Having two copies of OS x at the same time with windows

[o0revenger0o]

Ok. I am a total noob when it comes to os x. Now i am running kalyway 10.5.5and i am too scared to update to 10.5.6 and then to 10.5.7. So what i wanna do is install

 

another copy of os x on a separate partition so i can test it. This is because i don't want to risk loosing all my data and stuff. So guys, do u think this is possible or it will mess

 

up the darwin boot-loader ?? Any suggestions or HELP would be greatly appreciated.

 

 

PLEASE REPLY!

[tk31]

thats a VERY good idea.. ive got 2 OSX installs on mine, and no it wont.. it'll just show up like this:

 

Darwin Boot loader.

(0,1) Mac OSX #1

(0,2) Mac OSX #2

 

thats IF you hit F8.

if you dont hit F8, it'll just boot into your latest install.

 

you can also change which bootloader you see when u start up your computer.

 

Insert your DVD, and hit F8 when it loads up. type in: -s and hit enter.

 

When it's done loading,

type in

fdisk -e /dev/rdisk0

 

then type in:

flag 1 or flag 2 (partition number u want to boot from)

 

then type:

quit

This writes it to the MBR.

then:

reboot

 

this basically changes which OSX installation boots automatically if u let it count down to 0.

You might get a "cant find MBR" error or a "cant write to MBR" error. dont worry, the MBR is still there.

As long as your cursor changes to "fdisk" or sometihng similar, your fine.