8.5 Gigabyte CDs have smaller size

[TanMasked]

So, I want to burn an ISO of iATKOS to a CD on Brasero, since you can't flash the ISO onto a USB drive. I have around nine or ten blank CDs that say they have 8.5 gigabytes of storage. But, for some reason, the blank CDs are smaller in storage. I'm not sure if it's a problem on my end or what. Any suggestions on what I can do?

 

[SylverReZ]

In my entire life, I have never seen an 8.5GB CD-R. Only dual-layer DVD-R discs have around 8.5GB. Sony attempted to create the DD CD-R format that can hold 1.3GB which is similar to what you described, however it was never successful, and the discs and drives are very difficult to locate.

Would you mind sharing some photos of these discs?

 

[Alexander1970]

Good Morning.

I have around nine or ten blank CDs that say they have 8.5 gigabytes of storage.

DVD-R ..I think you mean a DVD +/- R Double Layer ?
....or may I have missed something in the last Years under my Stone...

 

[SylverReZ]

DVD-R ..I think you mean a DVD +/- R Double Layer ?
....or may I have missed something in the last Years under my Stone...

Yup, I think they mean a DVD+/-R disc, not a CD-R. Those are entirely different.

 

[TanMasked]

In my entire life, I have never seen an 8.5GB CD-R. Only dual-layer DVD-R discs have around 8.5GB. Sony attempted to create the DD CD-R format that can hold 1.3GB which is similar to what you described, however it was never successful, and the discs and drives are very difficult to locate.

Would you mind sharing some photos of these discs?

Got these from Amazon.

And yes, they are DVD-R. Don't know why I called them CDs, but oh well.

 

[KleinesSinchen]

DVD+R DL should have about 8,500,000,000 Bytes. It results in a little below 8GB of memory.
This is the usual 1000 vs 1024 calculation.

The best you can do is increase it by roughly 200MB with the help of BurnerMAX payload.


Success in this depends on two things:

A) Drive accepting BurnerMAX payload​

B) High quality blanks writeable/readable outside the intended diameter​

I would advise against trusting DVD+R DL burned beyond normal capacity

Anything beyond the value on my second screenshot is out of range for DVD and would require BD when sticking to optical discs.

 

[jumpman17]

Is it about 7.9 GBs of storage space? The difference comes from how computers calculate size vs what companies calculate size as. There are 1024 bytes in a kilobyte, 1024 kilobytes in a megabyte, and 1024 megabytes in a gigabyte. Companies calculate size by saying, eh, 1000 is close enough. It wasn't a big deal back when drives and storage media were small, but as they have become larger, the gap between listed size and actual size only grows.

 

[TanMasked]

DVD+R DL should have about 8,500,000,000 Bytes. It results in a little below 8GB of memory.
This is the usual 1000 vs 1024 calculation.

The best you can do is increase it by roughly 200MB with the help of BurnerMAX payload.
View attachment 419553 View attachment 419552

Success in this depends on two things:

A) Drive accepting BurnerMAX payload​

B) High quality blanks writeable/readable outside the intended diameter​

I would advise against trusting DVD+R DL burned beyond normal capacity

Anything beyond the value on my second screenshot is out of range for DVD and would require BD when sticking to optical discs.

I forgot to mention that I use Ubuntu, the Debian-based Linux distribution. Could that be the problem, or is it the DVD reader I'm using?

 

[KleinesSinchen]

I forgot to mention that I use Ubuntu, the Debian-based Linux distribution. Could that be the problem, or is it the DVD reader I'm using?

Please open terminal and run

dvd+rw-mediainfo /dev/sr0​

assuming the blank DVD is in sr0

This should show number of available sectors.
Despite being almost exclusive Linux user I do optical disc copying, authoring and burning only on Windows XP. No idea how to send BurnerMAX payload on Ubuntu. IMGBurn under Wine might work, but it requires additional steps to set it up and have it detect the optical drive(s) running on Linux.

 

[TanMasked]

Please open terminal and run

dvd+rw-mediainfo /dev/sr0​

assuming the blank DVD is in sr0

This should show number of available sectors.
Despite being almost exclusive Linux user I do optical disc copying, authoring and burning only on Windows XP. No idea how to send BurnerMAX payload on Ubuntu. IMGBurn under Wine might work, but it requires additional steps to set it up and have it detect the optical drive(s) running on Linux.

So I had to install "dvd+rw-tools" from the Terminal when trying the command prompt for the first time, then after installing "dvd+rw-tools" and running the command again, I got this:
"/dev/sr0: unable to open: No such file or directory"
Is it because I'm using an external DVD/CD reader?

 

[KleinesSinchen]

Puh.

What is the device called then? Maybe the symlink /dev/cdrom or /dev/dvd exists?

