SUN: 32/64 bit kernel boots

Title:

SUN: 32/64 bit kernel boots

Author:

Douglas O’Leary <dkoleary@olearycomputers.com>

Description:

SUN: 32/64 bit kernel boots

Date created:

09/2001

Date updated:

10/2001

Disclaimer:

Standard: Use the information that follows at your own risk. If you screw up a system, don’t blame it on me…

Apparently there’s a couple of 32 bit drivers and some software that doesn’t work under the new 64 bit kernels. The software that I’ve heard of is some firewall apps; however, if there’s one, there’s probably more.

So, you have to boot 32 bit kernels by default. How do you do that?

To boot a 32 or 64 bit kernel only once do the following. This leaves the default as it was previously set so it only affects this boot:

• 32 bit:

  ok boot disk kernel/unix
  

• 64 bit:

  ok boot disk kernel/sparv9/unix
  

To set one or the other kernels as the default, update the boot-file parameter thusly:

• 32 bit:

  ok setenv boot-file kernel/unix
  

• 64 bit:

  ok setenv boot-file kernel/sparv9/unix
  

Then, boot as normal. From hither on, you’ll be booting whichever kernel you set as default.

To determine which kernel you’re booting, execute the isainfo command