How to create partitions on My Book Live?

michaelJ wrote:

What’s your OS is ? If your OS is windows 7/vista/2008 you could use the built-in Disk Management to do this, but there’s also some limitation on it . I always use the third-party partition manager to solve this problem, If you need, you could free download it from net.

As Tony says, that tool won’t work at all as it is for NTFS, FAT and FAT32 drives while the MyBook Live is EXT3. Also that tool does not support NAS drives, only local drives.