Clonezilla won't clone to a smaller disk

Officially, Clonezilla requires the destination drive to be the same size or larger than the master drive.

However, it can be done. The issue you are running into is not the size of the disk, but the size of the partition(s). If the sum if the partition sizes are larger than the destination drive, Clonezilla will fail. You need to shrink the partitions on the master drive before running Clonezilla with -icds.

This can be done in a GParted Live environment, or within the OS (depending on setup).

In Clonezilla, choose expert mode and enable the “-icds” option. You need to also  choose the option "Resize partitional table proportionally. "

Alternatively, there are other disk cloning software programs that can do this automatically.