mmalves

You're not doing anything wrong: your drive is old and has problems recognizing the discs you're using. Notice that it only supports DVD+R/+RW, not DVD-R/-RW. Finding media that this burner likes will be quite difficult, and burners are pretty cheap nowadays, so why not get a new one?

The Verify process checks data on the disc byte-by-byte against the source image, and if there was an error reading the source files the error message would be different.

Have you tried 8x or 4x with the new firmware? Are those Verbatim blanks made in India or elsewhere? Also try a lens cleaner disc on that burner before trying again.

Apply the latest firmware (GL0J) and try again. Remove any disc from the drive and close the tray before upgrading the firmware.

According to this post, your drive is a BenQ DW1640 burner. Have a look around the CDFreaks forum for other people's experiences with crossflashing this model

This is the real error. As I see it, you have 2 options: get Verbatim 2.4x MKM-001-00 Made in Singapore blanks or get a new burner, since new burners have better support Verbatim 8x MKM-003-00 blanks.

AUTO uses MAX write speed, unless you've actually configured the Automatic Write Speed feature. Have you tried burning at 16x, since that's the media's rated speed? You may want to try at 8x or 12x too. By the way, there's firmware SB04 for that burner

Please post the log from the burn with Verbatim media (Help->ImgBurn Logs).

As you can see, it did overburn in Build mode without problem. The problem was reading the disc beyond the nominal capacity. I've found this thread over at CDFreaks Forum with overburning results of several different media, which you can compare to yours.

The log is automatically saved each time you've used ImgBurn, and you can find the logs at Help/ImgBurn Logs

Shortcut -> http://lgodd.lge.com/fwdrv/DVD-WRITER/GSA4163A106.exe (right-click on the link and choose Save As)

Try DVD Flick. If you can play the .m2ts then it'll probably work

Please post the whole log of that burn, as the one you've posted is missing important informations.

If my crystall ball is correct, you're probably trying to burn an ISO image intended to be burned on a dual-layer disc, which holds up to 8,547,991,552 bytes. You can either use DVD Shrink to shrink that image to fit a common 4.7GB blank disc, or you could buy a Verbatim DVD+R DL 2.4x MKM-001-00 Made in Singapore blank disc and burn that ISO image as it is

The hashes match, which means the file was correctly downloaded. Now open ImgBurn, switch to Verify mode, point ImgBurn to your ISO image and verify it against the burned disc. Your problem has no relation to 32/64-bit architectures.

http://beeblebrox.org/hashtab/

You'll have to use better discs, such as the ones made by Verbatim and Taiyo Yuden, since the ones you're using now are incompatible with your burner

Commercial discs usually are protected, so, depending on the program you've used to copy the original DVDs, the protection might not have been removed. Anyway, we can't talk about that here On your powerbook try VLC Media Player

If you look at the right places you can find 90min CD-Rs

If you want to burn your WAV files to an Audio CD then this is the guide you should read

Get from the ImgBurn.com mirror, as that's the correct one. There was a silent update issued a few hours after ImgBurn v2.4.1.0 was released and some of the mirrors didn't pick it up. By the way, if you're so worried about your precious data that everyone's after, you should learn how to run programs in restricted access/environment.

ImgBurn is just a burning tool: it doesn't convert anything

Please read the pink bit at the top of this page, especially the line in bold (you can find the log at Help/ImgBurn Logs)

no matter what printed on packing in "made in.."? Do not get the ones made in India. The others (made in Singapore/Japan/Taiwan) are fine.