tinycore-build

The question

How little Linux can you boot?

Not a distro install, not a container image. A kernel and an initramfs assembled from upstream sources, where every file got there on purpose and the whole thing has to survive first boot.

The verdict

BOOTS. A TinyCore “Core” baseline for x86_64, built from source, reaches a working tc@box:~$ shell on the serial console under QEMU. No panics, no failed execs. Seven bugs stood between sources and shell. All seven were found by booting, fixed, and re-verified by booting again.

Three stories from the build:

The proof

The evidence: a shell prompt on serial console, a quiet boot log, and the caveats.

The build

The recipe: seven scripts from sources to core.gz, and seven bugs found by booting.

Lessons

Boot-test everything, audit upstream defaults, delete as you go, plus gaps and next steps.