I bought this Seagate external 3TB drive to use exclusively with my iMac via FireWire 800. I already have a drive tower from Wiebetech which accepts bare SATA drives, so I removed the Seagate 3TB SATA drive from the external case and put it into one of my drivebays. OSX says the disc is unreadable and needs to be initialized. Fine by me, and expected, since it supposedly comes pre-formatted for NTFS. But when attempting to partition it with Disk Manager, the maximum partition size is 800 and some GB, not 3TB. Does some kind of special proprietary driver have to be loaded? Is this possibly a 32-bit only driver, since the box says this drive is not compatible with the 64-bit OSX Snow Leopard kernel? I boot into the 32-bit kernel by default, just like all Macs. And where do I find this driver? If it was on the hard drive in NTFS format, it's gone now as I re-partitioned the drive. How do I access the entire 3TB in OSX 10.6? I have found no answers via Google or on Seagate's site. What I do find is a big explanation as to why this drive breaks the 2.1TB barrier in Windows and is thus incompatible with all versions of it except 64-bit due to the need for higher LBA addressing. Those same references say OSX is OK because it already handles that in Snow Leopard. But apparently something else is needed, as I only see about 25% of the drive in OSX.