jspraul Posted March 3, 2015 Share Posted March 3, 2015 According to the following thread, the reason reading from multi-track discs is blocked is as follows: If you try and read a multisession disc to a single session image, you could/would lose data (files) present in one but not the other. However, this check is implemented incorrectly -- instead of blocking multi-session discs, it blocks all multi-track discs, even when the disc holds only a single session. This design flaw has been in place since v2.5.6, released back in 2012. The fix was also hinted at in the same forum thread: I might be able to add an exception for layouts like that but I'm not sure I have the means to create such a disc that I could use for testing. Hardware DVD recorders finalize in a multi-track format even when they are used to record only a single session on a disc (generating a menu that is included even for the one session). Here is another example of the ImgBurn disc info box for this type of disc: PLDS DVD+-RW DH-16ACS JD11 (SATA) Current Profile: DVD-R Disc Information: Status: Complete State of Last Session: Complete Erasable: No Sessions: 1 Sectors: 1,949,584 Size: 3,992,748,032 bytes Time: 433:16:34 (MM:SS:FF) MID: MCC 02RG20 Supported Read Speeds: 2x, 4x, 6x, 8x, 12x, 16x Current Read Speed: 6x TOC Information: Session 1... (LBA: 0) -> Track 01 (Mode 1, LBA: 0 - 1949583) -> LeadOut (LBA: 1949584) Track Information: Session 1... -> Track 01 (LTSA: 0, LTS: 16128, LRA: 767) -> Track 02 (LTSA: 16144, LTS: 224, LRA: 16367) -> Track 03 (LTSA: 16384, LTS: 1933168, LRA: 1949551) -> Track 04 (LTSA: 1949568, LTS: 16, LRA: 1949583) Pre-recorded Information: Manufacturer ID: MCC 02RG20 Recording Management Area Information: FUNAI L61A9030907BOK+- DVD-RW DD-DRA Physical Format Information (Last Recorded): Book Type: DVD-R Part Version: 5 Disc Size: 120 mm Maximum Read Rate: Not Specified Number of Layers: 1 Track Path: Parallel Track Path (PTP) Linear Density: 0.267 um/bit Track Density: 0.74 um/track First Physical Sector of Data Area: 196,608 Last Physical Sector of Data Area: 2,146,191 Last Physical Sector in Layer 0: 0 I have used IsoBuster to read an image from this disc, but ImgBurn fails to open it with the following error dialog: --------------------------- ImgBurn --------------------------- Minutes out of range! --------------------------- OK --------------------------- The .CUE IsoBuster created for the 3,992,748,032-byte binary dvd image file (no extension?) is: FILE "20150301-original" BINARY REM ORIGINAL MEDIA-TYPE: DVD-R REM SESSION 01 ; Not supported by other applications (*) TRACK 01 MODE1/2048 INDEX 01 00:00:00 REM MSF: 00:00:00 = LBA: 0 TRACK 02 MODE1/2048 INDEX 00 03:35:03 REM MSF: 03:35:03 = LBA: 16128 INDEX 01 03:35:19 REM MSF: 03:35:19 = LBA: 16144 TRACK 03 MODE1/2048 INDEX 00 03:38:18 REM MSF: 03:38:18 = LBA: 16368 INDEX 01 03:38:34 REM MSF: 03:38:34 = LBA: 16384 TRACK 04 MODE1/2048 INDEX 00 433:14:02 REM MSF: 433:14:02 = LBA: 1949552 INDEX 01 433:14:18 REM MSF: 433:14:18 = LBA: 1949568 REM (*) SESSION directives are unfortunately not properly supported REM 'out there'. IsoBuster however supports them ! Due to my unfamiliarity with ImgBurn features, a visit to the forums was necessary to find other threads giving the work-around to add the DVD drive root in build mode. The error message currently reads: --------------------------- ImgBurn --------------------------- Sorry, using Read mode to create an image file from a multi-track DVD-R disc is not currently supported. Instead, use Build mode to create a new 'clean' image based on the contents of the disc. --------------------------- OK --------------------------- I propose changing this to act like the helpful auto-volume-label popup, offering to switch modes and add the source: Sorry, using Read mode to create an image file from a multi-track DVD-R disc could cause data loss. Would you like to use Build mode to create an image including only the most recent session? Link to comment Share on other sites More sharing options...
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