Hi Guys, I am trying to create a partition on my internal HDD on 10.4.11. I have tried two ways. Terminal way $ diskutil partitionDisk disk0s3 1 HFS+ rigantaHFS+ 15G - That returned an error ( i would say plausible) " couldn't unmount disk for zeroing" " couldn't unmount disk (-1000) on disk0" - i did try the same command line in single user mode but that did yield anything at all. I got the same error message. Disk Utility (/applications/utilities/diskutility) - I basically cannot partition my internal HDD without erasing my the entire HDD - So my question is :"how to create another partition on my HDD, without erasing the entire HDD?" I am using a PPC with tiger 10.4.11 PS: the reason why I am not using the disk utility on the install DVD is that I have lost them.