Support files greater 4GB at ISO9660 file system

[Oskar]

Hello,

 

please include files greater 4GB to ISO9660 file system.

 

ECMA 119 http://www.ecma-international.org/publicat...st/ECMA-119.pdf

9.1.4 Data Length (BP 11 to 18)

This field shall specify as a 32-bit number the data length of the File Section.

Recognice the "File Section".

A File Section size is limited to a 32-bit number.

 

6.5.1 Relation to File Sections

Each file shall consist of one or more File Sections. Each File Section of a file shall be identified by a record in

the same directory.

A file may consist of several sections.

 

9.1.6 bit 7 marks a Multi-Extent. This concat several sections.

 

10 Levels of interchange:

Level 1 and Level 2: each file shall consist of only one File Section

At Level 3 no restrictions shall apply

 

 

Win95 does read Multi-Extent files. I don't know size limit, maybe 2GB.

 

A 8GB file is possible within ISO9660 specification.

Use several file sections below 4GB. The operaing system has to concat sections to one file.

 

NT4 does read a 8GB file. And explorer list a PB file.

NT up to Windows7 read files greater 4GB at ISO9660.

 

 

This is my favourite image burn application since DVD D... times. Thanks.

 

 

Greetings

Oskar

[LIGHTNING UK!]

Is this really required when you should just be using UDF anyway?

 

Do you have an example of an image using multiple extents or a program that already does it?

[Oskar]

Image a XP installation DVD with a big image.

XP setup dosn't support UDF, but ISO9660.

 

Mkisofs support files greater 4GB at ISO9669.

 

Greetings

Oskar

[LIGHTNING UK!]

XP comes on a CD... obviously I'm missing something.

[Cynthia]

The original XP without SP is around 572MB. With SP3 slipstreamed around 640 MB. Must be a lot of additional programs on that installation disc if it needs to be bigger than 4 GB? Perhaps Nero is included?

[Oskar]

Perhaps Nero is included?

Is this application such big?

I don't use software suggesting to burn the italian capital city.

 

Another example: a XP/2003 based WinPE, added a big hard disk image.

Boot WinPE DVD, restore the image to hard disk.

[mmalves]

We understand that it could be useful in certain situations, but adding that to ImgBurn would require quite a lot of work, not to mention that the most common "large capacity" media that anyone can afford and burn can only hold 7.96 GiB (8.5 GB) of data.

 

If you need a large file on a bootable disc you should be using vista or win7, as both of them can boot from UDF discs

[LIGHTNING UK!]

and I'd expect you to be able to select a split size for the hdd image... otherwise you'd run into the same problem if you saved it to a FAT32 drive etc.

[Oskar]

We understand that it could be useful in certain situations, but adding that to ImgBurn would require quite a lot of work

Thanks, I understand this explanation.

 

ImgBurn is my prefered image burn application still.

[LIGHTNING UK!]

I don't think it would be a lot of coding, hardly any in fact... it's just a case of finding out exactly how it has to be implemented.

 

I'll take a look when I'm in the mood.

[LIGHTNING UK!]

Support for multiple extent in the ISO9660 / Joliet file systems has now been added to both the file system parsing code (i.e. Read mode) and the file system creation code (i.e. Build mode).

 

This will be available (as an option) in 2.5.1.0