[QUOTE=rjybbot;2234738]I am using a TDK DVD+R 1X - 16X and have tried all burn speeds,I have tried other disc brands with no luck,and also tried burning at slower speeds with no luck,most of the time the portable tells me the disc is invalid,
the only setting I found that was not the same is the region setting for the drives,my external is set at no Region and the internal is set at Region 1,do you think this could have anything to do with it,[/QUOTE]
Sorry for delay, playing w/ a new drive arrived today:o
What other discs have you tried? What software are you burning with? Are you setting the booktype on those external +R burns to DVD-ROM? Have you tried a -R disc? Do you have CD-DVDspeed handy to run quality scans of the good and bad discs in the A1 to see if its a burn quality problem? Here’s a link to a guide if you’re not familiar(scroll on down to 3-basic tests-disc quality)http://club.cdfreaks.com/f96/cd-dvd-speed-user-guide-192563/
Try to scan them, burn quality can be a real issue with portables.
Never had problem w/ region-free drive burns. Thought that only affects reading. But living in US, never had to become an expert on the region issues. Perhaps someone else knows if that could be an issue? At the end of the day, could be as simple as one burner likes your choice of discs, other doesn’t. Course that might be corrected w/ new firmware for the A1 drive. Lots of custom tweaked firmwares on this forum for that drive http://club.cdfreaks.com/f44/liteon-16a7s-16w1p-16-18-20a1p-h-s-l-fastburn-enhanced-overspeed-enhanced-oht-firmware-new-207033/ , find them at post#1.