LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Debian
User Name
Password
Debian This forum is for the discussion of Debian Linux.

Notices

Reply
 
Search this Thread
Old 10-03-2006, 09:56 AM   #1
cougyr
Member
 
Registered: Nov 2003
Posts: 98

Rep: Reputation: 15
64 bit cpu, 32bit kernel?


My mobo is failing and I have to replace it. Computer hardware has progressed and my old 'socket A' is way out of date. The new mobo & cpu will be 64 bit; still Amd. Can I simply put it together with my harddrive and boot up? Will the 64 bit cpu run a 32 bit system?
 
Old 10-03-2006, 10:06 AM   #2
stress_junkie
Senior Member
 
Registered: Dec 2005
Location: Massachusetts, USA
Distribution: Ubuntu 10.04 and CentOS 5.5
Posts: 3,873

Rep: Reputation: 331Reputation: 331Reputation: 331Reputation: 331
As far as 32 bit vs. 64 bit kernel I believe that the 32 bit kernel is going to provide the same performance on a workstation and will give you fewer problems with drivers. The 64 bit kernel is mostly for using a huge RAM configuration. Other than that there is no significant performance gain using the 64 bit kernel.

You can certainly try plugging your configured hard drive into a new computer. If you are using a Linux distro that is configured to use modules rather than putting all of the drivers into the kernel then you might get it running on the first try. In theory it should work. In practice you'll just have to try it and find out.
 
Old 10-03-2006, 10:07 AM   #3
Chromezero
Member
 
Registered: Nov 2004
Location: Arizona
Distribution: Slackware, RHEL, others
Posts: 470

Rep: Reputation: 40
Yes, you can run a 32 bit OS on a 64-bit CPU. I've used a variety of 32-bit OS's on my Athlon 64. As for using the old hard drive, it should work. But, I can't guarantee anything.
 
Old 10-03-2006, 10:19 AM   #4
cougyr
Member
 
Registered: Nov 2003
Posts: 98

Original Poster
Rep: Reputation: 15
Thanks. Right now, I'm using the kernel 2.6.17-2-k7. I'm running Etch. How much is a "huge RAM configuration"? My new memory will be a gig.
 
Old 10-03-2006, 11:23 AM   #5
HappyTux
Senior Member
 
Registered: Mar 2003
Location: Nova Scotia, Canada
Distribution: Debian AMD64
Posts: 3,513

Rep: Reputation: 63
Quote:
Originally Posted by cougyr
Thanks. Right now, I'm using the kernel 2.6.17-2-k7. I'm running Etch. How much is a "huge RAM configuration"? My new memory will be a gig.
When you have > 4gb a 32bit kernel needs to reserve a hole in the memory that costs you something like ~500mb so if using 4gb you actually get ~3.5gb usable. You should be alright on putting in the old drive but will probably have to reconfigure the sound card, maybe nic but a kernel that new should have support for the new one and possibly the video card if you specified a BusID in the X config if that changed or brand of card changed requiring new driver.
 
Old 10-03-2006, 11:29 AM   #6
weibullguy
ReliaFree Maintainer
 
Registered: Aug 2004
Location: Kalamazoo, Michigan
Distribution: Slackware-current, Cross Linux from Scratch, Gentoo
Posts: 2,704
Blog Entries: 1

Rep: Reputation: 220Reputation: 220Reputation: 220
1GB is not huge. 4-16GB is huge. uP are designed to be backwards compatible. By design a 64-bit processor will run 32-bit applications (those tricky engineers). Same thing happened when 16- and 32-bit uP hit the market.

Note that this is different from certain operating systems that require new, state-of-the art, NASA hardware to run. Oh, wait, NASA is using Gentoo in one of their latest projects.

Last edited by weibullguy; 10-03-2006 at 11:30 AM.
 
Old 10-03-2006, 12:09 PM   #7
cougyr
Member
 
Registered: Nov 2003
Posts: 98

Original Poster
Rep: Reputation: 15
My video card is an ATI 7000 VE, which runs on DRI. It's old, but reliable. I intend to keep it for a while as it runs without proprietary drivers.
 
Old 10-03-2006, 12:55 PM   #8
crashmeister
Senior Member
 
Registered: Feb 2002
Distribution: t2 - trying to anyway
Posts: 2,541

Rep: Reputation: 47
I don't see a big difference in RAM use between my 64 and 32 installs.For sure nothing near the double some guys are raving about.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ubuntu 5.10 32bit or 64 bit on NF3/250? mman49 Ubuntu 2 03-15-2006 07:21 PM
64 bit CPU garbo73 Linux From Scratch 2 01-08-2006 01:47 PM
Running 32bit OS on a 64 bit system asmar Debian 3 09-24-2005 03:32 PM
Can I install 9.2-32bit on a 64 bit system? Riddick Suse/Novell 5 11-21-2004 06:12 PM
If you have a AMD 64 chip with Fedora 64 bit OS are there compatibility 32bit issues C++ Newbie Linux - Newbie 2 04-07-2004 10:54 PM


All times are GMT -5. The time now is 04:26 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration