mmalves

If you're worried about wasting discs, get a rewritable disc, or even better, use a virtual drive like Daemon Tools / Alcohol 52% / SlySoft Virtual Clone Drive / DVDFab Virtual Drive / others.

Pressed DVDs are PTP (Parallel Track Path), which means both layers are read from the center of the disc towards the edge, and PTP discs can have L1 bigger than L0. Writeable media is OTP (Opposite Track Path), where L0 is read from the center of the disc towards the edge and L1 is read from the edge towards the center of the disc, and this is why L1 can't be bigger than L0 (they wouldn't be aligned).

To even the number of sectors on each layer (look at the % column) as DVD players seem to like better discs with a 50/50 ratio.

http://forums.mydigitallife.info/threads/24666-The-Windows-7-SP1-USB-Driver-Bug-(what-it-is-and-how-to-fix-it)

http://forum.imgburn.com/index.php?showtopic=7713 http://forum.imgburn.com/index.php?showtopic=13358 http://forum.imgburn.com/index.php?showtopic=17636 Bug in the firmware that they haven't yet solved, seems to affect only external burners. Or maybe their USB chipset is messing with the info and they didn't notice

You can flash DW30 on your burner, it's just that Dell names their firmware DW10/DW20/etc after what would be D900

Update your burner's firmware.

Your drive supports burning DVD+R DL media but the media you have is known for its low quality. Update your burner's firmware and try again at 4x or 6x speed. If it doesn't work then you'll have to use Verbatim DVD+R DL blanks.

http://forum.imgburn.com/index.php?showtopic=8000

Update ImgBurn and please read this -> http://forum.imgburn.com/index.php?showtopic=8000

Then your source image is defective. On another note, if you're going to re-download it, get the one(s) with SP1 integrated en_windows_7_ultimate_with_sp1_x86_dvd_619077.iso en_windows_7_ultimate_with_sp1_x64_dvd_618240.iso

That's a hard disk image, not a bootable optical media image.

Try burning at 4x or 8x, as those are 16x rated blanks after all. If it still doesn't work then you could try cleaning the drive with a lens cleaning disc.

It automatically booktypes DVD+R DL media to DVD-ROM by itself, so you don't need to worry about it.

Because disc quality may vary even inblanks from the same batch? You could ask LG for newer firmware with better support for those blanks.

Too much work to save just one click

Try with the 8x Verbatim DVD+R DL blanks, maybe your burner likes them better.

http://forum.imgburn.com/index.php?showtopic=8000

Right-click on the burner's name -> Change Book Type or click the little icon that looks like an open book available in the main window (in Build mode it's on the Device tab).

By verify I mean having the Verify option enabled in ImgBurn: it cycles the tray to ensure the disc can be properly identified after removal and then checks data on the disc against the source image/files. This tells you if the disc is fully readable or not. Active OPC is part of the burner's strategy for writing the disc with the highest possible quality, so it can't be turned off, and even if you could, you would then get lower quality burns and very possibly unreadable discs. Your other Pioneer burners also perform active OPC, but maybe in a less frequent way, and that could be why you didn't notice before. Newer burners tend to do a lot of OPC "stop and check" operations, especially when burning at faster speeds. You can check all of this by looking at the burn graphs (in ImgBurn go to Help -> ImgBurn Graph Data) and also by looking at the myce/cdreaks forums.

It's probably due to Active OPC and, if it verifies fine, then you don't need to worry about it.

Tools -> Settings -> Build tab -> page 3, enable Don't Prompt Image Details and hit OK. //edit that's what I get for not refreshing and using quick reply

Eject tray after Verify is for when you use the Verify mode to manually check a disc. The option you want is Eject tray after Write, since the verify after burning a disc is still part of the Write process.

You should use DVD Flick / DVD Styler / ConvertXtoDVD to do that.

Go to the Options tab, click Reset Settings and confirm. Does it work now?