Install Mac OS X on an external drive

Install, Boot, and Run Mac OS X From an External Hard Drive

https://www.online-tech-tips.com/mac-os-x/install-boot-and-run-mac-os-x-from-an-external-hard-drive/

-----------------------------------------------------------

Installing El Capitan 10.11.6 on iMac (Late 2012)

https://support.apple.com/en-gb/HT211683

1. Power on Mac holding down Command - R or Option key
2. From menu access Dick Utility
3. Reformat Hard drive and rename it ‘Macintosh HD’
4. Power down Mac
5. Insert El Capitan bootable US stick
6. Power on Mac holding down Option key
7. Choose USB disc icon and proceed with installation
8. Once installed use Apple Updates to update Mac
9. Once fully updated you will be prompted to download Safari Safari 11.1.2

Notes

• Safari 11.1.2 is the highest version for El Capitan 10.11.6
• Shipped OSX for iMac (Late 2012) is Mountain Lion
• Installation can be done directly with El Capitan bypassing the need to install Mountain Lion
• If errors occur during installation. Remove the Ram leaving one Ram module installed in the bay.
• Cmd-D will not work as El Capitan is not supported.
• Download  Java 7 for El Capitan

If you get this error 'This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading' The date maybe wrong.

In terminal type: date 1001010115

-----------------------------------------------------------

Code to make El Capitan bootable USB drive with Terminal

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/el-cap --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction

Mac tips

To clean out Font cache
1. Qut all programs
2. Open Terminal
3. Type atsutil databases -remove
4. press return

To remove applications use the free program AppCleaner
http://freemacsoft.net/AppCleaner/

To Safe Boot mode
Hold down Shift key at start up.

To zap Pram
Restart and hold down Cmd-Option P and R keys before chime.

Enter single user mode
Hold down Cmd - S at start up
in command line type /sbin/fsck-fy

Uninstall programs

AppDelete
http://lifehacker.com/software/disk-space/download-of-the-day-appdelete-mac-211094.php

Appzapper
http://www.appzapper.com/
http://lifehacker.com/software/featured-mac-download/uninstall-programs-with-apptrap-276797.php

Apptrap
http://konstochvanligasaker.se/apptrap/

Hazel
http://www.noodlesoft.com/hazel.php

Mac software

TextMate
http://macromates.com/