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Thread: DVD ISO overshoots 4GB

  1. #1

    Default DVD ISO overshoots 4GB

    I noticed that the dvd iso (2017-10-10) is 4,30x,xxx,xxx guessing that they were probably aiming to stay under 2^32 or 4,294,967,296 otherwise why be so close to the 4GB size. So it doesn't fit on FAT32.

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    Default Re: DVD ISO overshoots 4GB

    The image will likely still burn to a standard DVD optical disk.

    Over the years, it's always been possible although you might have to use a different burning app than what is provided by default by the installed Desktop.

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    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by xorbe View Post
    I noticed that the dvd iso (2017-10-10) is 4,30x,xxx,xxx guessing that they were probably aiming to stay under 2^32 or 4,294,967,296 otherwise why be so close to the 4GB size. So it doesn't fit on FAT32.
    Hi
    Target is less that 4.7, it's not fat if you run fdisk over it... if they start going USB, I think they are worried about image size (was some ML discussion awhile back)...

    I have an image from last year...
    Code:
    4688183296 Jul 11  2016 openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160709-Media.iso
    
    sbin/fdisk -l openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160709-Media.iso
    
    Disk openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160709-Media.iso: 4.4 GiB, 4688183296 bytes, 9156608 sectors
    Units: sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disklabel type: dos
    Disk identifier: 0x74e7435b
    
    Device                                                     Boot Start     End Sectors  Size Id Type
    openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160709-Media.iso1       3888   11447    7560  3.7M ef EFI (FAT-12/16/32)
    openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160709-Media.iso2 *    11448 9156607 9145160  4.4G 17 Hidden HPFS/NTFS
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    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by xorbe View Post
    So it doesn't fit on FAT32.
    This maybe a dumb remark, just curious,, but why should it fit on a FAT32 file system?
    Henk van Velden

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    Default Re: DVD ISO overshoots 4GB

    If you want to use the "live-fat-stick" script, or something similar, so that you can boot several isos from a single usb flash drive, then you might want each iso to be small enough to fit the limitations of FAT32 file systems.
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    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by nrickert View Post
    If you want to use the "live-fat-stick" script, or something similar, so that you can boot several isos from a single usb flash drive, then you might want each iso to be small enough to fit the limitations of FAT32 file systems.
    Sounds to me like "if we would have a bottle of Coca Cola, we would have a rum-coals if we would have rum.

    Maybe the next one comes and complains it does not fit on a CD.

    My personal idea is that the developers are right to not take into account the limitations of such old devices / file systems (not even a Linux one). IIRC it is already for years that the size of a DVD is the restriction used. And that means they already have to decide what to make a selection of the packages that are in the on-line repos. I assume they will not make the ISO smaller. I even assume the ISO will grow further when in the future the use of DVDs for installation will be given over to other USB storage devices more and more.
    Henk van Velden

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    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by hcvv View Post
    My personal idea is that the developers are right to not take into account the limitations of such old devices / file systems (not even a Linux one).
    I agree with that.

    However, there are people out there who are used to putting several isos on a single fat stick. The ubuntu media seem to be small enough. And the person who came up with the "live-fat-stick" script now also has 'live-grub-stick" which supports other file systems (such as "ext2").
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  8. #8

    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by hcvv View Post
    This maybe a dumb remark, just curious,, but why should it fit on a FAT32 file system?
    Just an observation from the fact that the ISO is just slightly over 4GB versus hovering below dvd's 4.7GB size. I was just wondering the intention was in fact to stay under 4GB. (For myself, it means I had to zip the file to drop it onto my usb keychain drive.)

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    Default Re: DVD ISO overshoots 4GB

    On Tue 17 Oct 2017 08:56:01 PM CDT, xorbe wrote:

    hcvv;2841846 Wrote:
    > This maybe a dumb remark, just curious,, but why should it fit on a
    > FAT32 file system?


    Just an observation from the fact that the ISO is just slightly over 4GB
    versus hovering below dvd's 4.7GB size. I was just wondering the
    intention was in fact to stay under 4GB. (For myself, it means I had
    to zip the file to drop it onto my usb keychain drive.)


    Hi
    It was to fit the expanded image on a 4GB USB device, swings and
    roundabouts (most folks have => 8GB devices?).... You would need to
    browse the Factory ML to find the discussion.

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  10. #10

    Default Re: DVD ISO overshoots 4GB

    Quote Originally Posted by malcolmlewis View Post
    Hi
    It was to fit the expanded image on a 4GB USB device, swings and
    roundabouts (most folks have => 8GB devices?).... You would need to
    browse the Factory ML to find the discussion.
    How unfortunate that the USB device image is less than 4GB but greater than 4GB when packages up as ISO!

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