Open Firmware help

Discussion in 'PowerPC Macs' started by ReventonPro, Jul 11, 2016.

  1. ReventonPro macrumors newbie


    Jul 11, 2016
    I'm trying to boot Leopard off a USB drive on my Early 2004 iBook G4. Using the command:

    boot usb1/disk@1,\\tbxi

    I receive the following information:

    load-size=0 adler32=1

    LOAD-SIZE is too small

    So, I ask, what exactly does this mean? My machine is equipped with only 256 MB of RAM, do I need to upgrade to 1 GB? I'm using a 32 GB Thumb Drive so surely it isn't that. Using a DVD is not an option.

    How do you change the load-size to be something else? How the hell can I even boot Leopard? I've tried A LOT OF COMMANDS but this particular command is the only one that produced the load-size error. Everything else produces a "Can't open device or file" error.

    Any help you can offer is appreciated, I'm trying to get this iBook running asap!
  2. jbarley macrumors 68040


    Jul 1, 2006
    Vancouver Island
    Just a thought here, but is your USB thumb drive USB2.
    I realize USB3 is supposed to be backwards compatible but there is always "murphy's law".
  3. MacCubed macrumors 68000


    Apr 26, 2014

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