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After spending hours on trying to make it use Ultra DMA instead of the no CRC Multi Word DMA 2 transfer mode; I gave up. It seems like HP has forced the transfer mode to be Multi Word DMA 2 although the drive is capable of Ultra DMA 2.

Your speeds sounds very low. Might be worth to check if DMA is enabled. http://forum.imgburn.com/index.php?s=&...dpost&p=967 Thanks, Cynthia You are right. The drive is on Multi Word DMA 2. I am trying to make it use UDMA. Reinstallation of driver did not help. HP's BIOS does not show if UDMA is enabled. I will post after making some more attempts. BTW, thanks for the wonderful ImgBurn guide.

Thanks mmalves! I tried with firmware HH18 and Verbatim disc. No luck. Exact same problem. Not sure what is so sticky about Sector 1455248; that it fails exactly there!

Hello, ImgBurn is having trouble verifying the disc after it writes and it happens consistently when it attempts to verify the second layer (Sector 1455248). I tried the following (only in vain): 1. Upgraded the firmware of my TSSTCorp T-L632D drive from HH15 to HH17. That made it worse - it could not even complete the writes. Rolled it back. 2. Tried different media: Memorex and Verbatim (Singapore made). No luck! Any suggestions? What does the displayed error "Timeout on Logical Unit" mean? Does it suggest a problem with the drive? Or is it the media? I have already had 6 coasters. Thanks in advance!!!!!! ; //****************************************\\ ; ImgBurn Version 2.4.2.0 - Log ; Saturday, 31 January 2009, 10:36:04 ; \\****************************************// ; ; I 07:24:01 ImgBurn Version 2.4.2.0 started! I 07:24:01 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 3) I 07:24:01 Total Physical Memory: 3,538,284 KB - Available: 2,873,180 KB W 07:24:01 Drive E:\ (FAT32) does not support single files > 4 GB in size. I 07:24:01 Initialising SPTI... I 07:24:01 Searching for SCSI / ATAPI devices... I 07:24:01 Found 1 DVD