After installing Hard Drive Not able to install Mac OS Leopard
I replaced the hard drive before that I back it up on 1 TB external drive. After I installed the hard drive I connected the exteral drive and reinstalled everything back on computer and followed all the steps how to reformat the drive but I did not have an option of partition so I did not do so. Now everytime I start computer there is grey screen with ? mark. I try to install the Mac os Disk it shows install DVD when I press option but then nothing. I have to use external drive in order to use the computer. How can I fix this and not have to plugin external drive.