System Drops to manual mount root prompt after HDD duplication

[David Cramblett]

Dag-Erling Smørgrav wrote:
> David Cramblett <david at functionalchaos.net> writes:
>> My FreeBSD 5.2.1 server had a 4.5 GB HDD.  I decided to upgrade it
>> with a larger drive.  I installed a new drive on the second IDE
>> channel which made it ad2, of course, my original drive was ad0. I
>> created a partition, boot loader and matching slices on the new drive.
>> Then I copied the old drive to the new drive using tar.  Once
>> finished, I removed the original drive and installed the new one on
>> the primary channel.  When I booted up everything appeared normal, but
>> when the system starts to mount "/" it gives no error or warning and
>> just drops to a "Manual mount root specification" prompt.  If  I type
>> "ufs:ad0s1a" it boots up and everything is perfect.  This is the same
>> slice "/" was on the old drive as well.
> 
> What's in your /boot.config and /boot/loader.conf?
> 
> DES

I have no boot.config.


[root at www /]# cat /boot/loader.conf
# -- sysinstall generated deltas -- #
userconfig_script_load="YES"


I also tried an option I found while searching for a solution

root_disk_unit="0"

although that did not help.

David