Viewing and oversized ISO DVD

stephenjudge

Hey,

I have a serious problem, I burned a file to a DVD as an ISO, the file was 4.2gigs and I didn't know that the ISO file system can only handle files up to 2gigs. Now the ISO on the DVD is oversized and the file is appearing a quarter of the size that it should be.

I need to find a program that can see through oversized ISO's on DVD's and see the full file size and extract it. This program would have to have the ability not to rely on the Windows viewing to see the file system.

Its most likely I will not find a Windows program to do this, so even a bootable Linux version would work fine.

Any ideas?

deckie27

Winrar

Is ur Man

Dec

stephenjudge

Emm how will WinRAR help me? It is a DVD with an ISO file system not an ISO image and the file that is on it is appearing smaller than it actually is.

Chalk

...
something else

CiaranC

First things id try are DaemonTools, Isobuster or Dvd Decryptor.

Khannie

edit: what he said

Chalk

im thinking maybe the file is still intact just cant be read by the filesystem of the disc,
im not sure if theres anyway to recover it.
if the disc is rewitable you could try the converting the file system,

if the file system can recognise files that big another program wont be able to read it.

Sherifu

ultraiso, cdmage, undisker.

stephenjudge

Chalk wrote:

im thinking maybe the file is still intact just cant be read by the filesystem of the disc,
im not sure if theres anyway to recover it.
if the disc is rewitable you could try the converting the file system,

if the file system can recognise files that big another program wont be able to read it.

This is more or less the case. There are alot of suggections of ISO Image extraction tools, please don't be mistaken. I am not trying to extract an ISO Image. I burned a 4gig file to a DVD in an ISO file structure instead of a UDF file structure which is what I should have used. As a result Windows cannot see the full file size. The full file is there and should be intact Windows is just reading it incorrectly. This why I am looking more towards a Linux tool that can see these oversized ISO file systems on DVD's.

stephenjudge

[font=verdana, arial, helvetica]After reading a bit more, I realize that people may mistake what ISO I am talking about. I do not have an ISO image, what I mean is that I burned my file to a DVD using Nero on the ISO 9660 file system. This file system is associated with burning to CD's and has a file size restriciton of about 2gigs. Some how I managed to burn a 4gig file to the ISO 9660 file system and now Windows can not see it for its true size because it is an oversized ISO 9660 file system. So I need to find a Windows program or a Linux program that can see files on a oversized ISO 9660 CD/DVD.[/font]

sceptre

stephenjudge wrote:

[font=verdana, arial, helvetica]After reading a bit more, I realize that people may mistake what ISO I am talking about. I do not have an ISO image, what I mean is that I burned my file to a DVD using Nero on the ISO 9660 file system. This file system is associated with burning to CD's and has a file size restriciton of about 2gigs.[/font]

Ah, that may make more sense as iso files are certainly readable beyond 2GB in size (I do it all the time).

How about isobuster? It's slightly crippled in its free version (can't do some stuff related to udf files) but will probably do what you need (if it can do it at all the free option will do it). isobuster.com

Khannie

2nd what sceptre said. isobuster's yer man.

stephenjudge

I've tried ISO Buster, but as I expected its no good. ISO Buster looks into ISO files and lets you extract from them. But I am not dealing with an ISO file. I have Drive Image file that is burned onto a DVD in the [font=verdana, arial, helvetica]ISO 9660 file system, this is a file structure like NTFS, FAT and UDF. [/font][font=verdana, arial, helvetica]The ISO 9660 file system is more commonly used for CD's not for DVD's as it cannot handle a file over 2gigs, so Nero should have burned it onto the UDF file system. If it was an ISO image file, that would be no problem, I could use ISO Buster too look into it, but its just a normal file on the wrong file system and Windows is reading it incorrectly.
[/font]

stephenjudge

Hey all again,

I want to try and emphasis how much of a computing crisis I am in and I am desperate for a solution to my problem. Basically I have created 4 DVD's that contain a Norton Ghost Disk image spanned across the 4 DVD's. This image contains the backup of my life's work and it is the only copy I have. I run a charity and all the work I have done for this charity is on this backup, hence my urgency.

What happened is this. I was exchanging my old notebook for a new one, before I did this I used Norton Ghost to create an image of that Hard Drive on my old notebook, so that I could restore it to my new one. The image was 15GB's in size and I set Ghost to split it over 4 DVD sizes. I then used Nero 6 Burning Rom to burn each image part to a DVD. Each image size was just over 4GB's, it took 30 minutes to burn it to a DVD at 2x and there was no errors reported so I assumed they all burned fine. As soon as the burns were done I formatted my hard drive and returned it to the store to collect my new notebook. When I loaded the DVD's in the new notebook I noticed that instead of the files being just over 4GB's in size they were appearing as 305MB's. Needless to say something was wrong there and Norton Ghost could not use the image parts because they were the wrong size.

I took my problem to a friend who is well knowledge in all things computers. He explained that the files were on an ISO 9660 file structure and I should have burned them to a UDF file structure because the ISO 9660 file structure has an upper file size limit of about 2GB's. Windows could not read the file structure properly and see's the files as only 305MB's. Basically its and oversized ISO 9660 file structure and Windows or most Windows based programs cannot read it properly.

So now I am trying to find a program that can see oversized ISO 9660 file structures and allow me to extract the files. It is most likely that I will not find a Windows based program to do this as most of them use the Windows browser to look at the file structure of the disk. So I am looking more for a Linux distribution or a Linux program that can see through all file structures, including oversized ISO 9660's.

If any body can suggest a program or a solution to this that they know will work, I will be eternally grateful. So far ISO Buster, Daemon Tools and using Nero itself have been suggested, but these do not work. ISO Buster and Daemon tools and see into or mount ISO Images, I am not dealing with and ISO Image. I am dealing with files burnt onto the ISO 9660 file structure. Nero itself does not work as it uses Windows to browse the disk.

So please keep thinking and help me find a solution.

Yours gratefully
Stephen Judge

Inspector Gadget

It's a long shot, but UltraISO (.com) might work - they talk about supporting files up to 4GB in an ISO, and since it can read the disk directly too (I think)...?

Gadget

parasite

try mailing the nero people, if they enable someone to burn such files, they might have some clue how to read them

Capt'n Midnight

Stupid question time - is the new laptop EXACTLY the same spec as the old one ? or at least does the new PC have a DVD writer with the same software - if not then try installing that sw first. Are the DVD's burnt out to the edge ? Don't forget that a windows image usually gets very upset if put on different hardware especially if the HDD drivers are different. Do you have access to the old laptop to check if it can read the DVD's ?

The first thing you need to do is copy the 4GB from the DVD's
- some sort of DVD ripper program - the lower level the better.
[anyone got suggestions ? - or the safest linux syntax - dd could be scary !]

At this stage you might want to try some DVD disk copy software - copy the image file generated before you swap the disks into a new folder, at the end you should have a second set of DVD's to keep off-site or hand to someone for them to examine, while keeping the originals somewhere safe until the problem is sorted, and a folder with some very big files.

stephenjudge

Thanks for all the help guys, I forgot I was still subscribed to this thread. In the end the file system format turned out to be totaly screwed up and unreadable. So that was a load of work down the drain. From now on I am not backing up using container files such and Norton Ghost. If I just copy the raw files, at least if the burn slighly messes up some or most of the files will still be recoverable.

Lesson learned :rolleyes: