pxelinux - boot image size for ms-dos boot

Discussion in 'Linux Networking' started by Rudi Langhanki, Mar 22, 2005.

  1. I am using pxelinux on a linux server to allow some diskless clients
    to boot an MS-DOS boot image from LAN.

    This works fine for 1.44MB images.

    I also succeeded today in creating a 2.88MB (floppy image) with help
    dd (grab the 1.44MB bootsector)
    mtools (mformat a 2.88MB image file including the above bootsector)
    copying io.sys, msdos.sys, command.com to the just created and mounted

    But I need an even larger DOS-Partition via boot from LAN.
    With my knowledges I reached the limit of 2.88MB by using mformat:
    where x: is defined in ~/.mtoolsrc as the resulting image file.

    I tried to increase the values in the mformat command, but the
    resulting image was no longer bootable.

    I tried to use an MBR of an existing HDD and the 8MB DOS-partition,
    not bootable.

    What am I doing wrong?
    Any help possible?
    At least, do I have the chance to go up to a 3.84MB floppy image? For
    this I did not find any cylinder, sector, head numbers on the web. Do
    you know the correct settings for such a floppy?

    Thanks for any help.
    Rudi Langhanki, Mar 22, 2005
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