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Best linux distro for dual booting
(sopuli.xyz)
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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 would recommend Peropesis to you as a minimalsitc distro but the dual booting process will not be as easy as mint you also can try to use a distro with xfce desktop environment but I would say that 30 GB aren't much anymore and you should think about upgrading