Booting from dvd?!

[RichyCro]

Ok, i have iMac G4 1ghz 1gb ram.
And tiger burned on the dvd.
When i put the dvd in, restart and push C key or Option(ALT) key,
nothing happens.
How can i boot from that dvd and finally install newier OSX?
PLS

 

[stridemat]

Did you burn the DVD yourself?

Have you burnt it correctly?

 

[RichyCro]

Did you burn the DVD yourself?

Have you burnt it correctly?

Yes i burn dvd myself.
and i think its burned correctly
i cant even open dvd on MAC, i just put DVD in and after few minutes
it says You put blank cd in bla bla... and then i push ok and MAC eject
dvd and say's that cd isnt supported for burn(something like that)

EDIT: Ok, my DVD reader works fine -.-' ohh frustrations
For all: i use nero>burn image to a file( i renamed .dmg to .iso ) and my dvd reader on mac cant read the <biiip> dvd-r :'(

 

[dejo]

Where did you get this DMG of Tiger from?

 

[stridemat]

Where did you get this DMG of Tiger from?

This is why I haven't responded! I would have at a guess that its not legal, but I'm willing to be proved wrong.

 

[RichyCro]

omg it is legal i think, my friend gave it to me :S
im not a criminal