

After DU loads select your internal hard drive (this is the entry with the mfgr.’s ID and size) from the left side list. I tried on a 10.7.5 MacbookPro8,1, but it immediately gives me Partition map. My picks are either Drive Genius or DiskWarrior.

Open Disk Utility in your Utilities folder. There are three leading drive utilities for macOS: DiskWarrior, TechTool Pro, and the newest, Drive Genius. After startup do the following: Erase internal hard drive 1.
DISKWARRIOR FOR MAC 10.7.5 MAC OS X
The 10.5.8 Update is recommended for all users running Mac OS X Leopard versions 10.5 to 10.5.7 and includes general operating system fixes that enhance the stability, compatibility and security of your Mac, as well as specific fixes for: compatibility and reliability issues when joining AirPort networks. Select the icon for the external drive and click on the upward pointing arrow button.Once you plug in a hard drive and set up Time Machine, it will work automatically in the background, continuously saving copies of all your files, applications, and system files (i.e., most everything except for the stuff you likely don’t need to back up, such. Mac macOS (10.5 and above) has an excellent built-in backup tool called Time Machine.
DISKWARRIOR FOR MAC 10.7.5 HOW TO

