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  • #2316441

    bootstrap loader


    by dgrant1 ·

    what is bootstrap loader and how do i find it or
    test or anything to do with it i have some idea
    but not enough knowledge of the subject

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    • #3378821

      Reply To: bootstrap loader

      by dmiles ·

      In reply to bootstrap loader

      bootstrap loader

      (from “{bootstrap” or “to pull oneself up
      by one’s bootstraps”) A short program that was read in from
      cards or paper tape, or toggled in from the front
      panel switches, which read in a more complex program to
      which it gave control.

      On early computers the bootstrap loader was always very short
      (great efforts were expended on making it short in order to
      minimise the labour and chance of error involved in toggling
      it in), but was just smart enough to read in a slightly more
      complex program (usually from a card or paper tape
      reader), to which it handed control; this program in turn
      was smart enough to read the application or operating
      system from a magnetic tape drive or disk drive. Thus,
      in successive steps, the computer “pulled itself up by its
      bootstraps” to a useful operating state. Nowadays the
      bootstrap is usually found in ROM or EPROM, and reads the
      first stage in from a fixed location on the disk, called the
      “{boot block”. When this program gains control, it is
      powerful enough to load the actual OS and hand control over
      to it.

      See boot.

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