i would like to remember you that, although "there isn't a Law for bla, bla", whatever you call your boot partition, SYS: is good as well.
No one call it SYS: but if you type SYS: in a shell, you will find you boot partition name . . . whatever its labeled.
EDIT just to be more precise:
"assign Wokbench:Samba" - is good ONLY IF your boot partition is labeled Workbench
"assign SYS:Samba"- is good for all