Hi,

it comes to me that while no single ISO can serve all firmwares, it would
be possible that one casper can serve the original ISO and an ISO without
MBR partition 2 alike.

The trick would be to let casper memorize the 16 bytes 462 to 477 before
it runs the partition editor, and to let it write the memorized bytes
back to offset 462 afterwards.
So if a user did to the ISO image file or to the ISO on stick:

  dd if=/dev/zero bs=1 count=16 of="$ISO_OR_STICK" conv=notrunc seek=462

then this would survive casper's adjustment of the partition table.

Have a nice day :)

Thomas

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https://bugs.launchpad.net/bugs/1922342

Title:
  HIrsute live session takes ages to boot on BIOS systems

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