Hi all, afterboot(8) mentions /altroot, which is a nice feature.
But you only learn about /altroot when you read afterboot(8). By that time, you already have a system installed, in particular your disk is already partitioned, and typically you don't have the spare partition (of size at least that of /) to use for /altroot. So my suggestion is: /altroot should be mentioned in the install faq, probably in the 'setting up disks' paragraph: http://openbsd.org/faq/faq4.html#Disks Thanks Jan
