FreeBSD hangs on boot

I have a disk with FreeBSD 10.2-RELEASE

Whilst booting it hangs with the message:
Code:
ada0: Previously was known as ad0
How do I go about debugging this?
 
That message has nothing to do with it. It's probably just the last message that was printed.

Please provide some information, like what system? What hardware?
 
That message has nothing to do with it. It's probably just the last message that was printed.

Please provide some information, like what system? What hardware?

It was an IDE disk in a laptop. Seems like it must have been intermittent since it has since booted up OK
 
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