PDA

View Full Version : [all variants] Ubuntu 10.4 : How to Use i386 instead of i686 kernel



arkangel
September 15th, 2010, 09:48 AM
Hi

I just upgraded my box to ubuntu 10.4 from 8.04, as usual fast and without complications.

I want to use the i386 kernel instead of the i686 (2.6.32-24) with aptitude and synaptics I have downloaded and installed but when I restart it jumps directly to gdm, no grub to choose,

I also try to unistall the i686 version trough synaptics, as I did in previous versions , but I couldnt find any linux-i686 entry

Any idea ?

Thanks

dino99
September 15th, 2010, 10:25 AM
i686 is named amd64, so i386=32 bits and amd64=64 bits

with synaptic install pae kernel to use full ram (>= 4 go) instead of the default generic

by default, grub2 menu is not shown if you run only one distro, to see it, either tweak /etc/default/grub or hold "shift" key down at end of bios process

efflandt
September 15th, 2010, 07:15 PM
i686 is not AMD64. AMD64 is 64-bit x86 (AMD or Intel) and i686 or lower are 32-bit. For example when I tried to boot 64-bit Ubuntu on my older Pentium w/hyperthreading at work, it refused to run (said I was trying to run 64-bit on i686).

I didn't know there were different 32-bit kernel versions other than an alternate version with PAE for larger memory support.

To see which kernel you are running see the output of uname -a

coffeecat
September 15th, 2010, 09:12 PM
I also try to unistall the i686 version trough synaptics, as I did in previous versions , but I couldnt find any linux-i686 entry


You won't. The generic kernel that comes with 10.04 can run both 64-bit and 32-bit systems. When running 64-bit you'll see x86_64 in the output of uname -a and for 32-bit systems you'll see i686. Why do you want i386? i386 processors date back to the 1980s. If you have a processor unable to run i686 code it probably belongs in a museum.