The IDE bus in the 533-G4 is your limiting factor. When you install a drive larger than 137GB, you will only see 128GB. What you need to do is install an ATA100 or ATA133 PCI card. This card had two additional IDE busses that will accept up to four IDE devices. Here's is one explanation you can read: http://www.mrbarrett.com/mt/archives/2002_06_11.html Brian Conner -----Original Message----- From: Power Macintosh G4 List [mailto:G4 at lists.themacintoshguy.com] On Behalf Of Tony Charlton Sent: Sunday, March 02, 2003 6:09 PM To: Power Macintosh G4 List Subject: [G4] G4 533Mhz Tower and a 200 GB hard drive - not ! Ok . . I decided not to add the second optical drive but to add a 200GB hard into the zip bay instead . . . and so the trouble started ! After I formatted what did I get for my money ? . . .128GB ! Great Does anybody have any idea why this should happen and what I can do to get the full 200GB or am I limited to 128GB !!! Please help ! ! Thanks Tony. ---------- G4ist, a listserv for discussion of everything G4. FAQ at <http://www.themacintoshguy.com/lists/G4.html>. Send a message to <G4-DIGEST at themacintoshguy.com> to switch to the digest. XRouter | Share your DSL or cable modem between multiple computers! Dr. Bott | Now $139.99 <http://www.drbott.com/prod/xrouter.html> Dr. Bott LLC 4-port USB Hub in translucent Graphite! Dr. Bott LLC <http://www.drbott.com/prod/ghub.html> Small Dog Electronics http://www.smalldog.com | Canon Digital Cameras | --Quicksilver & refurbished G4's arriving daily! | and Camcorders!! | MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com> OS X News, Dr.Mac, Forums, Tutorials, Tips, Hints, FAQ?s - http://www.osxfaq.com