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this post was submitted on 12 Aug 2023
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Linux
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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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Boot from a USB drive, then use DD to copy the entire disk over and resize the partitions if necessary.
What if I want to clone an installation from a 2 TB drive (that is less than half full) to a 1 TB drive? Would I have to resize then
dd?Yes.
dd+ partition resize is a bit overkill. You can usecp -axto copy at file level instead of disk level. Or, if you really want to clone the partition, usingcatis faster thandd.ddcan be fast if you experiment with and pick the right block size, but ofc doing that would take extra time.You have to create and configure partitions and file systems if you do it at the file level. It also may not work if you're using disk encryption. There's a greater chance of having functional differences due to permissions, ownership, linking, etc doing things at the file level - though it SHOULD be fine but why bother if block device level is viable.
Did not know cat could be used that way.