Xcode 9.0 simulators "disappeared" : <p>I recently installed Xcode 9.0 GM on my machine. I fired it up to play around and the only simulators I see in the scheme are iPhone 8, iPHone 8 Plus, and iPhone X. I clicked "Download Additional Simulators" thinking the solution would lie there.</p>

<p><a href="https://i.stack.imgur.com/170tT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/170tT.png" alt="enter image description here"></a></p>

<p>I'm greeted with this screen, which is everything I previously had installed.</p>

<p><a href="https://i.stack.imgur.com/IxDvY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/IxDvY.png" alt="enter image description here"></a></p>

<p>I dug around on the Apple Developer forum and found <a href="https://forums.developer.apple.com/thread/63420" rel="noreferrer">this post</a> discussing a similar problem with a prior version of iOS. At the suggestion of one of the posters, I powered down my machine and booted it cold. I opened up Xcode 9.0 again and I have the same issue.</p>

<p>Any suggestions what I can get additional hardware to appear in my Xcode scheme? Thank you for reading.</p>
