Incorrect BD-RE SL disc size

[Ch3vr0n]

I hope this is the correct section.

 

I've just bought me a brand new BD-RE SL and popped it into my BH10LS20 for burning. From what i know a standard disc holds 23.3 GB. However with the default? settings IMGBurn used windows explorer shows the maximum capacity of 22.5GB. That's roughly 800MB undersized and enough to render the disc unuseable for some iso's made by BD-Rebuilder that slightly superseed that 22.5GB mark. Since it was brand new it came empty and unformatted. Below is the IMGBurn log & discs specs. Disc was formatted & immediately followed by an iso burn to disc. Speed also is something weird, according to the disc properties 10.338kb/sec is 2.4x. However the disc gets burnt at 10.512 KB/s wich is 2.3x? How can a speed that is slightly higher in KB/sec be lower in speed, 2.3x versus the 10.338 being 2.4x

 

Format & Burn log:

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

; ImgBurn Version 2.5.6.0 - Log

; zondag, 20 november 2011, 18:03:44

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

;

;

I 15:32:55 ImgBurn Version 2.5.6.0 started!

I 15:32:55 Microsoft Windows Vista Ultimate x64 Edition (6.0, Build 6002 : Service Pack 2)

I 15:32:55 Total Physical Memory: 8.386.684 KB - Available: 5.495.228 KB

W 15:32:55 AnyDVD can interfere with ImgBurn's ability to verify accurately, please ensure it's disabled!

I 15:32:55 Initialising SPTI...

I 15:32:55 Searching for SCSI / ATAPI devices...

I 15:32:56 -> Drive 1 - Info: HL-DT-ST BD-RE BH08LS20 2.00-01 (F:) (ATA)

I 15:32:56 -> Drive 2 - Info: HL-DT-ST BD-RE BH10LS30 1.01-A0 (E:) (ATA)

I 15:32:56 -> Drive 3 - Info: HL-DT-ST DVDRAM GH20NS10 EL01 (G:) (ATA)

I 15:32:56 -> Drive 4 - Info: ELBY CLONEDRIVE 1.4 (L:) (SCSI)

I 15:32:56 Found 1 DVD±RW/RAM, 1 BD-ROM/HD DVD-ROM and 2 BD-REs!

I 15:36:02 Operation Started!

I 15:36:02 Device: [0:0:0] HL-DT-ST BD-RE BH10LS30 1.01 (E:) (ATA)

I 15:36:02 Media Type: BD-RE (Disc ID: RITEK-BW1-001)

I 15:36:02 Media Supported Write Speeds: 2,4x

I 15:36:02 Quick Erase: No

I 15:36:02 Format Properly: Yes

I 15:36:02 Format Size: Preferred

I 15:36:02 Format With Full Certification: Yes

I 15:36:02 Format Without Spare Areas: Yes

I 15:36:02 Erasing Disc...

I 16:45:29 Operation Successfully Completed! - Duration: 01:09:26

I 16:45:29 Operation Started!

I 16:45:29 Device: [0:0:0] HL-DT-ST BD-RE BH10LS30 1.01 (E:) (ATA)

I 16:45:29 Media Type: BD-RE (Disc ID: RITEK-BW1-001)

I 16:45:29 Media Supported Write Speeds: 2,4x

I 16:45:29 Media Sectors: 12.219.392

I 16:45:29 BD-RE FastWrite: Yes

I 16:45:29 Zeroing Sectors...

I 17:26:30 Synchronising Cache...

I 17:26:30 Operation Successfully Completed! - Duration: 00:41:01 - Total Duration: 01:50:28

I 17:26:30 Average Write Rate: 9.930 KB/s (2.2x)

I 17:26:32 Operation Started!

I 17:26:32 Source File: Z:\Blu-Ray\Single Layer\GHTTG_G52.iso

I 17:26:32 Source File Sectors: 11.058.240 (MODE1/2048)

I 17:26:32 Source File Size: 22.647.275.520 bytes

I 17:26:32 Source File Volume Identifier: GHTTG_G52

I 17:26:32 Source File Volume Set Identifier: 8CD377555BCAC971_VOLUME_SET_ID

I 17:26:32 Source File Application Identifier: APPLICATION_ID

I 17:26:32 Source File Implementation Identifier: IMPLEMENTATION_ID

I 17:26:32 Source File File System(s): UDF (2.50)

