STEP 1: Double-click the NAV_11.dmg file to mount it. Then double-click this mounted drive to open it.
STEP 2:Open the Norton_AntiVirus_CE_11_Mac_w_DocsSupport.English folder in the removable drive.
STEP 3: Open Norton AntiVirusCorp.mpkg. This will start the Norton Antivirus Installer.
STEP 4: Click Continue.
STEP 5: Click Continue.
STEP 6: Click Continue.
STEP 7: Click Agree.
STEP 8: Click to highlight Macintosh HD (or whatever your main hard drive is named) and click Continue.
STEP 9: Click Install.
STEP 10: When the installer shows a reminder that it will need to restart, click Continue Installation.
STEP 11: After Norton has been installed, a small window may ask to run LiveUpdate. If you are connected to the Internet and want to run this update, click Yes. Otherwise, click No.
STEP 12: Click Restart. This will cause your computer to restart.