ld5$1@dough.gmane.org> <AANLkTin3Ov_ZN3W0NW28csGE1YzQiR_YYbXyLyczmOjc@mail.gmail.com>
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On 12/28/10 16:02, Chris Brennan wrote:
>> Boot a LiveFS CD, then at a root prompt do:
>>
>> sysctl kern.geom.debugflags=16 and:
>>
>> dd if=/dev/zero of=/dev/adx oseek=1 bs=512 count=1
>>
>> where x equals your drive number. This will zero out any old MBR.
> [..]
> <GARBAGE>Invalid partition tableError loading operating systemMissing
> operating system<GARBAGE><GARBAGE><GARBAGE>1+0 records in
> 1+0 records out
> 512 bytes transferred in 2.712151 secs (189 bytes/sec)
> [..]
Hi Chris,
Are you sure that you got the command right when DDing
If you saw "Invalid partition tableError loading operating
systemMissingoperating system", that suggests to me that you had the
equivalent of
dd if=/dev/ad4 oseek=1 bs=512 count=1
Here is what I get is I run that DD command on a Windows HDD
"demophon# dd if=/dev/ada2 bs=512 count=1
3Àм|ûPPü¾¿W¹åó¤Ë½¾±8n| uÅâôÍ▒õÆIt8,tö µ´ð¬<tü»´ÍëòNèFs*þF~
t
~
t ¶uÒFV
è!s ¶ë¼>þ}Uªt
~tÈ ·ë©üWõË¿VÍr#Á$?ÞüC÷ãÑÖ±ÒîB÷â9V
w#r9s¸»|NVÍsQOtN2äVÍëäV`»ªU´AÍr6ûUªu0öÁt+a`jjÿv
ÿjh|jj´BôÍaasOt
2äVÍëÖaùÃInvalid partition tableError loading operating
systemMissing operating system,Dcéêþÿÿ?Á¥P Uª1+0 records in
1+0 records out
512 bytes transferred in 0.363712 secs (1408 bytes/sec)
demophon# "
Paul
help
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