Das Problem an der ganzen Geschichte ist, dass die neuen Laufwerke kleiner sind als die alten Laufwerke. Du musst dir eine Einbauschiene basteln. Zusätzliches Hinderniss ist das der Strom/Datenanschluss auf der anderen Seite plaziert ist. Das original Kabel ist zu kurz. Hier zum Nachlesen:This was a really tricky one - not in opening up the case, which is simple in this model of Macintosh, but in getting the electrical connections sorted out and the drive fixed in place.
this drive is smaller than the original drive. Phyical installation was by removing the top cover of a spare broken drive of the correct size, and fixing the new drive to the old top cover (which included the side screw holes). I used double-sided sticky pads to attach the drive to the old drive's top case, and folded paper padding between the new drive and the drive carrier in the imac - the paper supports the weight of the drive, and the sticky pads prevent the drive moving sideways or backwards/forwards.
The electrical problem is trickier - this drive is shorter than the old drive, so the old IDE cable won't reach. In addition, it's 50-pin micro-connector is on the other side of the drive to the original drive in the imac, so the original adaper could not be used.
I obtained a new adapter from the same place as the drive (
http://www.netbox.co.uk/) who do parts as a sideline on eBay.
I made up a new IDE cable from an old SCSI cable with a couple of new 40pin IDE IDCs. The tricky part of that is that the adapter's IDE connector isn't keyed, and turns out to be upside down compared to the hard disk. so I have to put a half twist in the cable to make it all work. (The motherboard is 10 lines and then the standard 40 IDE lines, so the ide connectors go on the last 40 wires of the SCSI cable).
I got power from an adapter put in-line with the hard-drive power - make sure you tap the 5V line!
The audio connection come from the first four lines of the motherboard connector - Left, Ground, Ground, Right. The motherboard also supplies power with the remaining six lines somehow, but I didn't get that to work.
Finally, I had to make the hard drive the slave device, as I couldn't find out how to set the combo drive to slave.
It all works - boots Mac OS 9 from the drive, reads and plays DVDs, reads and writes CD-R. I had to hack the Matshita authoring support file (I changed 7122 to 8122), and so far I've only burned at 8x from iTunes, not the 24x that I should be able to, but that might be because I only done audio disks - I think the MP3 decode is the bottleneck.
Summary: It works, but it's very fiddly. Hopefully Mac OS X will offer support for this drive when I get around to upgrading.
Viel Spaß