My Mac is running slow. Took it to apple store. They as iced to for at hard drive and install fresh copy of OS. I'm starting Mac in recovery mode and choosing format. It says 'formatting failed, partition can of be monunted/ mounted'
Any suggestions
MacBook Pro (13-inch Mid 2010)
Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After ** loads select your startup volume (usually Macintosh HD) from the
left side list. Click on the Erase tab in the ** main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
the Security button and set the ZeroData option to one-pass. Click on
the Erase button and wait until the process has completed.
4. Quit ** and return to the main menu.
Reinstall Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless.
But the way apple genius guy told me was to goto partition n format that. I want to format like to also remove OS.
See the above, follow the instructions. Formatting removes everything from a drive. You do not want to repartition the drive.
It's not letting to erase. It says failed cuz couldn't unmount hard drive
Are you booting from the Recovery HD? If so, and you still have a problem, then try erasing the volume by booting from the original Snow Leopard discs that came with the computer.
Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After ** loads select your Macintosh HD volume, click on the Erase tab in the ** main window.
3. Set the format type to Mac OS Extended (Journaled.) Click on the Erase button.
How to format MacBook Pro 13''(mid 2010)
