dynamic hdd ?

I have a HDD which is in my device manager and bios etc but not in my computer, it is classed as inactive but i can not reactivate it as it gives some weird error message about missing magic numbers although it is named as a dynamic hdd and all my other hdd are named as basic, this drive worked the other day fine but since a virus scan and qurantine mission it hasnt. do i need to change it to a basic hdd and if so how do i keep data thats on their someone please help, cheers

 

To convert a dynamic disk back to a Basic disk you first have to delete all volumes on the disk. See the following:

http://support.microsoft.com/kb/314343/en-us

 

Or this:

http://support.microsoft.com/kb/309044/EN-US