I found a document that referenced an archived forum thread; the forum thread's last visible entry is from 2006. hard to believe this is still relevant. Page: https://openwrt.org/docs/guide-user/installation/generic.uninstall Link text "TIP: PLEASE READ - Common mistakes" links to archived thread: https://forum.archive.openwrt.org/viewtopic.php?id=3474
This thread was archived on 24 Apr 2018