I've just ben troubleshooting a new Benq DW1625 drive, which I had wanted to put into an external case. The case has no brand [the box is royal blue, and has an eagle on it, and model number FR929, USB2 and IEE1394a]
So I installed the drive on Monday evening at home, plugged in the USB2 cable, started up the PC, burnt a couple of disks all OK. Next morning took the drive to work, plugged in the Firewire to my Mac [Powerbook Titanium 800] no joy, device wouldn't mount and couldn't be seen by the computer in Apple System Profiler. drive however did work on the USB1 port, but that's useless. Opened the enclosure up, took a look at the controller chipsets, Initio 1430L for Firewire and a Cypress Semiconductor CY7C... for the USB2. Checked www.initio.com, saw that there was a specific firmware upgrade for MacOSX.3.6 onwards, tried to apply from a Mac with an older OS no joy, flash utility doesn't see drive,
Took it home that night and tested it with Firewire on PC, no joy, attempted to patch the firmware from the PC, no joy.
Was gettiong late when I decided to remove my Sony DWU-18, put that in the enclosure, the Benq in the computer [makes sense anyway, Benq 16x, Sony 8x, better chance of 16x on an internal]. Started up the PC, and the Sony drive was recognised [allbeit as a Initio DWU-18, in the device manager, but a Sony in Nero] and the Benq came up fine as well.
So all in all I'm happy with the end result.
In answer to DVD-VIP above.
1. MacOSX: 10.3.9 and 10.3.4, Windows 2000 SP 4.
2. Drive not visible to OS never mounts both Win and Mac.
3. Benq DW1625, firmware # BBHA
4. Not sure where to find this.
5. Can't help with the controller manufacturer, nothing on board, as mentioned above blue box with and eagle on it model number FR929
Hope this helps someone, I was just lucky to have two drives to play with.