Page 1 of 8 123 ... LastLast
Results 1 to 10 of 72

Thread: New project but iso is too big

  1. #1
    Junior Member registered user
    Join Date
    Aug 2003
    Posts
    17

    New project but iso is too big

    I have make a post in the remstring area but I haven't a reply....

    --------------------------------------------------------------------------------------------------------------------------
    I remastering a dvd version. The knoppix image file is 2,8 GB and the cd versions start without problem but when I add a directory with the file and I remastering my version I receive the error "Can't find a KNOPPIX Filesystem" when I start my new dvd. Somebody can't help me about this error?
    I used all option in boot string but isn't a solutio
    --------------------------------------------------------------------------------------------------------------------------

    Pleas help me....

  2. #2
    Administrator Site Admin-
    Join Date
    Apr 2003
    Location
    USA
    Posts
    5,441
    ISO 9660 standards limit any individual file on a DVD to 2 megs in size.

  3. #3
    Junior Member registered user
    Join Date
    Aug 2003
    Posts
    17
    Can I resolve the problem? I have a 2.6 ISO size

  4. #4
    Administrator Site Admin-
    Join Date
    Apr 2003
    Location
    USA
    Posts
    5,441
    Quote Originally Posted by rabinhood
    Can I resolve the problem? I have a 2.6 ISO size
    The ISO size is not the issue. I stated any individual file within the iso was limited to 2 gigs, not the iso itself. One way to resolve it seems almost too obvious. There have been some other work arounds discussed in these forums; I've never done any myself.

  5. #5
    Junior Member registered user
    Join Date
    Aug 2003
    Posts
    17
    Sorry I don't speak english very well and I can't search the right topic. Can you link me please.

  6. #6
    Senior Member registered user
    Join Date
    Jul 2004
    Location
    Ca
    Posts
    305
    Robinhood;

    I would suggest that you install .cmg files which reduce the size by 50% and utilize cramfs files . These files are "on-the-fly" decoded when you run them.

    Many of these files are available through the Klik system and would certainly provide a reduction in your DVD load.

    This could best be implemented by eliminating enough of the DVD program to allow it to be burned. Then add the .cmg files after the burn to DVD such that they are available with a single click on the desktop.

    I haven't tried the install of .cmg files within a DVD burn although I have no reason to believe it won't work.

    Essentially, the use of cramfs to initiate .cmg files provides a second compression within the Knoppix LiveDVD...the cloop and .cmg compressions.

    Best to you

  7. #7
    Senior Member registered user
    Join Date
    Feb 2003
    Location
    Germany
    Posts
    1,159
    lilsirecho, I'm doing what you describe w/o problems. Nice to have a DVD consisting of core Knoppix/Kanotix plus 4 GB of additional software

    Greetings,
    probono

  8. #8
    Senior Member registered user
    Join Date
    Jul 2004
    Location
    Ca
    Posts
    305
    Probono has underlined the DVD possibilities by stating he has increased the DVD software by 4GB using .cmg files..

    The original size of the DVD without the added .cmg files is ~2GB which constitutes about 5GB of software "on-the-fly" decoded.

    The result is ~9GB of DVD software on the DVD disc "on-the-fly".

    The additional .cmg files are 50% compressed and when added to the ~2GB of cloop compressed software on the original DVD produces a fully loaded DVD disc ~4+GB...instead of having ~half of the disc not utilized

    It would seem a good solution to the problem you presented.

  9. #9
    Banned
    Join Date
    Feb 2005
    Posts
    14
    If you use Linux 2.6 with driver mapper support you can go around 2Gb limit a little bit differently - split your uncompressed image into chunks (on a block boundary) which would compressed into under 2Gb sized images, use separate cloop devices for each of them and then use 'linear' target to put them all together. Try something like this (assuming 65536 block size and 16Gb uncompressed image):

    split -b 4294967296 KNOPPIX-UNCOMPRESSED.iso KNOPPIX.iso.
    create_compressed_fs KNOPPIX.iso.aa 65536 > KNOPPIX0-gz.iso
    create_compressed_fs KNOPPIX.iso.ab 65536 > KNOPPIX1-gz.iso
    create_compressed_fs KNOPPIX.iso.ac 65536 > KNOPPIX2-gz.iso
    create_compressed_fs KNOPPIX.iso.ad 65536 > KNOPPIX3-gz.iso

    modprobe cloop
    losetup /dev/loop0 KNOPPIX0-gz.iso
    losetup /dev/loop1 KNOPPIX1-gz.iso
    losetup /dev/loop2 KNOPPIX2-gz.iso
    losetup /dev/loop3.KNOPPIX3-gz.iso

    dmsetup create knoppix <<EOF
    0 8388608 linear /dev/loop0 0
    8388608 8388608 linear /dev/loop1 0
    16777216 8388608 linear /dev/loop2 0
    25165824 8388608 linear /dev/loop3 0

    mount -r -t iso9660 /dev/mapper/knoppix /KNOPPIX

    So, here - you'll have your under 2Gb file sizes on iso9660 and a nice 16Gb uncompressed file system.
    The only problems are that Linux 2.4 does not have device mapper and you need to adjust your mounting schema for /KNOPPIX during boot.

