Download
Choose the suitable image/ISO from OpenBSD, for macOS and VMware Fusion, I used install78.iso and arm64.
Installing
Using VMware Fusion:
Once the kernel is booted, the installer asks the first question.
...
root on rd0a swap on rd0b dump on rd0b
erase ^?, werase ^W, kill ^U, intr ^C, status ^T
Welcome to the OpenBSD/amd64 7.X installation program.
(I)nstall, (U)pgrade, (A)utoinstall or (S)hell?
Select (I)nstall and answer the questions.
System and Networking
Choose your keyboard layout ('?' or 'L' for list) **default
System hostname? (short form, e.g. ‘foo’) OpenBSD
Available network interfaces are: em0 vlan0. Which network interface do you wish to configure? (or 'done') em0
IPv4 address for em0? (or 'autoconf' or 'none') autoconf
IPv6 address for em0? (or 'autoconf' or 'none') none
Which network interface do you wish to configure? (or 'done') done
Using DNS domainname my.domain
Using DNS nameservers at 192.168.122.1
Users and Logins
Password for root account? (will not echo) = *******************
Password for root account? (again) = *******************
Start sshd(8) by default? = yes
Setup a user? (enter a lower-case loginname, or 'no') = username
Full name for user *username*? = Username
Password for user *username*? (will not echo) = *******************
Password for user *username*? (again) *******************
WARNING: root is targeted by password guessing attacks, pubkeys are safer. Allow root ssh login? (yes, no, prohibit-password) = no
What timezone are you in? ('?' for list) = UTC
Disk Setup
Available disks are: sd0. Which disk is the root disk? ('?' for details) = sd0
Use (A)uto layout, (E)dit auto layout, or create (C)ustom layout? = auto
File Sets
OpenBSD is broken up into multiple parts called sets. Depending on the intended purpose of the machine, as well as the available space, you can either install all sets or only the required ones. Installing all sets is recommended for new users.
Location of sets? (cd0 disk http nfs or 'done') = cd0
Is the disk partition already mounted? = no
Pathname to the sets? 7.8/arm64
Select sets by entering a set name, a filename pattern or ‘all’. De-select sets by prepending a ‘-’, e.g.: ‘-game*’. Selected sets are labeled ‘[X]’.
[X] bsd [X] comp6X.tgz [X] xbase6X.tgz [X] xserv6X.tgz
[X] bsd.rd [X] man6X.tgz [X] xshare6X.tgz
[X] base6X.tgz [X] game6X.tgz [X] xfont6X.tgz
Set name(s)? (or ‘abort’ or ‘done’) = done
Directory does not contain SHA256.sig. Continue without verification? = yes
CONGRATULATIONS! Your OpenBSD install has been successfully completed!
Exit to (S)hell, (H)alt or (R)eboot? = reboot