Disc Size 2kb Larger than Iso Size

[TigerSoul]

Hi ppl!

 

I'm burning a dual layer disc for a xbox360 game. Everything went fine, but the reported disc size in verify mode (the report to the right) states a larger size than the iso file size. It's 2048 bytes larger. Why is this? Is it some form of padding or overhead etc or didn't I get a perfect disc? if it is some form of padding or overhead, is this something selectable or mandatory and needed? I'm looking for a perfect 1:1 disc due to obvious reasons

 

Kristian

[dontasciime]

post the log

[TigerSoul]

Sorry should have done that... here is the log:

 

; //****************************************\\

; ImgBurn Version 2.4.0.0 - Log

; måndag, 11 februari 2008, 12:33:20

; \\****************************************//

;

;

I 11:32:40 ImgBurn Version 2.4.0.0 started!

I 11:32:40 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 2)

I 11:32:40 Total Physical Memory: 2 096 352 KB - Available: 1 690 324 KB

I 11:32:40 Initialising SPTI...

I 11:32:40 Searching for SCSI / ATAPI devices...

I 11:32:40 Found 2 DVD-ROMs and 1 DVD±RW!

I 11:36:35 Operation Started!

I 11:36:35 Source File: D:\NoBackup\Outgoing\XBOX360\Tom_Clancys_Ghost_Recon_Advanced_Warfighter_Premium_Edition_PAL_XBOX360-SuperX360\sx-grawpe.dvd

I 11:36:35 Source File Sectors: 3 825 631 (MODE1/2048)

I 11:36:35 Source File Size: 7 834 892 288 bytes

I 11:36:35 Source File Volume Identifier: XBOX360

I 11:36:35 Source File Volume Set Identifier: 33479a57

I 11:36:35 Source File Implementation Identifier: Daikin U.S. Comtec Lab

I 11:36:35 Source File File System(s): ISO9660; UDF (1.02)

I 11:36:35 Destination Device: [1:1:0] PIONEER DVD-RW DVR-115D 1.18 (F:) (ATA)

I 11:36:35 Destination Media Type: DVD+R DL (Disc ID: MKM-001-00) (Speeds: 2,4x; 4x; 6x; 8x)

I 11:36:35 Destination Media Sectors: 4 173 824

I 11:36:35 Write Mode: DVD

I 11:36:35 Write Type: DAO

I 11:36:35 Write Speed: 2,4x

I 11:36:35 Link Size: Auto

I 11:36:35 Test Mode: No

I 11:36:35 OPC: Yes

I 11:36:35 BURN-Proof: Enabled

W 11:36:35 DeviceIoControl(IOCTL_STORAGE_MCN_CONTROL) Failed! - Media change notification has NOT been disabled.

I 11:37:11 User Specified L0 Data Zone Capacity: 1 913 760

I 11:37:11 Filling Buffer... (40 MB)

I 11:37:12 Writing LeadIn...

I 11:37:14 Writing Session 1 of 1... (1 Track, LBA: 0 - 3825630)

I 11:37:14 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 3825630)

I 11:37:14 Writing Layer 0... (LBA: 0 - 1913759)

I 11:57:15 Writing Layer 1... (LBA: 1913760 - 3825630)

I 12:17:26 Synchronising Cache...

I 12:17:27 Closing Track...

I 12:17:33 Finalising Disc...

I 12:18:33 Image MD5: 50de15ce75de1b2f39bf6dd8f044c82b

I 12:18:33 Operation Successfully Completed! - Duration: 00:41:58

I 12:18:33 Average Write Rate: 3 173 KB/s (2.3x) - Maximum Write Rate: 3 360 KB/s (2.4x)

I 12:18:33 Cycling Tray before Verify...

I 12:19:05 Device Ready!

I 12:19:05 Operation Started!

