[SOLVED] CentOS or Red Hat using external USB

JJJCR · 10-31-2013, 09:55 PM

hi guys, running or booting from external USB using CentOS or RedHat does it affect the performance of the OS?

anyone tried it?

John VV · 11-01-2013, 12:59 AM

usb1 or usb2 or usb3

the answer is YES
and usb1 or 2 a VERY big yes

usb3 ??? not so much but it will be slower than on an internal drive

DavidMcCann · 11-01-2013, 12:31 PM

If for some reason you want to run in that way, a system that copies itself to RAM is better: Puppy, Knoppix, Slax.

JJJCR · 11-03-2013, 01:27 AM

hi gurus, thank you very much for your advice.

I just actually want to use the USB booting for my RHCSA studies.

Don't have budget right now to buy for a new PC.

John VV · 11-03-2013, 02:06 AM

I would dual boot with CentOS 6.4
then upgrade to 6.5 once it comes out

cnet makes this very easy

Code:

su -
yum update 
--- if all up to  date them --
yum --releserver=6.5 upgrade

or use the CentOS 6.x repo instead of the 6.4
and a normal "update" will upgrade you

JJJCR · 11-03-2013, 06:41 PM

Hi John, thanks for the idea.

Dual booting makes sense.

suicidaleggroll · 11-03-2013, 08:17 PM

You could also set up CentOS in a virtual machine on your computer, assuming it has enough RAM. Much less invasive than dual booting, and completely risk-free to your underlying OS (setting up a dual boot runs the risk of wiping out your current OS if the re-formatting isn't performed correctly).

JJJCR · 11-04-2013, 01:36 AM

hi suicadaleggroll, virtual machine is fine.

but if I will go for virtual I will not be able to practice Red Hat Virtualization Manager.

As of this moment, a virtual machine cannot run another virtual machine on top of it.

But maybe few years now it might be possible.