Increasing VSS shadow copy space

I need to increase the VSS shadow copy space to unlimited in a server with three drives - C,E and X
C (44GB free of 195GB),
E (351GB free of 1.14TB)
X (285GB free of 488GB)

According to Microsoft Technet, this is the syntax I need to use
vssadmin resize shadowstorage /for=<ForVolumeSpec> /on=<OnVolumeSpec> [/maxsize=<MaxSizeSpec>]

So is this the correct syntax for my C, E and X drives?

vssadmin resize shadowstorage /for=C: /on=C: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=C: /on=E: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=C: /on=x: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=E: /on=E: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=E: /on=C: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=E: /on=X: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=X: /on=X: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=X: /on=C: [/maxsize=<UNBOUNDED>]
vssadmin resize shadowstorage /for=X: /on=E: [/maxsize=<UNBOUNDED>]