Ray wants to know if you can dual boot a Windows machine with Apple OS X. Leo says no. You can go the other way around and boot up to Windows 10 using boot camp, but you can't make a Windows machine run OS X unless you do a "hackintosh" setup, which is a direct violation of Apple's terms of service. Plus, Apple won't sell you a copy of OS X without a computer.
Cameron has a 2010 MacBook Pro with OS X 10.5. Can he use High Sierra? Leo says that Cameron should be able to. Frankly, Leo's not impressed with the latest batch of Macs. So using his older MacBook Pro is a good idea. Apple won't let him install it if it doesn't support it. Leo would also recommend getting an SSD to speed up his computer. It's a very easy upgrade and it speeds it up a lot. He can find an SSD for it at MacSales.com.
Al bought an old iMac G4 and wants to know if he can upgrade the software to Leopard. Leo says that the G4 is about 15 years old, and it may not support it because it's the old PowerPC chip. Leo recommends checking out EveryMac.com. He can look it up by serial number and it will tell him what software it can run. It's probably not going to be OS X.
Mike is using Terminal on his Mac and he's noticing a strange name at his command prompt. A day later it disappeared. Leo says that the public name of his computer may have been changed. He can learn how at osxdaily.com.
Ken uses multiple monitors and he has never been satisfied with how they are set up with color, and the bezels are distracting. He bought a 27" iMac to just rely on one large screen, but now he has a frustrating array of windows that are simply a mess. Leo says that Apple uses a virtual desktop management system that allows him to maximize a screen and switch between them by using the "Ctrl" key with the left and right arrow keys. That way he can focus on one active window and then easily change to the next task. It's much easier than trying to juggle multiple windows.
Alex would like to make a video of his daughter growing up using video and pictures. He was thinking about getting a Mac for it. Leo says Macs have a great video editing program called iMovie that comes with all models for free. Leo expects new desktops to come within the next month or so, but even if he didn't wait, he wouldn't be losing out on performance. Apple's iMac would be ideal, but it would cost him more. He could save some money and get a 21", but Leo recommends spending more and getting the 27" iMac. The larger screen really helps.
David's 2010 MacBook Pro has OS X 10.6.8 and some sites don't support older versions of Safari on Snow Leopard. Leo says that David may need to upgrade his OS. But the question is, can he? The latest update says you can't update to Sierra unless he has 10.7 or later. So he needs Lion. He can't upgrade straight to the latest version. So search the app store for OS X Lion. Here's where - https://itunes.apple.com/us/app/os-x-el-capitan/id1147835434?mt=12.
Darryl is getting messages to upgrade Adobe Flash on his Mac. Leo says do not reply to any message to upgrade your Flash, do directly to Adobe and get the update there. Hackers can compromise websites to include a bit of code to get you to click on a link. It's called a Phishing scam. Flash auto updates now. Or you can use Google Chrome and it will auto update as well. So never click on a link that offers to install an update to flash for you. It's a scam. Another thing you can do is redownload your browser, delete them and reinstall. That will renew certificates.
Jeff would like to know how to speed up his Mac. Leo says to try starting up the Mac in Safe Mode and then go into the System Preference pane to see what's starting up in the background. Jeff can also try zapping the PRAM (Command + Option + P + R). That can make it run faster. He should also browse his System Extensions folder.
Jeff should log into his unused Administrator account and see if it runs faster. If it does, then he'll know something is running in his account that's slowing it down.
Troy updated Windows 10 on his Mac and liked it so much he deleted macOS and now it's not working well. He's trying to reinstall it, but he can't. Leo says that's because he needs the Apple drivers through Boot Camp to run it. So he kind of has to have macOS on the computer, but he can shrink down the partition to as low as it can go. It could also be an issue with the EFI Master Boot recorder.