Drive in question: Panasonic UJ-225
I have found that when using non-Apple hardware optical drive, Ultra DMA Mode 5 will not work with the DVD Drive. In my case Blu-Ray drive does not work well under Windows 7. The drive can play back, however, it is limited to Multi-Word DMA 2 which is not fast enough to play back blu-ray in bootcamp.
Like I noted above the factory DVD Super Drive that comes with the Mac can run at Ultra DMA 5. I have placed this blu-ray drive in a PC and the Dell picks it up at Ultra DMA 5, but when in the Mac - it only gets picked up as Multi-Word DMA 2 (16.67 Mbps).
If anyone knows how in the efi (rfit) shell I could enable DMA support for non Apple optical drive hardware - I would appreciate it. I make a lot of movies for post production companies and lately I have been using higher quality media files that require more storage than DVD discs. Therefore, I have been going crazy to see how Apple locked down this feature when booting Windows on MacBook Pro Computers. If it helps I have 17'' non-unibody MacBook Pro A1261 model. USB drive solves the problem, however, having a blu ray drive in the machine would be great to review my work quicker. Thanks for any help and suggestions you may have.
Update: there is no a blu-ray reader in Mac OS X that does read my exported .M2TS files properly, but when I am working on the PC side it would be great to have that work as well. Maybe the vendor of the Panasonic UJ-225 drive needs to be switched to Apple for it to allow full Ultra DMA mode. I am interested to hear any suggestions anyone has.
I have found that when using non-Apple hardware optical drive, Ultra DMA Mode 5 will not work with the DVD Drive. In my case Blu-Ray drive does not work well under Windows 7. The drive can play back, however, it is limited to Multi-Word DMA 2 which is not fast enough to play back blu-ray in bootcamp.
Like I noted above the factory DVD Super Drive that comes with the Mac can run at Ultra DMA 5. I have placed this blu-ray drive in a PC and the Dell picks it up at Ultra DMA 5, but when in the Mac - it only gets picked up as Multi-Word DMA 2 (16.67 Mbps).
If anyone knows how in the efi (rfit) shell I could enable DMA support for non Apple optical drive hardware - I would appreciate it. I make a lot of movies for post production companies and lately I have been using higher quality media files that require more storage than DVD discs. Therefore, I have been going crazy to see how Apple locked down this feature when booting Windows on MacBook Pro Computers. If it helps I have 17'' non-unibody MacBook Pro A1261 model. USB drive solves the problem, however, having a blu ray drive in the machine would be great to review my work quicker. Thanks for any help and suggestions you may have.
Update: there is no a blu-ray reader in Mac OS X that does read my exported .M2TS files properly, but when I am working on the PC side it would be great to have that work as well. Maybe the vendor of the Panasonic UJ-225 drive needs to be switched to Apple for it to allow full Ultra DMA mode. I am interested to hear any suggestions anyone has.