Hi!
Here's a small story: my boyfriend temporary has a laptop and he's not
allowed to prune Windows 8.1 from it, so he has to setup dualboot. Also
he wants OpenBSD part of the disk to be encrypted. And one more thing:
this laptop doesn't support EFI at all, otherwise dualboot would be
easy. He did everything according to FAQ both full disk encryption and
multibooting, but that didn't work, installboot refused to install at
/dev/sda4 with error "no OpenBSD partition found", he quickly fixed that
issue, but then when he gave PBR, OpenBSD refused to boot, then he tried
to give PBR of softraid0 and that lead to a new error after reboot:
"No active partition", that can't be helped, so he wiped everything out,
now thanks to your FAQ he has to reinstall Windows 8.1 which is tedious
with his slow ISP.
Conclusion: OpenBSD is not designed to be multibooted, so this section
of FAQ is obsolete.
Index: index.html
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diff -u -p -r1.538 index.html
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+++ index.html 6 Apr 2019 16:36:14 -0000
@@ -76,7 +76,6 @@ that are not covered in the FAQ.
<li><a href="faq4.html#Partitioning">Disk Partitioning</a>
<li><a href="faq4.html#SendDmesg" >Sending Your dmesg After the Install</a>
<li><a href="faq4.html#site" >Customizing the Install Process</a>
-<li><a href="faq4.html#Multibooting">Multibooting</a>
</ul>
<h3><a href="faq10.html">System Management</a></h3>
Index: faq4.html
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RCS file: /cvs/www/faq/faq4.html,v
retrieving revision 1.527
diff -u -p -r1.527 faq4.html
--- faq4.html 26 Feb 2019 23:53:55 -0000 1.527
+++ faq4.html 6 Apr 2019 16:36:14 -0000
@@ -36,7 +36,6 @@ FAQ - Installation Guide
<li><a href="#Partitioning">Disk Partitioning</a>
<li><a href="#SendDmesg" >Sending Your dmesg After the Install</a>
<li><a href="#site" >Customizing the Install Process</a>
- <li><a href="#Multibooting">Multibooting</a>
</ul>
<hr>
@@ -517,96 +516,3 @@ Example usage:
write to this file).
At boot time, <code>rc.firsttime</code> is executed once then deleted.
</ul>
-
-<h2 id="Multibooting">Multibooting</h2>
-
-Multibooting is having several operating systems on one computer, with some
-means of selecting which OS is to boot.
-You may want to familiarize yourself with the
-<a href="faq14.html#BootAmd64">OpenBSD boot process</a> before you start.
-A brief introduction to <a href="https://man.openbsd.org/fdisk";>fdisk(8)</a>
-is in the section on <a href="faq14.html#fdisk">using OpenBSD's fdisk</a>.
-
-<p>
-If you are adding OpenBSD to an existing system, you will probably need to
-create some free space before installing OpenBSD.
-In addition to your existing system's native tools,
-<a href="http://gparted.org/";>gparted</a>
-may be useful for deleting or resizing existing partitions.
-Preferably use one of the four primary MBR partitions for booting OpenBSD.
-Extended partitions may not work.
-
-<h3>Boot Loaders</h3>
-
-On Macs, <a href="http://www.rodsbooks.com/refind/";>rEFInd</a> should work out
-of the box.
-
-<p>
-You can set up dual booting with
-<a href="https://www.gnu.org/software/grub/";>GRUB 2</a> as follows.
-Assuming OpenBSD is installed on the fourth MBR partition (fdisk partition 3)
of
-the first hard disk <code>hd0</code>, append the following to
-<code>/etc/grub.d/40_custom</code>.
-
-<pre class="cmdbox">
-menuentry "OpenBSD" {
- set root=(hd0,4)
- chainloader +1
-}
-</pre>
-
-Then regenerate the GRUB 2 configuration file,
<code>/boot/grub/grub.cfg</code>.
-On Debian-based distros, you should run <code>update-grub</code>.
-Otherwise, do
-
-<pre class="cmdbox">
-# <b>grub-mkconfig -o /boot/grub/grub.cfg</b>
-</pre>
-
-See the
-<a
href="https://www.gnu.org/software/grub/manual/grub.html#Invoking-grub_002dmkconfig";>
-GRUB 2 manual</a> or
-<a href="https://manpages.debian.org/jessie/grub2-common/update-grub2.8";>
-update-grub2(8)</a>
-for more information.
-
-<h3>Windows</h3>
-
-The Boot Configuration Data (BCD) store allows multiple versions of Windows
-to be booted through <code>bcdedit</code>.
-A good introduction can be found in
-<a href="https://technet.microsoft.com/en-us/library/cc721886%28WS.10%29.aspx";>
-this article</a>.
-If you want a GUI alternative, you may want to try
-<a href="https://neosmart.net/EasyBCD/";>EasyBCD</a>.
-
-<p>
-You will need a copy of your OpenBSD install's
-<a href="faq14.html#BootAmd64">Partition Boot Record (PBR)</a>.
-You can copy it to a file using a process similar to:
-<pre class="cmdbox">
-# <b>dd if=/dev/rsd0a of=openbsd.pbr bs=512 count=1</b>
-</pre>
-where <code>sd0a</code> is your boot device, and you will need to get the
-file <code>openbsd.pbr</code> to your Windows system partition.
-
-<p>
-Once OpenBSD's PBR is copied to the Windows system partition, you need a shell
-with administrative privileges to run the following commands:
-
-<pre class="cmdbox">
-C:\Windows\system32> <b>bcdedit /create /d "OpenBSD/i386" /application
bootsector</b>
-The entry {0154a872-3d41-11de-bd67-a7060316bbb1} was successfully created.
-C:\Windows\system32> <b>bcdedit /set {0154a872-3d41-11de-bd67-a7060316bbb1}
device boot</b>
-The operation completed successfully.
-C:\Windows\system32> <b>bcdedit /set {0154a872-3d41-11de-bd67-a7060316bbb1}
path \openbsd.pbr</b>
-The operation completed successfully.
-C:\Windows\system32> <b>bcdedit /set {0154a872-3d41-11de-bd67-a7060316bbb1}
device partition=c:</b>
-The operation completed successfully.
-C:\Windows\system32> <b>bcdedit /displayorder
{0154a872-3d41-11de-bd67-7060316bbb1} /addlast</b>
-The operation completed successfully.
-</pre>
-
-Note that OpenBSD expects the computer's real-time clock to be set to
-Coordinated Universal Time (UTC).
-See <a href="faq8.html#TimeZone">this section</a> for more info.
