The full initramfs (12.8 MB) does not fit init_boot (8 MB), and stock init_boot's /init overrides pmOS's in vendor_boot. Splitting produces a small base initramfs that fits, so it can be flashed to init_boot too. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QF5HebjUsRaxbW4cBX6HJP