Broken Disk

[Jason Dusek]

Hi,

I am trying to put a new disk on my system. I read the description of 
the process in FreeBSD Unleashed and apparently I misunderstood it, 
because I ended up installing a boot manager on the new disk. Now I can 
not mount it - I get error messages like:

# mount /dev/ad1e /mnt/backup
operation not permitted

How do I 'start over'? I have tried to add this disk many times with 
/stand/sysinstall. Eventually I gave up and went to the command line 
utilities as outlined in the handbook. The error I got was interesting, 
but I have no idea what it means:

# fdisk -BI ad1
******* Working on device /dev/ad1 *******
fdisk: invalid fdisk partition table found

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