PhilsComputerLab | How to Boot from USB when computer doesn't have USB Boot option: PLOP Boot Manager @philscomputerlab | Uploaded January 2022 | Updated October 2024, 5 days ago.
With the PLOP Boot Mananger, you can boot from CD-ROM drive on a 386 or 486 and boot from USB flash drive on old computers that have a USB port, but do not support USB booting.

Resources:
https://www.plop.at/en/bootmanager/download.html

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