Thank you for replying back, sir.
I wanted to know under what conditions is a Original Installation disk is needed in process of creating just a recovery disk in windows 7,
knowing that wndows 7 wont be recovered, installed afterwards by that recovery disk.
Do windows asks for installation disk when a hidden windows image couldn't be found on hard drive, as I read in post, that windows installation on a computer for first time creates a hidden windows image which then can be used in these sort of situations.