How do a clean install of Yosemite?

How to Perform a Fresh Installation of OS X Yosemite on a Mac

1. Back up the Mac with Time Machine or by manually copying your most important data to an external drive – never skip backing up your important data.
2. Attach the OS X Yosemite bootable installer drive to the Mac, then reboot as normal.

How do I wipe my Mac and install a new operating system?

Erase and reinstall macOS

1. Start up your computer in macOS Recovery:
2. In the Recovery app window, select Disk Utility, then click Continue.
3. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

How do you erase and install a Mac?

Insert the Mac OS X installation disc into the CD/DVD drive and restart your computer. Hold down the “C” key while the system boots up. Select “Choose Installer” and choose “Open Disk Utilities.”. Select the hard drive that you wish to erase and click the “Erase” tab.

How do you install a disk on a Mac?

Only insert standard-sized CDs into your MacBook Pro. 1. Locate your MacBook Pro’s disc drive slot on the right side of the bottom panel. 2. Insert the CD, label-side up, into the disc drive slot. Continue to feed the CD into the slot until the drive registers the CD and pulls the disc the rest of the way in.

How do I reinstall Apple OS?

Follow these steps to reinstall macOS on your Mac: Start up your Mac while holding down Command+R until you hear the startup chime and see either a spinning globe or Apple logo. A macOS Utilities window will open, on which you will see the options to Restore From Time Machine Backup, Reinstall macOS, Get Help Online and Disk Utility.

What is the best cleaner for an iMac?

Macaroni. Macaroni is one of the best Mac cleaner software programs, and it will not only remove all the undesirable programs and files, but will also make sure that your iOS system is constantly updated, and it will speed up all other operations.