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Questions tagged [pae]

Physical Address Extension (PAE) is a feature of 32-bit Intel (and compatible) CPUs that gives them a physical address space larger than 4 gigabytes.

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Can't boot Peppermint 32 bits in VirtualBox 6.1.40 - kernel does not have PAE

In a laptop of 64 bits with Windows 7 as host with VirtualBox 6.1.40 installed, was created a Virtual Machine for the latest Peppermint OS available at Choosing and Downloading a Disk Image. I got the ...
Manuel Jordan's user avatar
0 votes
3 answers
198 views

Why can't I install Linux Lite?

I am a newcomer to Linux, and I want to instal Linux Lite on an old Dell laptop. It has 2GB of Ram, and is 32-bit. I get a message that tells me I don't have the correct kernel on my CPU to instal, ...
J.Squern's user avatar
0 votes
1 answer
328 views

Have PAE still got 4GB

Trying to get more than 4GB RAM on 32 bit CPUs with PAE, but can't. ~# grep -o pae /proc/cpuinfo pae pae pae pae ~# uname -a Linux debian 4.9.0-6-686-pae #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02) ...
mikst's user avatar
  • 111
0 votes
1 answer
154 views

ASLR on i686-pae vs amd64 kernels running 32bit processes

Is ASLR more, same or less secure for a process running on an i686-pae kernel or for a 32bit process running on an amd64 kernel?
Bill Paxtonn's user avatar
0 votes
1 answer
894 views

32-bit PAE kernel vs. 32-bit Non-PAE kernel using a 64-bit processor. Any difference?

I am about to decide on a Linux distro with a choice of a 32-bit PAE kernel and a 32-bit Non-PAE kernel. I am/will be using a 64-bit processor. I can see that either the PAE or the Non-PAE version ...
Disco Makberto's user avatar
3 votes
2 answers
2k views

Physical Address Extension - how do virtual addresses work?

I'm running Debian Linux. uname -m says i686 which means 32-bit architecture machine with pae flag enabled. getconf LONG_BIT is 32. Installed RAM capacity is 6GB. My /proc/cpuinfo has an entry ...
Tamilselvan's user avatar
6 votes
2 answers
9k views

Maximum memory usable by a 32 bit RHEL 6 system

I have installed a 32 bit RHEL OS on a 64 bit system. From the wiki page of PAE: The Linux kernel includes full PAE mode support starting with version 2.3.23, with Linus Torvalds mentioning PAE'...
Ramesh's user avatar
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3 votes
1 answer
1k views

Can 32 bit applications on a 64 bit kernel use all the memory?

I know that the 32-Bit kernel can use PAE to allocate more RAM to applications with PAE (up to 64GB) as such I imagine if I am running 32 bit applications on a 32-bit kernel I can use all of my 24GB ...
Cestarian's user avatar
  • 2,071
1 vote
0 answers
1k views

How to disable PAE feature of kernel, after installation?

I am using RHEL 5.3(x86) as a base platform for my development purpose.My machine's spec is as follows: Intel, Core-i3 Processor @ 2.5GHz 4GB RAM Problem is whenever I am attempting to install the ...
manmatha.roy's user avatar
0 votes
1 answer
80 views

Is PAE harddrive dependent?

I have two M1400 and I can successfully boot and installed Bodhi Linux on one of them. When I try to boot it on the second one I get a Kernel Error saying that the CPU doesn't support PAE. The two PC'...
Mallow's user avatar
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1 answer
721 views

Does Linux Mint support PAE for 32-bit Cinnamon and MATE?

Does Linux Mint 32-bit support PAE for both Cinnamon and MATE desktop environments?
lambda23's user avatar
  • 103
3 votes
2 answers
7k views

How do I find out if my computer has PAE using Linux? [duplicate]

Possible Duplicate: What do the flags in /proc/cpuinfo mean? I tried installing CentOS 6.3 on my computer only to see a complaint that my computer doesn't have PAE. I am not sure if my computer ...
Eric's user avatar
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5 votes
2 answers
4k views

How much RAM can an application allocate on 64-bit x86 Linux systems?

Is it true that a single application can not allocate more than 2 GiBs even if the system has GiBs more free memory when using a 32-bit x86 PAE Linux kernel? Is this limit loosened by 64-bit x86 Linux ...
Ivan's user avatar
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2 votes
2 answers
461 views

Fedora 15 i686 report only 2.6 GB RAM

I have laptop Asus N53SV with 4 GB of RAM, i7 with integrated card and dedicated GPU. My problem on Fedora is that system reports only 2.6 GB RAM. I know that I should use kernel with PAE but even ...
sebastian's user avatar
3 votes
1 answer
212 views

Preemptive kernel and Physical Address Extension

Is there anyone that can tell me why, on a preemptive kernel, PAE would not work? This question is an exam question, however I haven't got a clue why it would not work.
Lucas Kauffman's user avatar
12 votes
2 answers
11k views

Why does my system show only 3.2 GiB of RAM when I definitely have 4.0 GiB

I have 2x2 GiB sticks of RAM installed. Running memtest86 from the grub boot menu confirms this.. memtest86 reports no errors. However every which way I check my available memory in a running ...
Peter.O's user avatar
  • 33k
6 votes
3 answers
13k views

What is the difference between 32-bit PAE and 64-bit kernels?

I ask this only in regards to memory addressing. I know that a PAE kernel allows the OS to access more memory than a standard 32-bit kernel, however, what are the other implications? What specific ...
Mr. Shickadance's user avatar
4 votes
1 answer
710 views

Is PAE worth it when I have 4GB RAM?

I have 4GB RAM installed on my machine, and I'm considering using all of it (IE, installing PAE-enabled kernel). I heard there's a performance penalty for this, so I wanted to know about other's ...
tshepang's user avatar
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