How do you securely erase on a Mac?
To secure erase files in the Trash, just:
- Control-click on the Trash icon in your Dock, at the bottom of your screen.
- Press the Command button.
- Click Secure Empty Trash.
- And again, select Secure Empty Trash.
How do I uninstall old versions of OSX?
Navigate to the version of the file that you’d like to remove first. Once you’re there, move your cursor to the top of the screen, and voilà—your formerly hidden menu bar should reappear! Then choose File > Revert To > Delete This Version.
Is it possible to delete all the files on a Mac?
Here’s how to securely delete all of your files, then install a fresh version of macOS. If you’re selling or giving away your computer, this is the only way to make sure whoever ends up with your Mac can’t access to your files, and won’t have to deal with any modifications you’ve made to macOS over the years.
How do you reinstall Mac OS after Information Wipe?
With your information wipe complete, you are now ready to reinstall macOS. If you booted from a functioning recovery partition, click the “Reinstall macOS” button. The installation process will begin. If you booted from an USB disk, click “Continue” to advance to the installer.
Why was secure empty trash removed in OS X 10.11?
The Secure Empty Trash feature was removed in OS X 10.11 because Apple felt that it could not guarantee secure deletion on the fast flash (SSD) drives that most of its modern models now use. If you use a traditional hard drive with OS X 10.11, and are comfortable with the command line, you can use the Mac’s srm command to overwrite the file.
How do I reinstall Mac OS from recovery partition?
If you booted from a functioning recovery partition, click the “Reinstall macOS” button. The installation process will begin. If you booted from a USB disk, click “Continue” to advance to the installer. You’ll be asked which hard drive you want to install to. Choose the Macintosh HD you named earlier. Just like that, macOS will begin installing.