Correct the avatar and capacity claims, and document the three format modes The power-on explanation for avatars was wrong: the updater rescans when a device appears, shown by the update menu coming up on USB insertion from inside the dashboard. The actual cause is the disk key slot 0x1001, which is write-once per boot - replaying a valid sector returns 0xC8000002 even on the drive that had just authenticated with it. The capacity-versus-avatars trade-off is also gone for a flashed drive: LT+RT+LB keeps the signature and marks the content partition, and system content lives in SystemExtPartition, which the resize never touches. Verified at 218 GiB with avatars working. On-Console Format now documents all three modes rather than LT alone, and the partition list matches what the code writes.
Document unauthenticated disk support