I am having some trouble with my laptop. I had win 7 64 bit preinstalled on laptop and recently installed ubuntu 12.04 LTS. I was trying to find what could be the worst case for my laptop..I opened win 7 and went to disk management where I deleted the volume where ubuntu was installed.. when after restarting it showed no grub file found (the multi boot file), I took my pen drive and opened ubuntu from it as a trial.. Now there I deleted the space utilized by win 7 (i.e. C Drive). I did not deleted it completely. I kept some files there. I didn't touch the system reserve file.. now I restarted the laptop.. it doesn't go ahead because it has no "complete OS boot option" haha.. I have found that creepy situation..
I now want to format all partitions from my hard drive and start it as a fresh one.. for that I want to enter the COMMAND PROMPT that comes after booting from win7 cd and then enter DEBUG commands for formatting hard drive.
what should be the commands?