Freebsd Pae Support

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Chapter 4. Hardware Compatibility - FreeBSD

    https://www.freebsd.org/doc/en/books/faq/hardware.html
    FreeBSD as an operating system generally supports as much physical memory (RAM) as the platform it is running on does.

The Configuration File - FreeBSD

    https://docs.freebsd.org/doc/7.0-RELEASE/usr/share/doc/handbook/kernelconfig-config.html
    The Physical Address Extension (PAE) capability of the Intel ® Pentium Pro and later CPUs allows memory configurations of up to 64 gigabytes. FreeBSD provides support for this capability via the PAE kernel configuration option, available in all current release versions of FreeBSD. Due to the limitations of the Intel memory architecture, no ...

2.2. Minimum Hardware Requirements - FreeBSD

    https://www.freebsd.org/doc/handbook/bsdinstall-hardware.html
    FreeBSD will take advantage of Physical Address Extensions (PAE) support on CPU s with this feature. A kernel with the PAE feature enabled will detect memory above 4 GB and allow it to be used by the system. However, using PAE places constraints on device drivers and other features of FreeBSD.

Large Memory Configuration (PAE) Kernel for FreeBSD 9.2 ...

    https://forums.freebsd.org/threads/large-memory-configuration-pae-kernel-for-freebsd-9-2-i386-x86.43177/
    Oct 16, 2014 · The FreeBSD kernel supports PAE as a build option. After compiling a PAE enabled kernel, the 4 GB limit will increase to 64 GB. Recompiling the kernel is best to be done right after the OS has been installed. Nonetheless, a backup of the old kernel doesn't hurt.

Open Source OS Still supporting 32-bit Architecture and ...

    https://itsfoss.com/32-bit-os-list/
    Aug 07, 2019 · OpenBSD support for i386 is mostly on par with FreeBSD support. In fact, some OpenBSD drivers are adapted from FreeBSD (and NetBSD). Others were written specifically for OpenBSD. So if you run somewhat exotic devices, I encourage you to try the three “big” BSD flavors to determine which one has the best support for your hardware.

FreeBSD 12.0-RELEASE Hardware Notes

    https://www.freebsd.org/releases/12.0R/hardware.html
    FreeBSD will take advantage of Physical Address Extensions (PAE) support on CPUs that support this feature. A kernel with the PAE feature enabled will detect memory above 4 gigabytes and allow it to be used by the system.

FreeBSD 11.0-RELEASE Release Notes

    https://www.freebsd.org/releases/11.0R/relnotes.html
    The release notes for FreeBSD 11.0-RELEASE contain a summary of the changes made to the FreeBSD base system on the 11.0-STABLE development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the FreeBSD kernel and userland. Some brief remarks on upgrading are also presented.

FreeBSD 11.1-RELEASE Hardware Notes

    https://www.freebsd.org/releases/11.1R/hardware.html
    FreeBSD will take advantage of Physical Address Extensions (PAE) support on CPUs that support this feature. A kernel with the PAE feature enabled will detect memory above 4 gigabytes and allow it to be used by the system.

The Configuration File - FreeBSD

    https://docs.freebsd.org/doc/6.1-RELEASE/usr/share/doc/handbook/kernelconfig-config.html
    FreeBSD provides support for this capability via the PAE kernel configuration option, available in the 4.X series of FreeBSD beginning with 4.9-RELEASE and in the 5.X series of FreeBSD beginning with 5.1-RELEASE. Due to the limitations of the Intel memory architecture, no distinction is made for memory above or below 4 gigabytes.

Physical Address Extension - Wikipedia

    https://en.wikipedia.org/wiki/Physical_Address_Extension
    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 PAE configuration-option.



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