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How to make a Bootable External Hard drive for a Mac with multiple Operating Systems

This is a quick video on how to create a bootable hard drive and install 3 Operating Systems. For this video we are going to install 10.10 Yosemite, 10.11 El Capitan, 10.12 macOS Sierra. You must create a bootable USB of each of the Operating system before you reboot the machine to run the installer. Here is a link to the website to help you do this.
http://macuser.org.uk/2017/02/02/command-line-to-create-usb-os-stick/Once you have created your USB Bootable OSX drive reboot the machine you will use to install the OS to the external drive. YOU MUST PRESS THE ALT KEY ON THE REBOOT. This will open up the bootable options for the machine. Select the USB bootable installer you created and run through the installer selecting the Ext hard drive for that OSX as seen in the early part of this video i.e Yosemite 1010. Once the OSX is installed create use for the new OSX you just installed on that drive and run the updates. Repeat the process for all other OSX you want to install.
Remember only certain machines will boot certain OSX systems. In short anything under 2010 will not install macOS Sierra (there are a few exceptions)
Here is the video on how to create a USB installer:
https://www.youtube.com/watch?v=FOjyy5L23R0&feature=youtu.be

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How to clone a Internal hard drive on a Mac

Here we have a Server HD that needs to be cloned. In this technique we boot to an external drive on the machine in question and clone the Server HD to another Hard drive using Carbon Copy Cloner. This is a very simple method to make a clone of a existing system. This application can be used in many different circumstances and is great to back up any system you have running on a Mac. Hope you like the video.

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How to add and delete a user on your Mac

A quick video on how to create a new user on a mac, including the different types of user accounts. Also showing you how to delete a user from a mac.
A point to note: Before you create new user accounts, it’s important to understand the different types:

  • Administrator: Administrator accounts are special accounts that are used for making changes to system settings or managing other people’s accounts. They have full access to every setting on the computer.
  • Standard: Standard accounts are the basic accounts you use for normal everyday tasks.
  • Managed with Parental Controls: Managed accounts are the only ones that can have parental controls.
  • Sharing Only: If you want to let someone use your computer, but you don’t want to create a user account enable the person to access only the files and folders you specify.

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How to turn the guest user turning on and off on a Mac

Here is another short video tip on how to enable and disable the guest user on a Mac. Guest user enables people to log into an account without a password. Anything the do will not be saved .i.e browser history. They can edit and share data across the network if that feature has been enabled when the guest account was turned on.

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Repair your hard drive after a power failure

Disk Utility and how to use it:

Housekeeping on a Mac has never been easier. In this video we show you how to check your hard drive is ok and that the data on it including the operating system is journaled correctly within the machine. Doing this simple task once a month can help preserve the life of the hard drive and ensure if your machine encounter a hiccup such as a power failure won’t affect the machine operation effectiveness and more important enable the machine to boot correctly.