this post was submitted on 07 Dec 2025
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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 agreeing with other people; there's probably a drive issue that the shop didn't catch.
On my machine, those two services that take 30 seconds for you do not take nearly that long for me.
dev-mapper-DebianVolume\x2dDebianMain.device(which is equivalent todev-mapper-data\x2droot.device; our drives are just called different things) only takes 1.074 seconds for me, whilelvm2-monitor.serviceonly takes 357 milliseconds.I've only ever seen Linux boots take this long when either a drive failed or I accidentally formatted a drive that's in my fstab, causing it to fail to mount and eventually landing me in a recovery shell. At that point, I'd either use the recovery shell or a USB to edit the fstab.
Next time you boot in, check to see if all your drives are showing up, check disk health, etcetera. Also, although this likely won't solve the problem, check that your drive connections are well-seated.