problem med mirror

Jeg har en server ver. 4.2 der spejler, men når jeg tager den primære disk fra, for at bruge spejlet som ny primær disk, kan jeg ikke få vist volume information og får følgende fejl:

The partition table on drive 1: appears to be invalid. It is possible that you have not chosen the correct driver. If valid data does exist on this drive, and you do not want it destroyed, indicate “No” in the Confirm Box that follows this message.

Warning: If you indicate “Yes” to recreating the partition table, all existing partitions (DOS partitions, Netware partitions, etc.) will be deleted and all existing disk data will be lost. (install-4.2-220)

bortset fra denne fejl ser alt ellers normalt ud