|Choose "Start Clonezilla"|
If you choose "Expert" mode, you will have some chances to choose advanced parameters, e.g. tune the CHS values of target disk, how to create partition table on the target disk, etc.. You can see more details here.
///NOTE/// By deafult, Clonezilla will clone the "same" size of source disk to target disk. i.e. in this example, only 8 GB will be cloned to target disk, so the rest of 12 GB on the destination disk will be unallocated. If you want to make use all of the target disk size, remember to enter "Expert" mode and choose option "-k1".