Adds a partition description to a device. The partition description has the form
size1(name1)[ro],size2(name2)[ro],...
<device> is the device name under. Sizes can be given in decimal or - if prefixed with 0x - in hex. Sizes can have an optional suffix K,M,G. The size of the last partition can be specified as '-' for the remaining space of the device.
This command has to be reworked and will probably change it's API.
1.5.6