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Selecting correct distro for running in a virtual machine
siegfried 
31/8/08 12:29:11 AM
Champion

I was wondering if I should get a 32bit or 64bit distro for running in a virtual machine running on the main box in my sig. Host OS is XP 32.

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Otherwise known as luftkopf

Gigabyte GA-MA78GM-S2h (AMD 780G) | Athlon X2 4600+ | 2GB OCZ RAM | A couple of ancient IDE 60GB HDDs | Winfast DTV2000H | Samsung 226BW | XP SP3.
Oh, and a G5 iMac, G4 PowerMac and a Titanium PowerBook...

iamthemaxx 
31/8/08 1:14:26 AM
Mod
SuperHero

Immortal


Do you have a requirement for either one?

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robzy 
31/8/08 2:40:05 AM
Hero
Immortal


Correct me if I'm wrong, but doesnt the fact that the host OS is 32bit force the guest OS to be 32bit?

If not, I'd imagine that running a 64bit OS guest on a 32bit OS host would lead to shameful performance.

Rob.

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siegfried 
31/8/08 9:31:45 AM
Champion

I don't really have any specific reason to be running Linux, let alone any specific type. I just want to get back into it a little after having been out for several years. I just prefer the idea of a 64 bit CPU running a 64 bit OS.

Doesn't the hardware virtualization allow the virtual machine to pass through the host OS? I admit my understanding of virtual machines these days is somewhat less than it used to be.

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Otherwise known as luftkopf

Gigabyte GA-MA78GM-S2h (AMD 780G) | Athlon X2 4600+ | 2GB OCZ RAM | A couple of ancient IDE 60GB HDDs | Winfast DTV2000H | Samsung 226BW | XP SP3.
Oh, and a G5 iMac, G4 PowerMac and a Titanium PowerBook...

Jeruselem 
31/8/08 10:05:28 AM
Guru

Quote by robzy
Correct me if I'm wrong, but doesnt the fact that the host OS is 32bit force the guest OS to be 32bit?

If not, I'd imagine that running a 64bit OS guest on a 32bit OS host would lead to shameful performance.

Rob.



32-bit OS would run a 32-bit limited VM - hence you can never run 64-bit OS as guest. No issues running 32-bit OS using a 64-bit VM.


Edited by Jeruselem: 31/8/2008 10:06:59 AM

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PC 1: XP Home SP2, Opty 165@1.8Ghz, GEIL 1GB PC3200, 320GB SATA Cuda ES,XFX 9600GSO 580/700x2/1450, Seasonic S12+ 550W
PC 2: XP Home SP3, XP 3000+@2.24 Ghz, 1GB PC3200, 80GB IDE,ASUS nVidia 6800 512MB, Antec PlanetWatts 380W

robzy 
31/8/08 2:36:42 PM
Hero
Immortal


Quote by Jeruselem
32-bit OS would run a 32-bit limited VM - hence you can never run 64-bit OS as guest. No issues running 32-bit OS using a 64-bit VM.


Just as I assumed :P It would theoretically be possible to run a 64bit Guest in a 32bit Host though.

Quote by siegfried
I don't really have any specific reason to be running Linux, let alone any specific type. I just want to get back into it a little after having been out for several years. I just prefer the idea of a 64 bit CPU running a 64 bit OS.

Doesn't the hardware virtualization allow the virtual machine to pass through the host OS? I admit my understanding of virtual machines these days is somewhat less than it used to be.


Virtualisation doesn't allow the virtual machine to pass "right through" the host, it just kind of acts as an intermediate step.

The issue is (and don't quite me on this, use this as just a concept) while running a 32bit Host OS your CPU is running in "32bit mode". In order to run a 64bit Guest you need your CPU to be running in "64bit mode" which can really only be achieved by running a 64bit Host OS.

Rob.


Edited by robzy: 31/8/2008 02:37:40 PM

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siegfried 
31/8/08 3:49:41 PM
Champion

I got on to a friend of mine who is a programmer, and a linux/opensource fan, and he informs me it is theoretically possible, but not feasible to install a 64bit guest onto a 32bit host.

So I'm off to download openSUSE 11.0 i386


Edited by siegfried: 31/8/2008 3:58:31 PM

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Otherwise known as luftkopf

Gigabyte GA-MA78GM-S2h (AMD 780G) | Athlon X2 4600+ | 2GB OCZ RAM | A couple of ancient IDE 60GB HDDs | Winfast DTV2000H | Samsung 226BW | XP SP3.
Oh, and a G5 iMac, G4 PowerMac and a Titanium PowerBook...

robzy 
31/8/08 5:39:53 PM
Hero
Immortal


Quote by siegfried
I got on to a friend of mine who is a programmer, and a linux/opensource fan, and he informs me it is theoretically possible, but not feasible to install a 64bit guest onto a 32bit host.


Which is funnily enough exactly what I said a post up :P Glad that you've got the answers you were after.

Rob.

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עם ישראל חי

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