You all seem to be misunderstanding something important: "$DISK" is a substitution variable in DS's file naming. It is NOT (part of) a literal name of a backup image file. It has always been that when you backup multiple partitions at once, you can specify a name such as "machinename-$DISK.sna" - then DS will auto-create base filenames of "machinename-C.sna", "machinename-HD1.sna", "machinename-HD2.sna", etc., for each of the actual partitions you have selected to image. If a partition has an assigned drive letter it will use that letter as the $DISK substitution, otherwise it will use the HDn naming convention. Now, when you perform a whole disk restore, you can tell DS to use the same "machinename-$DISK.sna" file spec. DS won't look for an image backup file of that exact name, rather it will enable it to automatically select the correct backup image (i.e, "machinename-C.sna", "machinename-HD1.sna", etc.) for each partition it restores. PS: Also, DS is able to split image backups into multiple chunks of the size you specify. Then it will create a base 'chunk' with the extension .sna, with further chunks as .sn1, .sn2, .sn3, etc. as needed, depending on the total size of the image. If you are backing up to a drive formatted as FATxx, you would tell DS to use a 4GB maximum chunk size.