Burning an iso using DU

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I am trying to burn a large iso file to a Dual Layer DVD (DVD+R) so that it is bootable for future reference. My macbook is, according to the specs, capable of doing this. Yet when i click "burn" in DU, i get the message:

Unable to burn "...iso". the device is not supported for the requested operation.

I have a Matshita DVD-R UJ-857 drive. Am i using the wrong disk or is my drive faulty. I get a similar message in Toast and Burn.

Any ideas, settings i need to adjust, programs, drivers?
 
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Your Mac's Specs
Mac Mini 2.5 i5/16Gb/500Gb/Radeon 6630M-256MB
The drive might not be supported for burning from within FInder, you can get that information from System Profiler under Disc Burning, it should say something like "Burn Support Yes" if it says "Burn Support No" you may need to get a supported drive......
 
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Nope. Take a look:

MATSHITA DVD-R UJ-857:

Firmware Revision: HBEA
Interconnect: ATAPI
Burn Support: Yes (Apple Shipped/Supported)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -RW, +R, +RW
Burn Underrun Protection CD: Yes
Burn Underrun Protection DVD: Yes
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media:
Media Type: DVD-R DL
Blank: Yes
Erasable: No
Overwritable: Yes
Appendable: Yes
 
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I see why from here, your burner doesn't do DL.....like mine in my eMac.....
HL-DT-ST DVD-RAM GSA-H55N:

Firmware Revision: 1.03
Interconnect: ATAPI
Burn Support: Yes (Unsupported)
Profile Path: None
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -RAM, -RW, +R, +RW, +R DL
Burn Underrun Protection CD: Yes
Burn Underrun Protection DVD: Yes
Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
Media: No
 
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Macbook, 2GHtz, 2Gb RAM, 320Gb HDD. 16Gb iPT Jailbroken.
Nope. Take a look:

MATSHITA DVD-R UJ-857:

Firmware Revision: HBEA
Interconnect: ATAPI
Burn Support: Yes (Apple Shipped/Supported)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -RW, +R, +RW
Burn Underrun Protection CD: Yes
Burn Underrun Protection DVD: Yes
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media:
Media Type: DVD-R DL
Blank: Yes
Erasable: No
Overwritable: Yes
Appendable: Yes

Don't think you can burn DL discs.

Doesn't have +R DL at the end like mine.
 
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MATSHITA DVD-R UJ-857D:

Firmware Revision: KBVB
Interconnect: ATAPI
Burn Support: Yes (Apple Shipped/Supported)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -RW, +R, +RW, +R DL
Burn Underrun Protection CD: Yes
Burn Underrun Protection DVD: Yes
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media: No

You must have an older firmware installed.
 

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