Forgot partition after installing time…: Apple Support Communities
Bob Timmons has the answer. Great work.
The information in this video talks about a partition on the fellow’s Maxtor external hard drive…..not the Time Capsule.
As mentioned previously in this thread…..it is not possible to “partition” the Time Capsule drive unless you physically remove it from the Time Capsule case….which will void the warranty.
If you want to reserve a given amount of space on the Time Capsule drive, you can set up a disk image, which is similar to a partition.
via Forgot partition after installing time…: Apple Support Communities.

