Upgrade kernel to pae

[Tyro65]

I want to use 4GB of RAM.  How do I upgrade from kernel-2.6.33.7-pclos6.bfs to kernel-2.6.33.7-pclos6.pae

Thanks.

[rubentje1991]

Open Synaptic
Reload >> Mark All Upgrades >> Apply >> Apply

Then do a search for "kernel",
and install a kernel with the .pae extension (or even the .pae.bfs extension)....

Press Apply >> Apply
Then reboot the pc, select the new entry in your GRUB and boot up
Remember!
First boot with a new kernel takes some time (a few minutes)... You can press <Esc> during boot up to see what the computer is doing, but don't interrupt it!

Success!

[Old-Polack]

Open Synaptic
Reload >> Mark All Upgrades >> Apply >> Apply

Then do a search for "kernel",
and install a kernel with the .pae extension (or even the .pae.bfs extension)....

Press Apply >> Apply
Then reboot the pc, select the new entry in your GRUB and boot up
Remember!
First boot with a new kernel takes some time (a few minutes)... You can press <Esc> during boot up to see what the computer is doing, but don't interrupt it!

Success!

The last kernel installed will use the default boot stanza. The links vmlinuz and initrd.img are changed to point to the last installed kernel during the kernel installation process. Before adding any new kernel, check your /boot/grub/menu.lst to see if there is a stanza to boot the existing kernel by name. If not, create one, or you will not be able to boot back to the older kernel once the new one is installed, should the new one not work properly with your specific hardware.

[rubentje1991]

OK, didn't know that (I myself never needed the old kernel again....)

So, extra warning!   

[Hondo]

I used Synaptic to update to Kernel to 2.6.38.2 pae and haven't had any problems (8 gb of ram).

[kjpetrie]

Actually, the kernel RPM's post-install script will normally create an entry for the running kernel by name, so O-P's step shouldn't be necessary, but it won't do any harm and could save the day if something goes wrong.

[Old-Polack]

Actually, the kernel RPM's post-install script will normally create an entry for the running kernel by name, so O-P's step shouldn't be necessary, but it won't do any harm and could save the day if something goes wrong.

Therein lies the problem. On none of my installations was there a named kernel stanza for the original installation kernel. It used to be that a newly installed kernel became the default, and the previously used kernel was given a named stanza so it could still be accessed. At some point that changed, and the newly added kernel became the default and got a named stanza, both, which would be fine if there was already a named stanza for the original install kernel, but I haven't seen that.

[Rudge]

I want to use 4GB of RAM.  How do I upgrade from kernel-2.6.33.7-pclos6.bfs to kernel-2.6.33.7-pclos6.pae

Thanks.

According to Synaptic, the 2.6.33.7-pclos6.bfs kernel supports 4g of ram. Is this not true?

"This kernel package contains the Linux 2.6.33.7-pclos6.bfs kernel patched with the BFS scheduler from Con
Kolivas. It is optimised for i686 CPUs, supports up to 4GB of system memory (highmem enabled). The
kernel timer interrupt is set to 1000 HZ, it defaults to using the 'BFS' scheduler, 'SMP' is enabled
and is compiled with kernel preemption enabled."

 

[Texstar]

I want to use 4GB of RAM.  How do I upgrade from kernel-2.6.33.7-pclos6.bfs to kernel-2.6.33.7-pclos6.pae

Thanks.

According to Synaptic, the 2.6.33.7-pclos6.bfs kernel supports 4g of ram. Is this not true?

"This kernel package contains the Linux 2.6.33.7-pclos6.bfs kernel patched with the BFS scheduler from Con
Kolivas. It is optimised for i686 CPUs, supports up to 4GB of system memory (highmem enabled). The
kernel timer interrupt is set to 1000 HZ, it defaults to using the 'BFS' scheduler, 'SMP' is enabled
and is compiled with kernel preemption enabled."

 

supports up to 4GB is correct. You are not going to get the full 4 gig because of various issues so you will get different results depending on your system. The most I've gotten is about 3.8 gig of free memory.