General discussion

FDISK/MBR destructive?

Win98SE, is it possible to replace the HDD MBR without the replacement being destructive?

My Win98Se system sometimes displays "Invalid Boot Diskette" "Insert Boot Diskette in A:"

There is no removeable in the PC and a new boot works okay.

What gives?

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Reply to: FDISK/MBR destructive?
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Most of the time just fine.

BUT there are those machines that use some "drive overlay" software and such will vanish with a FDISK /MBR

But 99.99% of the time, it's just fine and nothing of the sort happens. Why is this an issue? All of us have learned our lesson about backup.


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invalid boot diskette means that the PC is set in "setup" to search for a floppy (removeable) drive and boot 1st from it, and it thinks it sees a non-bootable floppy in the drive (or tape drive).
It's a different message for non-bootable hard drive and then asks for bootable floppy or other.
"new boot works ok"...what???

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Invalid Boot Diskette

The succesive boot after receiving the "Invalid Boot Diskette" allows the PC to boot from the HDD.
This boot is initiated by me with the reset button.

You are correct no doubt that a setup condition exists, but how & why?


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(NT) (NT) And what's your current problem, if any?
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Invalid Boot Diskette

From my point of view needing to reboot after receiving "Invalid Boot Diskette" is a problem.

Again I agree that the PC "thinks" it has a non-bootable diskette in A:, but the A: drive (and all other removables)are empty, so where is my problem?


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"setup", BIOS has 2 applicable options...

1. to disable floppy A and B, no floppy installed.
2. Boot order for CDrom, then Hdd, or Hdd 1st, no flop.

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