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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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[Question] Using DD to make a backup of an OS drive? (lemmy.ml)

submitted 5 months ago by brownmustardminion@lemmy.ml to c/linux@lemmy.ml

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Would this work or would I have problems:

Using dd command to backup an entire SSD containing dual boot Windows/Ubuntu partitions into an .iso file, with the intent to then dd that iso back onto the same size SSD in the case of a drive failure?

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[–] just_another_person@lemmy.world 10 points 5 months ago (1 children)

As long as it's not a mounted and running live system, it should work. Not the most efficient way to do such a thing, but I would think it should work.

[–] cmnybo@discuss.tchncs.de 4 points 5 months ago (2 children)

You can zero out the free space on each partition then pipe the output from dd into gzip if you want to save space.

[–] ryannathans@aussie.zone 10 points 5 months ago (1 children)

Might as well just use partclone at this point

[–] Para_lyzed@lemmy.world 6 points 5 months ago

Seconding partclone here, it's the easiest solution for imaging that only backs up the data on the partition that is used. Plus, it's in RescueZilla, which is pretty intuitive and user friendly for those that prefer GUIs

[–] rotopenguin@infosec.pub 1 points 5 months ago

Gzip runs at tens of MB/s. Zstd runs at least 10x faster, and then goes fasterer with multithreading (-T0).