Maybe monitor journalctl -f in another terminal while connecting the drive (this delivers sr0 within all the messages in my case)

The output is supposed to look like this:
dvd+rw-mediainfo /dev/sr0 INQUIRY: [HL-DT-ST][DVDRAM GP57EW40 ][RF01] GET [CURRENT] CONFIGURATION: Mounted Media: 2Bh, DVD+R Double Layer Media ID: RITEK/S04 Current Write Speed: 6.0x1385=8310KB/s Write Speed #0: 6.0x1385=8310KB/s Write Speed #1: 4.0x1385=5540KB/s Write Speed #2: 3.0x1385=4155KB/s Speed Descriptor#0: 00/4173823 [email protected]=5540KB/s [email protected]=8310KB/s Speed Descriptor#1: 00/4173823 [email protected]=5540KB/s [email protected]=5540KB/s Speed Descriptor#2: 00/4173823 [email protected]=5540KB/s [email protected]=4155KB/s READ DVD STRUCTURE[#0h]: Media Book Type: 00h, DVD-ROM book [revision 0] Legacy lead-out at: 2086912*2KB=4273995776 DVD+R DOUBLE LAYER BOUNDARY INFORMATION: L0 Data Zone Capacity: 2086912*2KB, can still be set READ DISC INFORMATION: Disc status: blank Number of Sessions: 1 State of Last Session: empty "Next" Track: 1 Number of Tracks: 1 READ TRACK INFORMATION[#1]: Track State: blank Track Start Address: 0*2KB Next Writable Address: 0*2KB Free Blocks: 4173824*2KB Track Size: 4173824*2KB ROM Compatibility LBA: 265936 READ CAPACITY: 0*2048=0

 

[TanMasked]

Puh.

What is the device called then? Maybe the symlink /dev/cdrom or /dev/dvd exists?

Maybe monitor journalctl -f in another terminal while connecting the drive (this delivers sr0 within all the messages in my case)

The output is supposed to look like this:
dvd+rw-mediainfo /dev/sr0 INQUIRY: [HL-DT-ST][DVDRAM GP57EW40 ][RF01] GET [CURRENT] CONFIGURATION: Mounted Media: 2Bh, DVD+R Double Layer Media ID: RITEK/S04 Current Write Speed: 6.0x1385=8310KB/s Write Speed #0: 6.0x1385=8310KB/s Write Speed #1: 4.0x1385=5540KB/s Write Speed #2: 3.0x1385=4155KB/s Speed Descriptor#0: 00/4173823 [email protected]=5540KB/s [email protected]=8310KB/s Speed Descriptor#1: 00/4173823 [email protected]=5540KB/s [email protected]=5540KB/s Speed Descriptor#2: 00/4173823 [email protected]=5540KB/s [email protected]=4155KB/s READ DVD STRUCTURE[#0h]: Media Book Type: 00h, DVD-ROM book [revision 0] Legacy lead-out at: 2086912*2KB=4273995776 DVD+R DOUBLE LAYER BOUNDARY INFORMATION: L0 Data Zone Capacity: 2086912*2KB, can still be set READ DISC INFORMATION: Disc status: blank Number of Sessions: 1 State of Last Session: empty "Next" Track: 1 Number of Tracks: 1 READ TRACK INFORMATION[#1]: Track State: blank Track Start Address: 0*2KB Next Writable Address: 0*2KB Free Blocks: 4173824*2KB Track Size: 4173824*2KB ROM Compatibility LBA: 265936 READ CAPACITY: 0*2048=0

It's a "Rioddas" branded external CD/DVD player. Got it from Amazon, similar to the blank DVDs.

 

[Ryccardo]

It wasn't a big deal back when drives and storage media were small,

...also because (if we ignore 1440 and 2880 kB floppies) they didn't try to rip people off with decimal kilobytes until the mid 90s when they were already into the multiple GBs

 

[TanMasked]

Also, might I add, the reason why I can't burn the iATKOS ISO onto a USB Flash Drive is because of this specific error:

 

[KleinesSinchen]

...also because (if we ignore 1440 and 2880 kB floppies) they didn't try to rip people off with decimal kilobytes until the mid 90s when they were already into the multiple GBs

What is with the floppies? You can get a standard 3.5" HD floppy to about 2000KB of uncompressed available memory despite being advertised as 1.44MB and actually formatted to 1.37MB or 1.38MB most of the time.
Even Microsoft went further than that with DMF disks.
I wish I had some ED drives and floppies (and while we're at it LS120 and LS240)

*cough*
*Stop it, Sinchen*
*cough*​

Back to topic:

It's a "Rioddas" branded external CD/DVD player. Got it from Amazon, similar to the blank DVDs.

Not important what brand it is. I've no idea why it doesn't show up as /dev/sr0. Again, try /dev/cdrom and /dev/dvd
Sometimes one or both of them is/are created as symlinks to the actual device. Maybe K3B can detect the drive automatically. It is hard to give advise here.

A desktop PC with Windows XP and some full-sized optical drives will do much better than some Ubuntu machine with strange USB slim drives.

 

[Ryccardo]

advertised as 1.44MB

They solved the binary vs decimal argument by being 1,44 * 1000 * 1024 B

 

[Alexander1970]

iATKOS ISO

May I ask you please,where you get that ? The Images I found on archive.org are not bigger than 6 GB.

 

[TanMasked]

May I ask you please,where you get that ? The Images I found on archive.org are not bigger than 6 GB.

https://archive.org/details/iatkosv2
When it comes to the 8.5 gigabytes in size, I was referring to the DVDs.

 

[The Real Jdbye]

Also, might I add, the reason why I can't burn the iATKOS ISO onto a USB Flash Drive is because of this specific error:
View attachment 419756

Try Rufus, in "dd" mode.

 

[TanMasked]

Try Rufus, in "dd" mode.

I'm on Linux.