Enable your >4GB in Ubuntu Intrepid
The default kernel uses CONFIG_HIGHMEM4G, which does not let you fully use your huge RAM (RAM is now very cheap) way above 4GB (the limit for a 32 bit address space). The best thing you can do is to tune your kernel. To do it you can download the latest one (from www.kernel.org), then configure it with
make menuconfig
Making sure you load configuration from alternate file "/boot/config-XXXX-generic".
After you have loaded the original configuration, you can select :
Processor Type and Features -> High Memory Support
And then make sure 64GB is selected.
Now you can exit the configuration menu and save your changes.
You're ready to build the kernel. To make it the debian way, you can use:
fakeroot make-kpkg --initrd --append-to-version=-gralfca kernel_headers kernel_image
it will generate the linux_headers and linux_image .deb files which you can install with
dpkg -i linux_headers*.deb
dpkg -i linux_image*.deb
That's it. You will be able to use your RAM after you restart.
make menuconfig
Making sure you load configuration from alternate file "/boot/config-XXXX-generic".
After you have loaded the original configuration, you can select :
Processor Type and Features -> High Memory Support
And then make sure 64GB is selected.
Now you can exit the configuration menu and save your changes.
You're ready to build the kernel. To make it the debian way, you can use:
fakeroot make-kpkg --initrd --append-to-version=-gralfca kernel_headers kernel_image
it will generate the linux_headers and linux_image .deb files which you can install with
dpkg -i linux_headers*.deb
dpkg -i linux_image*.deb
That's it. You will be able to use your RAM after you restart.
posted by Gralfca at 6:27 PM
3 Comments:
Genial post and this enter helped me alot in my college assignement. Thank you as your information.
Again a good post. Offer your achates
Nice post and this mail helped me alot in my college assignement. Thank you for your information.
Post a Comment
<< Home