Lost partition, HELP!

[Arty]

Hi.

Something very strange just happened and I would like an advice from some advanced freenas user before I do something irreversible. I had 4 HDDs in my FreeNAS box and today I decided to add one more 250GB disk... everything went well, as usualy. But, since I'm starting to have too many disks to remember what data they hold, I changed the default Description for drive number 4. (under drive management). Added and formatted the new disk. Now I'm going to set the mount point for my new disk... and I saw something terrifying under mount point management:
/dev/da3p1 ufs devel
Error - Retry
This is the old disk with the new, changed description. When I open it up, it gives me the following error:

The following input errors were detected:

Wrong partition type or partition number.

So what happened to my partition and precious data? How do I get it back? Please help!

[raulfg3]

http://wiki.nas4free.org/doku.php?id=faq:0074


See references too.