Size limit on ISO 9660 files?

[jenni23]

Too Big? I split a True Image BU file. The largest is 4550 MB (TI split this specifically for DVDs). When tried to burn to DVD, ImgBurn said there's a size limit of something like 4200 MB for ISO 9660 files, I think (obviously < 4550 MB).

 

Never run across this before, but never burned a file that big that wasn't being spanned across multiple disks.

 

What's the deal w/ the ImgBurn message on file size?

Also, does ImgBurn not have option to span CDs / DVDs?

 

If archiving HDD BUs to DVD, what would you suggest as how to use ImgBurn, or is it suitable for this? Normally, w/ other burning prgms, I wouldn't bother splitting the files - just let them span disks.

 

Oh yeah, is there no user manual for ImgBurn?

 

Thanks.

Edited September 24, 2007 by jenni23

[dontasciime]

user manual / Guides section

 

try with 9660 + UDF

 

actually split them to 4400

 

 

[edit] or use dual layer

[jenni23]

Thanks dontasciime,

I believe ISO 9660 + UDF was used (by default?).

 

Why the file size limit so far below the 4.7 GB capacity of DVD?

 

Is ImgBurn able to span CDs / DVDs?

 

If archiving HDD BUs to DVD, which would almost always be > 4.7GB or even 4.4GB, what settings would be best, i.e., ISO 9660 or ISO 9660 + UDF, or...?

 

Re: Guides / user manual section in forum

If the 9 or so mini tutorials are what are available, not much of a manual for such a powerful prgm w/ menu after menu of selectable options.

 

I saw nothing in those guides, in the prgm or by searching the forum that discussed limiting / splitting large files to 4400 MB, as you mentioned. Where did you get that info?

 

Thanks.

[LIGHTNING UK!]

Splitting isn't the issue here.

 

The ISO9660 file system has a limitation whereby it cannot contain files that are 4GB (or larger) in size.

 

This isn't anything to do with ImgBurn, it's just part of the specs for those file systems.

 

If you want to burn huge files onto a discs like that then you need to use 'UDF' on it's own.

[dontasciime]

I saw nothing in those guides, in the prgm or by searching the forum that discussed limiting / splitting large files to 4400 MB, as you mentioned. Where did you get that info?

 

I meant 4200

 

I thought 4.2gb would be OK with you mentioning the warning of 4200 but 4 gig is the limit

 

you could look for software that uses ISO 9660 Level 3 mkisofs springs to mind

[jenni23]

Splitting isn't the issue here.

Seems to me it's the biggest issue, whether using ImgBurn or any other.

 

Acronis True Image 10 offers to automatically split the backup images as they're created to allow for transferring (later) to DVD. Or you can manually specify split size. When I choose "automatically split", in one instance, & it split into 2 files sized 4550 & 4316 MB. I'm not sure why a mainstream prgm like it would do this, if basically no burning prgm (because of standards) will handle burning a file that large.

 

Nero 7 will apparently burn UDF files > 4 / 4.2GB (seems to accept at least 4550 MB), though I've not completed burning & then trying to restore my HDD from them.

 

The ISO9660 file system has a limitation whereby it cannot contain files that are 4GB (or larger) in size.

If you want to burn huge files onto a discs like that then you need to use 'UDF' on it's own.

Thanks. Are there drawbacks to using UDF for purposes I'm talking about?

[LIGHTNING UK!]

Well to read any file system you need a file system parser (these are normally built in).

 

Windows can parse UDF just fine but I doubt anything command line based will do.

 

ISO9660 on the other hand, can be read by just about everything.