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this post was submitted on 22 Aug 2024
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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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I'm not sure, but clearly something happens on the background, as my Debian drive broke after I changed it back and forth for the Windows drive. Grub fell back to rescue mode. After following some instructions and trying to boot from grub command line, Debian wouldn't boot after it recognized the mouse. That's what I know. Even in different drives, something happens on the PC when you go back and forth with Windows and Linux.
Here's how to delete the SBAT policy that the Windows Update applies.
I should have been more clear,
Assuming dev/sda is Linux and dev/sdb is Windows, I have grub on sda and Windows bootloader on sdb. I use a hotkey at boot to tell the bios which drive to boot from.
Theoretically windows thinks it's the only OS unless it's scoping out that second hard disk.
It updates Secure Boot in the BIOS, so you could completely remove Windows but the Secure Boot update would still be in the BIOS and affect the boot loader.