Using Acronis True Image Home cloned a Windows XP 160Gb system drive to a new 250Gb drive yesterday.

Partition sizes were manually increased during the cloning setup and the new drive appears to be working correctly with no data issues.

However using Manage My Computer then Disk Management 250Gb drive appears as from memory 384Gb with a chunk of unallocate space. Acronis and Easeus however see the drive correctly with correct size/partitions.

Should I be worried about this? Why is windows incorrectly reporting size? and how can this be fixed?

Does Acronis write nonstandard MBR and if so would FIXMBR create a problem?