System Administration Guide: Virtualization Using the Solaris Operating System
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How to Run 32–bit PAE Guest Domains

By default, physical address extensions (PAE) mode is used on 32-bit systems, aiding compatibility with other domain 0 implementations. Solaris can boot under either PAE or non-PAE, if the hypervisor version has bi-modal support.

How to Boot Solaris Control Domain in 32–bit Mode

To boot Solaris on xVM in 32-bit mode on a 64-bit capable system, the entry must be manually edited to remove all instances of $ISADIR:

  1. Become superuser, or assume the Primary Administrator role.
  2. Remove all instances of $ISADIR in the menu.lst file so that it looks like this:
    #---------- ADDED BY BOOTADM - DO NOT EDIT ----------
    title 32-bit Solaris xVM
    kernel /boot/xen.gz
    module /platform/i86xpv/kernel/unix /platform/i86xpv/kernel/unix [*]
    module /platform/i86pc/boot_archive
    #---------------------END BOOTADM--------------------
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