Creating a Snow Leopard DVD ISO Image
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Posted 10 September 2009 - 09:42 AM
I am a bit concerned because the ISO image which I created is 7.23 GB and the actual Snow Leopard DVD is 6.19 GB when looking at the drive's properties. The explanation may be in that the DVD contains both Mac and Windows files. When I use MacDrive 7 to view the Mac files on the DVD or Image, they total 6.11 GB. When I use MacDrive to view the Windows files on the DVD or Image, they total 984 MB. If you combine these two, they total about 7.09 GB which could explain the 7.23 GB total size for the ISO. However, the drive property where the DVD is always shows 6.19 GB whether I am viewing the Mac files or Windows files.
A greater point of concern is that I did not see HFS+ being flagged as a file system on the Snow Leopard DVD in ImgBurn's log file.
Below is the log from the build/verify process:
I 02:34:58 ImgBurn Version 188.8.131.52 started!
I 02:34:58 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 3)
I 02:34:58 Total Physical Memory: 1,046,632 KB - Available: 466,644 KB
I 02:34:58 Initialising SPTI...
I 02:34:58 Searching for SCSI / ATAPI devices...
I 02:34:59 Found 1 DVD-ROM, 1 DVD±RW and 1 DVD±RW/RAM!
I 02:47:28 Operation Started!
I 02:47:28 Source Device: [1:0:0] TSSTcorp DVD+-RW TS-H653B D200 (E:) (ATA)
I 02:47:28 Source Media Type: DVD-ROM (Book Type: DVD-ROM)
I 02:47:28 Source Media Sectors: 3,794,688 (Track Path: OTP - L0: 1,897,344 - L1: 1,897,344)
I 02:47:28 Source Media Size: 7,771,521,024 bytes
I 02:47:28 Source Media Volume Identifier: WindowsSupport
I 02:47:28 Source Media Application Identifier:
I 02:47:28 Source Media File System(s): ISO9660, Joliet
I 02:47:28 Read Speed (Data/Audio): MAX / 8x
I 02:47:28 Destination File: D:\SL.ISO
I 02:47:28 Destination Free Space: 12,956,602,368 Bytes (12,652,932 KB) (12,356 MB) (12 GB)
I 02:47:28 Destination File System: NTFS
I 02:47:28 File Splitting: Auto
I 02:47:29 Reading Session 1 of 1... (1 Track, LBA: 0 - 3794687)
I 02:47:29 Reading Track 1 of 1... (MODE1/2048, LBA: 0 - 3794687)
I 02:47:29 Reading Layer 0... (LBA: 0 - 1897343)
I 02:55:45 Reading Layer 1... (LBA: 1897344 - 3794687)
I 03:03:58 Exporting Graph Data...
I 03:03:59 Graph Data File: C:\Documents and Settings\User\Application Data\ImgBurn\Graph Data Files\TSSTcorp_DVD+-RW_TS-H653B_D200_THURSDAY-SEPTEMBER-10-2009_2-47_AM_N-A.ibg
I 03:03:59 Export Successfully Completed!
I 03:03:59 Operation Successfully Completed! - Duration: 00:16:30
I 03:03:59 Average Read Rate: 7,666 KB/s (5.5x) - Maximum Read Rate: 12,944 KB/s (9.3x)
I 03:10:39 Operation Started!
I 03:10:39 Source Device: [1:0:0] TSSTcorp DVD+-RW TS-H653B D200 (E:) (ATA)
I 03:10:39 Source Media Type: DVD-ROM (Book Type: DVD-ROM)
I 03:10:39 Image File: D:\SL.MDS
I 03:10:39 Image File Sectors: 3,794,688 (MODE1/2048)
I 03:10:39 Image File Size: 7,771,521,024 bytes
I 03:10:39 Image File Volume Identifier: WindowsSupport
I 03:10:39 Image File Application Identifier:
I 03:10:39 Image File File System(s): ISO9660, Joliet
I 03:10:39 Read Speed (Data/Audio): MAX / MAX
I 03:10:40 Verifying Session 1 of 1... (1 Track, LBA: 0 - 3794687)
I 03:10:40 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 3794687)
I 03:27:09 Exporting Graph Data...
I 03:27:10 Graph Data File: C:\Documents and Settings\User\Application Data\ImgBurn\Graph Data Files\TSSTcorp_DVD+-RW_TS-H653B_D200_THURSDAY-SEPTEMBER-10-2009_3-10_AM_N-A.ibg
I 03:27:10 Export Successfully Completed!
I 03:27:10 Operation Successfully Completed! - Duration: 00:16:29
I 03:27:10 Average Verify Rate: 7,673 KB/s (5.5x) - Maximum Verify Rate: 11,023 KB/s (8.0x)
I can't really test the image as I don't have any dual layer media and have read about the many issues with burning DL media and don't want to go down that road till I have to. What I am interested in is if backing up a Snow Leopard DVD is even supported in ImgBurn and if yes, then did I have to check off any options in ImgBurn's settings other than the default.
The link below is to a screen shot of my desktop displaying side-by-side various properties of the DVD and Image. The DVD is (E) and the Image is (M).
1. DVD drive/Image drive properties shown as 6.19 GB
2. Properties of all files on DVD/Image when show Mac files is elected shown as 6.11 GB
3. Properties of all files on DVD/Image when show Windows files is selected shown as 984 MB
4. The actual image file properties shown as 7.23 GB
Posted 10 September 2009 - 09:55 AM
The ISO is a complete disc image and will contain everything that was on the original disc. The disc is read at sector level remember, not file level.
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