Throughout the classes I have taken I have accumulated a decent portfolio of projects that I keep regularly updated on Github.
More than ten years of experience using and installing Windows operating systems from Windows XP to Windows 10. I have been using Windows since I first used a computer. My time spent using Windows has equipped me to diagnose and solve any problems that may arise due to anything from hardware failure to malware. If I sit in front of a Windows machine I am immediately at home.
While I am primarily a Windows and Linux user I have also spent countless hours learning about and using Mac OS. My knowledge regarding Mac OS comes from installing Mac OS onto incompatible hardware. This is known as a "hackintosh" and it has been invaluable in my efforts to learn about Apple's operating system and how it differs from Windows or Linux. A hackintosh can take many hours to troubleshoot in order to simply achieve a stable installation so I am confident in saying that I am more than comfortable working on and troubleshooting Macs.
While my desktop dual boots Windows and Linux my personal laptop runs solely on Arch Linux. I did this a few years ago in order to force myself to get used to working in an unfamiliar operating system. I can say that I am now comfortable working on a linux machine and it is now my preferred operating system to program with. I can work with both Debian-based distribution like Ubuntu or Kali and also any arch-based distribution like Manjaro or Arch of course.
My experience with Android has consisted of taking unused android tablets and rooting them. Once I have rooted them I will install a custom ROM. I do not regularly use an android device aside from my Switch but my experience with rooting and flashing a custom ROM has led me to become comfortable with troubleshooting the most common issues that you may come across. I am capable of using ADB to communicate with the device from a computer and troubleshoot even without physical access to the device. For what it's worth I have also installed a custom firmware onto my Nintendo Switch which runs on a modified version of Android. This has only strengthened my level of comfort with the operating system.
I have been using iOS on my personal device since iOS 3 was the latest mobile operating system Apple had released. I have since jailbroken every iPhone I've ever had on every iOS that has released. Jailbreaking my phones was my first interaction with a debian-based package management system that prepped me for my later interactions with linux. While iOS itself may not be used much in a professional sense it has undoubtably made me more knowledgable when it comes to operating system security as these jailbreak tools are basically privilege escalation exploits.