Is the Foreign drive in the Data Virtual Disk that is inaccessable?
Please confirm that the data is inaccessable. If it isn't, then go to the controller BIOS (Ctrl-R prompt during boot)
From there highlight the Virtual Disk that has the foreign drive, hit F2 and then select Foreign Configuration. The select to IMPORT FOREIGN CONFIGURATION. This should cause the drive to rebuild.
If the Virtual disk with the foreign IS accessable then you will want to go to the same place and select Clear Foreign instead of importing.