I 12:19:05 Source Device: [1:1:0] PIONEER DVD-RW DVR-115D 1.18 (F:) (ATA)

I 12:19:05 Source Media Type: DVD+R DL (Book Type: DVD-ROM) (Disc ID: MKM-001-00) (Speeds: 2,4x; 4x; 6x; 8x)

I 12:19:05 Image File: D:\NoBackup\Outgoing\XBOX360\Tom_Clancys_Ghost_Recon_Advanced_Warfighter_Premium_Edition_PAL_XBOX360-SuperX360\sx-grawpe.dvd

I 12:19:05 Image File Sectors: 3 825 631 (MODE1/2048)

I 12:19:05 Image File Size: 7 834 892 288 bytes

I 12:19:05 Image File Volume Identifier: XBOX360

I 12:19:05 Image File Volume Set Identifier: 33479a57

I 12:19:05 Image File Implementation Identifier: Daikin U.S. Comtec Lab

I 12:19:05 Image File File System(s): ISO9660; UDF (1.02)

I 12:19:05 Read Speed (Data/Audio): MAX / MAX

I 12:19:05 Verifying Session 1 of 1... (1 Track, LBA: 0 - 3825630)

I 12:19:05 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 3825630)

I 12:19:05 Verifying Layer 0... (LBA: 0 - 1913759)

I 12:24:43 Verifying Layer 1... (LBA: 1913760 - 3825630)

I 12:30:16 Device MD5: 50de15ce75de1b2f39bf6dd8f044c82b

I 12:30:16 Device (Padded) MD5: 759efc66a7fa2dc433b95d927ddc6c6b

I 12:30:16 Image MD5: 50de15ce75de1b2f39bf6dd8f044c82b

I 12:30:16 Operation Successfully Completed! - Duration: 00:11:10

I 12:30:16 Average Verify Rate: 11 419 KB/s (8.2x) - Maximum Verify Rate: 16 462 KB/s (11.9x)

I 12:33:20 Close Request Acknowledged

I 12:33:20 Closing Down...

I 12:33:20 Shutting down SPTI...

I 12:33:20 ImgBurn closed!

[LIGHTNING UK!]

DVD+ (plus) format media will always burn so the total number of sectors is divisible by 16 (the size of an ECC block).

 

The drive does this itself.

[TigerSoul]

Ok so then this burn is 100% correct. I'm concerned with having a 100% 1:1 disc as it is an xbox 360 disc (I'm sure you understand the reason).

The thing I don't like here is that this "padding" must be readable by the drive together with the data, and that must mean that an image that is perfectly dividable by 16 which does not require padding is more 1:1 than an image that ISN'T dividiable with 16, thus requiring padding to be burned. Or am I wrong?

 

An even harder question: is this padding only used on BURNED discs or is it used on pressed originals aswell?

 

Thank you for your time!

[LIGHTNING UK!]

Assuming the image is correct in the first place, you've nothing to worry about. Everyone is in the same boat because they all use DVD+R DL media and all the drives will pad out to the nearest ECC block.

[TigerSoul]

Yes they will, but do get into a little more detail.

 

The xbox 360 scene has used the xtreme 3.0 rip format for quite some time, it does not use splitvid. These iso's are always of this size: 7,572,881,408 bytes. While the new splitvid format iso's are of one of these sizes:

7,835,492,352 or 7,834,892,288 bytes

 

According to my calculations, the old xtreme 3.0 rips doesn't NEED padding since they can be divided by 16, while the new splitvid rips DOES need padding. This is my concern here. Of course nobody can tell whatever the padding difference will ever be an issue I'm just trying to understand what is the best to use. Or did I get this wrong? will the old format (7,572,881,408 bytes) also STILL be padded?

 

Kristian

[LIGHTNING UK!]

Anything that's not divisible by 16 (sectors) will be padded by the drive when you burn to DVD+ media. That's it, end of story!

 

It's not for me to know/say if the xbox guys have taken that into account, you'll have to run that by them.

[TigerSoul]

Yeah I guess Thanks alot for the answers!