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Dual Booting: How in god's name?!
(hexbear.net)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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FYI: Pop!_OS 22.04 uses systemd-boot, not GRUB.
I use rEFInd, which auto-detects my Windows boot partition. Though I had the Windows installation before the Linux one.
Systemd-boot should be able to detect a bootable Windows too. Those 3 boot options you saw once was systemd. Try to set that up as preferred boot manager in your BIOS/UEFI and you're set.