# Insert your '''removable SATA hard disk''' into the drive tray.
# Set your computer's drive selector switch to '''external''' (a.k.a ''position #4'').
# Power up the computer and insert the '''CentOS 7 Installation DVD''' into the DVD drive (refer to main OPS235 WIKI page on how to obtain Installation DVD), then power-off computer.# Wait until Restart the computer, and '''press the function key F10, press ENTER, and specify the CentOS device to boot''' (eg. DVD boots (could take a few momentsdrive).
{{Admon/important|DVD Boot-up Issues in Seneca's Computer labs|If for some reason, the Installation DVD does not boot:
:* Restart the computer, and '''press the function key F10 to specify the device to boot''' (eg. DVD drive).
:* If the user is prompted for a password, '''simply press ENTER''' (without typing any password) at the password prompt.
:* Choose the DVD drive from the list of devices avalable for boot.
:* You will need to perform this technique to ensure that CentOS boots from the hard drive (in future labs).
:* If you have tried this technique, and the CentOS Installation DVD does not boot, you may have to burn a new Installation DVD.|
}}
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