we did this this morning.
if you have multiple diskS on your source server, image both the disks (lets say you have 2 disks), then before running converter, put
both the images onto the server you are running vm converter from, into its own directory.
then when using vm converter, when it asks you for your source image, select only the C: drive image, by the time you get the option to resize the disks, you will see both disks available.
When you have got the vm running, check the disks to make sure they have the same mappings to the source server ,we have had issues where source config is
c: drive
d: cd-rom
e: data
after vm convert - ended up with
c: drive
d: data
e: cd-rom