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A walkthrough of how to replace a running Linux OS by piping a disk image directly to /dev/sda using curl or wget, without saving intermediate files. Starting from the classic Raspberry Pi flashing workflow, the author progressively simplifies the process down to a single curl redirect, then explores the challenge of overwriting a live, mounted disk. Attempts to write to the active disk cause a crash at 77.8% completion. The solution is booting into a rescue image first, which unmounts the target disk. The post teases a follow-up exploring how to do this entirely from RAM without a second disk, using early Linux boot tricks.