I 17:26:32 Destination Device: [0:0:0] HL-DT-ST BD-RE BH10LS30 1.01 (E:) (ATA)

I 17:26:32 Destination Media Type: BD-RE (Disc ID: RITEK-BW1-001)

I 17:26:32 Destination Media Supported Write Speeds: 2,4x

I 17:26:32 Destination Media Sectors: 12.219.392

I 17:26:32 Write Mode: BD

I 17:26:32 Write Type: DAO

I 17:26:32 Write Speed: MAX

I 17:26:32 BD-RE FastWrite: Yes

I 17:26:32 Link Size: Auto

I 17:26:32 Lock Volume: Yes

I 17:26:32 Test Mode: No

I 17:26:32 OPC: No

I 17:26:32 BURN-Proof: Enabled

I 17:26:32 Write Speed Successfully Set! - Effective: 10.338 KB/s (2,4x)

I 17:26:32 Filling Buffer... (40 MB)

I 17:26:33 Writing LeadIn...

I 17:26:33 Writing Session 1 of 1... (1 Track, LBA: 0 - 11058239)

I 17:26:33 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 11058239)

I 18:03:38 Synchronising Cache...

I 18:03:43 Operation Successfully Completed! - Duration: 00:37:06

I 18:03:43 Average Write Rate: 9.944 KB/s (2.2x) - Maximum Write Rate: 10.512 KB/s (2.3x)

I 18:03:43 Close Request Acknowledged

I 18:03:43 Closing Down...

I 18:03:44 Shutting down SPTI...

I 18:03:44 ImgBurn closed!

;

;

 

 

Maxell BD-RE SL disc specs

 

HL-DT-ST BD-RE BH10LS30 1.01 (ATA)

Current Profile: BD-RE

 

Disc Information:

Status: Complete

State of Last Session: Complete

Erasable: Yes

Sessions: 1

Sectors: 12.219.392

Size: 25.025.314.816 bytes

Time: 2715:27:17 (MM:SS:FF)

Supported Write Speeds: 2,4x

 

TOC Information:

Sessie 1... (LBA: 0)

-> Track 01 (Mode 1, LBA: 0 - 12219391)

-> LeadOut (LBA: 12219392)

 

Disc Definition Structure:

Certified: Yes - Full

Scanned: No

 

BD Disc Information:

Disc ID: RITEK-BW1-001

Disc Type: BD-RE

Disc Size: 120mm

Disc Class: 0

Disc Version: 2

Number of Layers: 1

Layer Type: Rewritable

DVD Layer Present: No

CD Layer Present: No

Channel Bit Length: 74.50nm (25GB Per Layer)

BCA Present: Yes

Maximum Transfer Rate: Not Specified

First PAA of Data Zone: 131.072

Last PAA of Data Zone: 1.658.494

 

Format Capacities:

DT: 0x02 - NB: 12219392 (0x00BA7400) - TDP: 0

FT: 0x00 - NB: 11826176 (0x00B47400) - TDP: 12288

FT: 0x01 - NB: 11564032 (0x00B07400) - TDP: 2048

FT: 0x30 - NB: 11826176 (0x00B47400) - TDP: 12288

FT: 0x30 - NB: 11564032 (0x00B07400) - TDP: 20480

FT: 0x30 - NB: 12088320 (0x00B87400) - TDP: 4096

FT: 0x31 - NB: 12219392 (0x00BA7400) - TDP: 2048

 

Performance (Write Speed):

Descriptor 1...

-> B0: 0x02; B1: 0x00; B2: 0x00; B3: 0x00

-> EL: 12219391 (0x00BA73FF)

-> RS: 35.903 KB/s (8x) - WS: 10.338 KB/s (2,4x)

[LIGHTNING UK!]

That's all fine and perfectly normal.

 

The disc has been formatted to the maximum capacity.

 

Disc Information:

Status: Complete

State of Last Session: Complete

Erasable: Yes

Sessions: 1

Sectors: 12.219.392

 

Format Capacities:

DT: 0x02 - NB: 12219392 (0x00BA7400) - TDP: 0

FT: 0x00 - NB: 11826176 (0x00B47400) - TDP: 12288

FT: 0x01 - NB: 11564032 (0x00B07400) - TDP: 2048

FT: 0x30 - NB: 11826176 (0x00B47400) - TDP: 12288

FT: 0x30 - NB: 11564032 (0x00B07400) - TDP: 20480

FT: 0x30 - NB: 12088320 (0x00B87400) - TDP: 4096

FT: 0x31 - NB: 12219392 (0x00BA7400) - TDP: 2048

 

As for the speed, it's not an exact science. Different drives use different values to mean the same thing and so it makes using a single calculation to go from KB -> Speed a bit hit and miss. The speed descriptors reported by the drive are also only accurate to +- 10%.

