digital_archivist

I'll try that. Thanks!

For the last month or so, I've been unable to verify burns on a reletively new PC (ASUS P8Z68-V PRO; Win 7 Ultimate 64-bit; Intel Smart Response Technology for SSD caching on the fixed disks [but not on the optical drives); a Sony Blu-Ray and a Sony Optiarc DVD burner attached to the motherboard's Marvell SATA 3 connectors). It used to work and suddenly stopped; nothing unusual shows up in the Windows Event Viewer. I've updated the Intel SRT driver and the m/b BIOS without affecting the problem. Typical snippet from the log; after the program hangs at verifying, I cancelled the operation: I 17:01:49 ImgBurn Version 2.5.6.0 started! I 17:01:49 Microsoft Windows 7 Ultimate x64 Edition (6.1, Build 7601 : Service Pack 1) I 17:01:49 Total Physical Memory: 7,833,636 KB - Available: 5,404,724 KB I 17:01:49 Initialising SPTI... I 17:01:49 Searching for SCSI / ATAPI devices... I 17:01:49 -> Drive 1 - Info: DTSOFT BDROM 1.05 (J:) (Virtual) I 17:01:49 -> Drive 2 - Info: Optiarc DVD RW AD-7280S 1.01 (F:) (SATA) I 17:01:49 -> Drive 3 - Info: SONY BD RW BWU-500S 1.63 (E:) (SATA) I 17:01:49 Found 1 DVD±RW/RAM, 1 BD-ROM and 1 BD-RE! I 17:03:19 Operation Started! I 17:03:19 Source File: C:\Users\XXXXX\Desktop\More Linux Audio\ubuntu-11.10-alternate-i386.iso I 17:03:19 Source File Sectors: 344,726 (MODE1/2048) I 17:03:19 Source File Size: 705,998,848 bytes I 17:03:19 Source File Volume Identifier: Ubuntu 11.10 i38 I 17:03:19 Source File File System(s): ISO9660 (Bootable), Joliet I 17:03:19 Destination Device: [2:0:0] Optiarc DVD RW AD-7280S 1.01 (F:) (SATA) I 17:03:19 Destination Media Type: CD-R (Disc ID: 97m25s35f, Infodisc Technology Co.) I 17:03:19 Destination Media Supported Write Speeds: 8x, 16x I 17:03:19 Destination Media Sectors: 359,847 I 17:03:19 Write Mode: CD I 17:03:19 Write Type: SAO I 17:03:19 Write Speed: MAX I 17:03:19 Lock Volume: Yes I 17:03:19 Test Mode: No I 17:03:19 OPC: No I 17:03:19 BURN-Proof: Enabled I 17:03:19 Write Speed Successfully Set! - Effective: 2,822 KB/s (16x) I 17:03:20 Filling Buffer... (40 MB) I 17:03:26 Writing LeadIn... I 17:03:43 Writing Session 1 of 1... (1 Track, LBA: 0 - 344725) I 17:03:43 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 344725) I 17:08:42 Synchronising Cache... I 17:09:00 Exporting Graph Data... I 17:09:00 Graph Data File: C:\Users\XXXXX\AppData\Roaming\ImgBurn\Graph Data Files\Optiarc_DVD_RW_AD-7280S_1.01_TUESDAY-JANUARY-10-2012_5-03_PM_97m25s35f_MAX.ibg I 17:09:00 Export Successfully Completed! I 17:09:00 Operation Successfully Completed! - Duration: 00:05:40 I 17:09:00 Average Write Rate: 2,305 KB/s (15.4x) - Maximum Write Rate: 2,433 KB/s (16.2x) I 17:09:00 Cycling Tray before Verify... W 17:09:08 Waiting for device to become ready... I 17:09:18 Device Ready! I 17:09:20 Operation Started! I 17:09:20 Source Device: [2:0:0] Optiarc DVD RW AD-7280S 1.01 (F:) (SATA) I 17:09:20 Source Media Type: CD-R (Disc ID: 97m25s35f, Infodisc Technology Co.) I 17:09:20 Source Media Supported Write Speeds: 8x, 16x I 17:09:20 Image File: C:\Users\XXXXX\Desktop\More Linux Audio\ubuntu-11.10-alternate-i386.iso I 17:09:20 Image File Sectors: 344,726 (MODE1/2048) I 17:09:20 Image File Size: 705,998,848 bytes I 17:09:20 Image File Volume Identifier: Ubuntu 11.10 i38 I 17:09:20 Image File File System(s): ISO9660 (Bootable), Joliet I 17:09:20 Read Speed (Data/Audio): MAX / MAX I 17:09:21 Verifying Session 1 of 1... (1 Track, LBA: 0 - 344725) I 17:09:21 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 344725) I 17:13:28 Abort Request Acknowledged E 17:19:22 Failed to Read Sectors 0 - 31 - Reason: The device is not connected. W 17:19:22 Device Removal Detected! W 17:19:22 The device list will be refreshed at the next available opportunity. E 17:19:22 Failed to Verify Sectors! E 18:16:17 Failed to unlock drive from exclusive access. E 18:16:17 Reason: Access is denied. I 18:16:17 Exporting Graph Data... I 18:16:17 Graph Data File: C:\Users\XXXXX\AppData\Roaming\ImgBurn\Graph Data Files\Optiarc_DVD_RW_AD-7280S_1.01_TUESDAY-JANUARY-10-2012_5-03_PM_97m25s35f_MAX.ibg I 18:16:17 Export Successfully Completed! E 18:16:17 Operation Aborted! - Duration: 00:10:02 I 18:16:17 Average Verify Rate: N/A - Maximum Verify Rate: N/A E 18:16:22 CreateFile Failed! - Device: '\\?\scsi#cdrom&ven_optiarc&prod_dvd_rw_ad-7280s&rev_1.01#5&80103c0&0&000000#{53f56308-b6bf-11d0-94f2-00a0c91efb8b}' E 18:16:22 Reason: The system cannot find the file specified. I 18:16:22 Searching for SCSI / ATAPI devices... I 18:16:22 -> Drive 1 - Info: DTSOFT BDROM 1.05 (J:) (Virtual) I 18:16:22 -> Drive 2 - Info: SONY BD RW BWU-500S 1.63 (E:) (SATA) I 18:16:22 Found 1 BD-ROM and 1 BD-RE! I 18:16:23 Close Request Acknowledged I 18:16:23 Closing Down... I 18:16:24 Shutting down SPTI... I 18:16:24 ImgBurn closed! I'm sorry if this has been covered previously, but I didn't find any current references in my search. Thanks!