Cross-building a Customized Install

This step is optional. You can always install the OS from the official distribution, however doing a cross-build will allow you to more quickly build the kernel and optimize both kernel / userland as you'd like. I use this for my own reference when installing NetBSD/atari, so the instructions here are fairly pedantic.

Initial Setup

1. Get set up with a NetBSD install on a reasonably fast machine. I've found Hyper-V Server to work well. The instructions below reflect this choice.
2. Download the latest NetBSD AMD64 ISO locally, ex: ftp://ftp.netbsd.org/pub/NetBSD/iso/[current release version]/NetBSD-N.N.N-amd64.iso.
3. Create a VM with 512MB RAM and 50GB disk. Set the VM to boot from the downloaded ISO. On Hyper-V, the install will go a bit faster if you pre-create a fixed size 50GB virtual drive.
4. In the VM settings, remove the network adapter and add a Legacy Network Adapter configured to use the external network connection.
5. Allow the machine to boot with option 3 (no ACPI, no SMP).
6. Select language, keyboard type.
7. At the main menu select the option to install.
8. Choose a custom install and add everything except Games and X11. Add all the source sets including the X11 source set though.
9. Select "This is the correct geometry."
10. Select "Use the entire disk."
11. Choose to install the NetBSD boot code.
12. Choose "Set sizes of NetBSD partitions." (Maybe not necessary on NetBSD 7. I filed a NetBSD bug on the fact that swap space won't be configured if you select "Use existing partition sizes.")
13. The default partition sizes will be fine. Choose "Accept partition sizes."
14. Select "Partition sizes ok."
15. Select the default disk name.
16. Choose "Yes" to continue.
17. Choose "Use BIOS console."
18. Continue to select the default options and proceed with the install. On NetBSD 6 install via HTTP in order to get the source sets. (This is supposedly fixed in NetBSD 7, so it may be possible to install from media instead of HTTP there.)
19. Select the appropriate network options. For me, the defaults work fine. Setting the hostname here won't persist to the resulting NetBSD installation, so just leave it at the default.
20. Proceed with the install. The default download options are fine, unless you need to configure a proxy.
21. Choose to have the network settings installed to /etc.
22. You will see a menu to configure various options.
    1. Leave "Configure network" alone as it is already configured. Setting the hostname here won't persist to the resulting NetBSD installation.
    2. Choose the appropriate time zone (US/Pacific works for me).
    3. Leave the root shell at /bin/sh.
    4. Set the root password.
    5. "Enable installation of binary packages" and "Fetch and unpack pkgsrc for building from source" are not necessary.
    6. Enable sshd.
    7. Enable ntpd (if you have a non-proxied connection to the Internet).
    8. Run ntpdate at boot (if you have a non-proxied connection to the Internet).
    9. Select "Finished configuring"
23. Choose the option to halt the system from the utility menu. Power down the VM once it's halted.
24. In the VM settings, switch the boot order to boot IDE before the CD and disable the media in the virtual CD/DVD drive.
25. Power on the VM and quickly press '4' at the boot menu to disable ACPI and SMP. Otherwise you may experience networking/console related issues on boot.
26. Allow the system to boot, then log on as root.
27. Disable ACPI and SMP by default.
    1. vi /boot.cfg
    2. Set the 'default' option to 4.
    3. Save the file and exit vi.
28. Add a new user for yourself: useradd -m -G wheel [username]
29. passwd [username]
30. Set your hostname.
    1. vi /etc/rc.conf
    2. Add:
       1. hostname=vmname.foo.com (Where vmname.foo.com is a fully qualified hostname for the VM.)
    3. Save the file and exit vi.
31. Reboot: shutdown -r now

Get Ready to Build

1. When the system comes back, log on remotely via ssh using the username you created.
2. su to root
3. chown -R [username] /usr/src
   1. Where [username] is the username created earlier.
4. chown -R [username] /usr/xsrc
5. mkdir /usr/obj
6. chown [username] /usr/obj
7. vi /etc/mk.conf
8. Add the following:
   .if ${MACHINE} == "atari"
   CPUFLAGS+= -m68030 -m68881
   CFLAGS+= -Os
   .endif
9. Save and exit vi.
10. vi /etc/inetd.conf
11. Uncomment the ftp daemon. This will enable you to ftp install the release and kernel that will be built.
12. /etc/rc.d/inetd restart
13. Exit out of root.

Build

1. cd /usr/src/sys/arch/atari/conf
2. cp ATARITT ATARIKERN
3. Edit std.atari and ATARIKERN as described in Kernel steps 10 - 12.
4. cd /usr/src
5. ./build.sh -m atari tools
6. ./build.sh -u -m atari kernel=ATARIKERN
7. vi /usr/src/etc/etc.atari/Makefile.inc
8. Remove FALCON, HADES, MILAN-ISAIDE, and MILAN-PCIIDE.
9. Save and exit vi.
10. ./build.sh -U -u -x -m atari release

Install

Now you can ftp install the release from /usr/src/releasedir/atari per the instructions in Basic walkthrough. After that you can ftp the custom kernel you built from /usr/src/sys/arch/atari/compile/obj/ATARIKERN/netbsd.