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this post was submitted on 20 Sep 2023
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From Wikipedia, the free encyclopedia
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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failed to mount root filesystem on unknown-block(0,0)means the kernel started, loaded builtin drivers and drivers from the initrd, looked for the system partition to continue starting up and couldn't find it.Maybe you removed a disk and
/dev/sdbbecame/dev/sdaor maybe you forgot to add nvme SSD support and the kernel can't read/dev/nvme0n1p1.Or your disk let out the magic smoke and isn't detected any more.