 

Performance (Write Speed):

Descriptor 1...

-> B0: 0x02; B1: 0x00; B2: 0x00; B3: 0x00

-> EL: 12219391 (0x00BA73FF)

-> RS: 35.903 KB/s (8x) - WS: 10.338 KB/s (2,4x)

 

Going by the figures your drive returns and taking 1x BD speed to equal 4495 kB/s (1kB = 1000 bytes)...

 

35903 / 4495 = 7.9873192436040044493882091212458

10338 / 4495 = 2.2998887652947719688542825361513

 

35903 / 8 = 4487.875

10338 / 2.3 = 4494.7826086956521739130434782609

 

So where ImgBurn calls it 2.4x in the current version is probably wrong, it should say 2.3x instead. It's caused by the program using a 2nd calculation (based on a slightly different 1x speed) if the first doesn't end up at a whole number (i.e. 2x, 3x, 4x etc, because speeds typically are). I've now made the program only use the result of the 2nd calculation if its result is a whole number, otherwise it just sticks with the result of the 1st one.

 

Compare those speed values/calculations to what something like an iHBS112 returns...

 

Performance (Write Speed):

Descriptor 1...

-> B0: 0x00, B1: 0x00, B2: 0x00, B3: 0x00

-> EL: 12219391 (0x00BA73FF)

-> RS: 35,960 KB/s (8x) - WS: 8,990 KB/s (2x)

 

35960 / 4495 = 8

8990 / 4495 = 2

 

35960 / 8 = 4495

8990 / 2 = 4495

 

Clearly those are much nicer to work with!

 

And then back to an LG drive (BH12LS38) for a BD-RE DL disc...

 

Performance (Write Speed):

Descriptor 1...

-> B0: 0x02, B1: 0x00, B2: 0x00, B3: 0x00

-> EL: 24438783 (0x0174E7FF)

-> RS: 21,668 KB/s (4.8x) - WS: 8,991 KB/s (2x)

 

21668 / 4495 = 4.8204671857619577308120133481646

8991 / 4495 = 2.0002224694104560622914349276974

 

21668 / 4.8 = 4514.1666666666666666666666666667

8991 / 2 = 4495.5

[Ch3vr0n]

If it's formatted to the maximum capacity, then why do BD-R SL's do have 23.3GB to be used. Or is that one of the many small differences between the 2 subsections of the BD recordable standard

[LIGHTNING UK!]

BD-R and BD-RE (formatted to max capacity - i.e. spare areas disabled) are exactly the same size.

 

They both end up with 12219392 sectors available for use.

 

12219392 * 2048 = 25,025,314,816 bytes

/ 1024 = 24,438,784 KB

/ 1024 = 23,866 MB

/ 1024 = 23.306640625 GB

 

So there's your 23.3 GB.

[Ch3vr0n]

I did that math myself too. I just don't understand why the BD-R shows up with 23.3GB and the BD-RE as 22,5. If the amount of sectors is the same then the BD-RE should also show in explorer as having a disc capacity of 23.3GB. I check when IMGB was done with formatting and before the ISO burn began and it showed as 22.5GB effective capacity. Is there a setting in IMGB i can change (reformat) to change the BD-RE available disc size to 23.3GB? That 800MB difference has to go somewhere

[LIGHTNING UK!]

Disc Information:

Status: Complete

State of Last Session: Complete

Erasable: Yes

Sessions: 1

Sectors: 12.219.392

Size: 25.025.314.816 bytes

Time: 2715:27:17 (MM:SS:FF)

Supported Write Speeds: 2,4x

 

If ImgBurn is still listing the size as 12219392 then you have nothing to worry about - just ignore Explorer, it's talking rubbish.

[Ch3vr0n]

Well i'll guess this is solved for now then. I'll report back when i backup a new disc and the backup exceends the 22.5GB mark. We'll see what IMGBurn has to say when i try to burn it to the RE. I visit my video store weekly on friday, they know to expect me for new releases . With some luck i'll be able to report back during or after the weekend. Thx for the support/explanation so far