Floppy Disk Has No Boot Sector

Floppy Disk Has No Boot Sector

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Explanation: The BIOS POST process found a floppy disk to try and boot and operating system, however it couldn’t locate a boot sector from which to load an operating system.

Diagnosis: The most common cause of this problem is an attempt to boot a floppy disk before it has been formatted. This is not the same as booting a non-bootable floppy disk, as any formatted disk has a boot sector, even one that is not bootable. The non-bootable diskette is one that doesn’t have the operating system files on it.


  • Boot the system from a proper boot disk, or remove the floppy disk from the drive and boot from the hard disk.
  • If the problem persists despite the fact that the boot disk is known to be working, examine the floppy drive itself with a known working floppy disk.

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