    Hope it helps,
    Cheers,
    Igor

    P.S. It may not work with the current create_compressed_fs due to a small bug - it adds an extra block if uncompressed image size is evenly divided by the block size. It doesn't show up when you have just one image, but with many it will show up in the middle of your file system.
    If you have python installed you can use "my cloop python utilities" ftp://belyi.ac93.org/pub/cloop-pyutils.tar.gz as a workaround. Otherwise, you should apply a tiny patch provided with a debian bug report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=296179

  10. #10
    Senior Member registered user
    Join Date
    Jul 2004
    Location
    Ca
    Posts
    305
    belyi;

    Appreciate your discussion of alternate methods to create DVD media with large uncompressed files (quote 16GB).

    I would assume that such uncompressed files of this size would be slower in execution than compressed files (.cmg 50% or zisofs 50% compression).

    This conclusion is based on the search time required to find the application.

    The use of .cmg files installed after the burn provides the option of deleting and adding files to utilize new applications.

    This suggests a combination of burned .cmg files and post-burn .cmg files as being more versatile as well as faster in execution.

    Very nice to hear of your application of another method.

Page 1 of 8 123 ... LastLast

Similar Threads

  1. New Project?
    By foamrotreturns in forum The Lounge
    Replies: 0
    Last Post: 12-08-2005, 05:11 AM
  2. Project Looking Glass?
    By IsaacKuo in forum The Lounge
    Replies: 2
    Last Post: 07-11-2004, 04:51 PM
  3. Vote on the Knoppix DVD project...
    By Dave_Bechtel in forum Knoppix DVD
    Replies: 23
    Last Post: 05-16-2004, 12:04 AM
  4. Need assistance with a project
    By Rachel Sykes in forum Customising & Remastering
    Replies: 4
    Last Post: 02-16-2004, 02:11 PM
  5. Knoppix project help....
    By ceejay187 in forum The Lounge
    Replies: 0
    Last Post: 02-10-2004, 09:14 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Intel Core i7-7800x CPU processor sr3nh 3.50ghz 6-Core 8.25mb lga-2066 X series picture

Intel Core i7-7800x CPU processor sr3nh 3.50ghz 6-Core 8.25mb lga-2066 X series

$36.41



Intel - Core i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unloc... picture

Intel - Core i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unloc...

$331.99



Intel - Core i7-12700K Desktop Processor 12 (8P+4E) Cores up to 5.0 GHz Unloc... picture

Intel - Core i7-12700K Desktop Processor 12 (8P+4E) Cores up to 5.0 GHz Unloc...

$236.99



Intel 6 Core i5-8600 3.1GHZ Desktop Processor SR3X0 picture

Intel 6 Core i5-8600 3.1GHZ Desktop Processor SR3X0

$50.00



Intel - Core i9-14900K 14th Gen 24-Core 32-Thread - 4.4GHz (6.0GHz Turbo) Soc... picture

Intel - Core i9-14900K 14th Gen 24-Core 32-Thread - 4.4GHz (6.0GHz Turbo) Soc...

$539.99



Intel Core i5-6500 Quad-Core Processor 3.2 GHz 6MB LGA1151 picture

Intel Core i5-6500 Quad-Core Processor 3.2 GHz 6MB LGA1151

$23.99



Intel - Core i7-14700K 14th Gen 20-Core 28-Thread - 4.3GHz (5.6GHz Turbo) Soc... picture

Intel - Core i7-14700K 14th Gen 20-Core 28-Thread - 4.3GHz (5.6GHz Turbo) Soc...

$399.99



Intel - Core i9-13900K 13th Gen 24 cores 8 P-cores + 16 E-cores 36M Cache, 3 ... picture

Intel - Core i9-13900K 13th Gen 24 cores 8 P-cores + 16 E-cores 36M Cache, 3 ...

$519.99



Intel Core i3-12100F Processor (4.3 GHz, 4 Cores, LGA 1700) Box - BX8071512100F picture

Intel Core i3-12100F Processor (4.3 GHz, 4 Cores, LGA 1700) Box - BX8071512100F

$83.50



AMD EPYC 7282 cpu processor 16 cores 32 threads 2.8GHZ up to 3.2GHZ 120w picture

AMD EPYC 7282 cpu processor 16 cores 32 threads 2.8GHZ up to 3.2GHZ 120w

$78.00