trying to burn a disk image

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Level 1

118 points

trying to burn a disk image

I created a disk image .iso using DeVeDe on a linux machine. Now I'm trying to burn that image to a dvd on my Mac computer using "Disk Utility".

The .iso is 4.4GB, using a DVD-R that holds 4.7GB. It's saying the DVD isn't large enough to burn the file.

According to my calculations, there are 0.3GB more space than I need on the DVD!

Why is it saying the DVD doesn't have enough space to burn the file?

 Macbook Pro  2.2 GHz Intel Core 2 Duo  2 GB 667 MHz DDR2 SDRAM , Mac OS X (10.5.4), QuickTime Pro

Posted on Oct 13, 2008 8:49 AM

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Answer 1

Best reply

Kappy

Level 10

361,741 points

Oct 13, 2008 8:58 AM in response to _Eric_

It may be because you are trying to burn the disc to a DVD that will be formatted for a Mac, which you don't want. The Mac format will require space for the directories and that is probably why you get the error. Instead duplicate the disc as follows:

Duplicate a CD or DVD

1. Insert the DVD/CD;
2. Open Disk Utility, and select the DVD/CD from the left side list (select the DVD/CD icon on top);
3. from the DU File menu select New | Disk Image from Disk 1;
4. Choose to format the disk image as DVD/CD Master, name the disk image and click Save;
5. When the .cdr file is finished select it with mouse and press COMMAND-I to open the Get Info and check the box to lock the file;
6. Choose the .cdr file from the left side list, click Burn, and insert a new, blank DVD or CD.

The disc will have the .cdr extension which you want to change to .iso before burning.

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Answer 2

Oct 13, 2008 10:22 AM in response to _Eric_

It's possible that Disk Utility is right. The capacity of a single-layer DVD is 4,700,372,992 bytes (which the manufacturer will identify at 4.7GB, even though that's not what computers will report). If you use the common software convention of 1 GB is 2^30 bytes (what operating systems and software use when reporting the size of files/disks), that's 4.38 gigabytes. If the operating system indicates that your image is really 4.40GB, that would be 4,724,464,026 bytes, which is about 0.5% over the limit. In any event, it's REALLY close.

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Answer 3

gumsie

Level 4

2,179 points

Oct 13, 2008 10:38 AM in response to J D McIninch

There's no 'is it possible' about it. You are spot on.

To the OP, look at your hard disk capacity you'll find it's not reported by the OS as the same size that is given on the Apple website, (unless you read the small print).

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Answer 4

nerowolfe

Level 6

13,090 points

Oct 13, 2008 11:56 AM in response to _Eric_

Eric wrote:
I created a disk image .iso using DeVeDe on a linux machine. Now I'm trying to burn that image to a dvd on my Mac computer using "Disk Utility".

The .iso is 4.4GB, using a DVD-R that holds 4.7GB. It's saying the DVD isn't large enough to burn the file.

According to my calculations, there are 0.3GB more space than I need on the DVD!

Why is it saying the DVD doesn't have enough space to burn the file?

You are ignoring "head room" that DVDs need for titles, indexing, etc. The finalizing process also adds to the space. If you don't leave 5% or so you are looking at burning a coaster.

However, there are some burners, such as Toast, that can compress the file sufficiently to fit on a single DVD. I have written 6 GB movie files to a single DVD. Naturally the quality suffers but if it's an old movie or one DLs from the net, it's moot.
This only applies to movies etc., never to a data DVD which has to be copied perfectly, bit for bit.

Message was edited by: nerowolfe

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Answer 5

_Eric_ Author

Level 1

118 points

Oct 13, 2008 4:11 PM in response to nerowolfe

@ Kappy , I'm not duplicating a DVD, I'm making one. The app DeVeDe was used to take .avi files and a menu, and put it all in DVD format on a .iso file for future burning.

@ nerowolfe, "titles, indexing, etc." is already included on the .iso file. So all that has been factored into the file size of the .iso I can play the .iso in VLC Player and it shows exactly as it should look in a DVD player, with the menus, titles, etc. I don't have Toast, and not really looking to buy it since I already have DVD Studio Pro. However, when I originally tried to use DVDSP it wouldn't make the DVD claiming the filesize was too large, for just ONE of the .avi files (the file was only 600MB in size), claiming it was over 4.7GB. So that's why I used DeVeDe on a linux machine to make the .iso file (I was able to get the two movies, plus the menus, all compressed to 4.4GB using DeVeDe)

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Answer 6

gumsie

Level 4

2,179 points

Oct 13, 2008 11:42 PM in response to _Eric_

Only ever started and not finished with it but how about iDVD?

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Answer 7

KJK555

Level 4

2,900 points

Oct 14, 2008 12:09 AM in response to _Eric_

Convert the iso to a .cdr file before burning.

If it is too large it will automatically format it to fit a dual layer dvd.

Kj

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Answer 8

Oct 14, 2008 10:49 AM in response to KJK555

.cdr and .iso are the same. There's no conversion. There's no format difference between single and dual-layer either, it's the same. The only difference is the capacity of the media (at least as far as the software is concerned).

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Answer 9

KJK555

Level 4

2,900 points

Oct 14, 2008 4:17 PM in response to J D McIninch

Sure, whatever, if you say so.

I guess thats why when I recently burned an iso to disk it placed the iso as a single
file on the disk I burned. This Apple, not Nero.

Kj

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Answer 10

Oct 14, 2008 6:52 PM in response to KJK555

I guess thats why when I recently burned an iso to disk it placed the iso as a single

file on the disk I burned.
That happens if you use Finder, instead of Disk Utility, to burn a .iso file.

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Answer 11

nerowolfe

Level 6

13,090 points

Oct 14, 2008 8:15 PM in response to _Eric_

Eric wrote:

@ nerowolfe, "titles, indexing, etc." is already included on the .iso file. So all that has been factored into the file size of the .iso I can play the .iso in VLC Player and it shows exactly as it should look in a DVD player, with the menus, titles, etc. I don't have Toast, and not really looking to buy it since I already have DVD Studio Pro. However, when I originally tried to use DVDSP it wouldn't make the DVD claiming the filesize was too large, for just ONE of the .avi files (the file was only 600MB in size), claiming it was over 4.7GB. So that's why I used DeVeDe on a linux machine to make the .iso file (I was able to get the two movies, plus the menus, all compressed to 4.4GB using DeVeDe)

4.3 GB is about right for a blank DVD. Check this out:
http://club.cdfreaks.com/f33/actual-size-dvd-r-4-7gb-139256/

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