Could not find Developer Disk Image error in xcode 7.3

I have yet to find one even if you download XCode 8.

Have since resolved this issue as well. There are a couple of related subjects here.

1. XCode name matters. I originally had XC 7.3.1 installed and it has the name Xcode.app. When XC 8 was installed, it went in as Xcode 2.app. That name caused many problems, including most builds failing.

2. I found a reference elsewhere to this name issue. I renamed 7.3.1 to Xcode731.app and then reinstalled 8 as XCode-Beta.app. Then builds worked correctly.

Once this is the case, the image can be fixed.

First use Finder to go to this directory: /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

You will see the 10.0 image folder there. Copy it. Then go to the 731 folder and paste the result. Then builds using 731 will work with iOS 10 devices.

Does this copying and pasting folder will work well or xcode require any other integration means can xcode pickup ios 10 simulator or we have do something ( inbuilt integration ) ??

Thecopy and paste of the 10 folder are all that is needed to allow XCode 7.3.1 to build and test apps on 10.0 devices. The simulator is another story and that may not be easy.

Yes Yes Yes!

Copying the ios 10 folder worked like a CHARM! I can finally build projects on Mac Sierra, for my iOS10 device, using XCode 7! (because Xcode 8 breaks tons of things).

AWESOME!

I did not find the ios 10 folder; OS 10.11.6 ad XCode 7.3.1