# list disks
> sysctl hw.disknames

# add floating ip in Hetzner Cloud
> vi /etc/hostname.vio0
inet alias <IP_Address> xfffffff
inet6 autoconf

> echo 'permit <username>' > /etc/doas.conf
> echo 'permit nopass keepenv root as root' >> /etc/doas.conf

# boot in secure mode
> boot -s
# mount system
> mount -uw /
# mount specific partitions if seperatly mounted
> mount /usr
# set new passwd eg.
> passwd
# reboot system
> reboot

> disklabel -E sd0
...
sd0> p g
OpenBSD area: 64-104856255; size: 50.0G; free: 0.0G
#                size           offset  fstype [fsize bsize   cpg]
  a:            10.0G               64  4.2BSD   2048 16384 12960 # /
  b:             2.0G         20971296    swap                    # none
  c:            50.0G                0  unused
  d:             3.0G         41961760  4.2BSD   2048 16384 12960 # /tmp
  e:             5.0G         25173856  4.2BSD   2048 16384 12960 # /usr
  f:             3.0G         35664288  4.2BSD   2048 16384 12960 # /home
  g:            27.0G         41961760  4.2BSD   2048 16384 12960 # /var