Editing Physical Address Extension (section)

=== Others ===

[[FreeBSD]] and [[NetBSD]] also support PAE as a kernel build option. [[FreeBSD]] supports PAE in the 4.x series starting with 4.9, in the 5.x series starting with 5.1, and in all 6.x and later releases. Support requires the kernel <code>PAE</code> configuration-option. [[Loadable kernel module]]s can only be loaded into a kernel with PAE enabled if the modules were built with PAE enabled; the binary modules in FreeBSD distributions are not built with PAE enabled, and thus cannot be loaded into PAE kernels. Not all drivers support more than 4&nbsp;GB of physical memory; those drivers won't work correctly on a system with PAE.<ref>{{cite web | title = FreeBSD i386 5.5-RELEASE PAE(4) man page | date = 2003-04-08 | url = https://man.freebsd.org/cgi/man.cgi?query=pae&apropos=0&sektion=4&manpath=FreeBSD+5.5-RELEASE&arch=i386&format=html | access-date = 2023-07-11}}</ref>

[[OpenBSD]] has had support for PAE since 2006 with the standard GENERIC i386 kernel. GeNUA mbH supported the initial implementation.<ref>{{cite web | title = PAE for OpenBSD/i386 by Michael Shalayeff, NYC | date = 2006 | url = https://www.openbsd.org/papers/nyc2006/index.html | access-date = 2018-02-03}}</ref> Since release 5.0 PAE has had a series of changes, in particular changes to i386 MMU processing for PMAP, see pmap(9).<ref>{{man|9|pmap|OpenBSD}}</ref>{{failed verification|date=July 2023}}

[[Solaris (operating system)|Solaris]] supports PAE beginning with Solaris version 7. However, third-party drivers used with version 7 which do not specifically include PAE support may operate erratically or fail outright on a system with PAE.<ref>{{cite web | title=Added Support for Physical Address Extension (PAE) Mode | work=Solaris 7 5/99 Release Notes (Intel Platform Edition), Appendix B: Hardware Compatibility List and Device Configuration Guide (Intel Platform Edition) 5/99 | year=1999 | url=https://docs.oracle.com/cd/E19620-01/806-0225/app-hcl-21/index.html | access-date=2018-03-23 }}</ref>

[[Haiku (operating system)|Haiku]] added initial support for PAE sometime after the R1 Alpha 2 release. With the release of R1 Alpha 3 PAE is now officially supported.

[[ArcaOS]] has limited support for PAE for the purpose of creating RAM disks above the 4&nbsp;GB boundary.<ref>{{cite web | title=ArcaOS 5.0 from Arca Noae is the new release of OS/2 for the 21st Century | year=2017 | url=https://www.arcanoae.com/arcaos/ | access-date=2019-12-16 }}</ref>