Acronis True Image WD Edition grays out destination disk

I had the same issue.  Even tried creating a boot CD with Acronis WD edition so I wouldn’t be booting off the source drive at all and Windows isn’t even there to interfere with the destination drive.  Same result, destination drive is greyed out.  It didn’t matter if the new drive was unallocated/unpartitioned or partitioned or partitioned+formatted NTFS.  I found a thread on the Acronis forums about this bug and the person bought the full Acronis version and ran into the same bug as in the WD edition.  They got around the bug by avoiding the “clone” feature and doing a backup to an external drive then restoring the tib file to the new disk.  That worked for me, the restore feature didn’t grey out the destination disk as the clone feature did.

http://forum.acronis.com/forum/23619