leoliver
26th November 2008, 18:15
Hi Everyone,
I recently made the following post to a Windows forum.....
"I decided to try and update the firmware in my SONY DVD RW DRU-720A external USB drive . I want to update to JY08 , from JYC4 . Sony says I must disable DMA for my external SONY DVD RW DRU-720A , before I can flash the new firmware. But how can I tell which IDE channel , in device
manager controls my SONY DVD RW DRU-720A ? I also have both a internal CD-RW drive , and a internal DVD-Rom drive . And a external USB Seagate hard drive . And my controllers are IDE ATA/ATAPI controllers .
I will very much appreciate someone telling how to "sort out" which DMA setting goes to my SONY DVD RW DRU-720A . "
And this is the answer I received ..........
" IDE channels are only internal hard drive connections. USB drives do not have the IDE setting for DMA."
It looks my knowledge of DMA uses is very limited . Especially as DMA relates to DVD-RW drives . And I'm looking for answers to how I can safely , temporary disable DMA for my SONY DVD RW DRU-720A , so I can update the firmware .
I've read that improper firmware updates can destroy a DVD drive. And that if a DMA setting is changed to PIO , then Windows may not be able to turn DMA back on.
So any feedback will be appreciated .
Also I'm attaching a firmware update PDF from Sony . It said to go to "Help and Support" for info on disabling DMA , but a search for the topic came back with no useful info.
I recently made the following post to a Windows forum.....
"I decided to try and update the firmware in my SONY DVD RW DRU-720A external USB drive . I want to update to JY08 , from JYC4 . Sony says I must disable DMA for my external SONY DVD RW DRU-720A , before I can flash the new firmware. But how can I tell which IDE channel , in device
manager controls my SONY DVD RW DRU-720A ? I also have both a internal CD-RW drive , and a internal DVD-Rom drive . And a external USB Seagate hard drive . And my controllers are IDE ATA/ATAPI controllers .
I will very much appreciate someone telling how to "sort out" which DMA setting goes to my SONY DVD RW DRU-720A . "
And this is the answer I received ..........
" IDE channels are only internal hard drive connections. USB drives do not have the IDE setting for DMA."
It looks my knowledge of DMA uses is very limited . Especially as DMA relates to DVD-RW drives . And I'm looking for answers to how I can safely , temporary disable DMA for my SONY DVD RW DRU-720A , so I can update the firmware .
I've read that improper firmware updates can destroy a DVD drive. And that if a DMA setting is changed to PIO , then Windows may not be able to turn DMA back on.
So any feedback will be appreciated .
Also I'm attaching a firmware update PDF from Sony . It said to go to "Help and Support" for info on disabling DMA , but a search for the topic came back with no useful info.