AppLayering 4.x – OS layer creation fails with error “An error occurred. The required file ‘OSType.txt’ was not found on your OS disk. Please obtain the application layering OS machine tools, run ‘Setup_x64.exe’ on your OS image”

AppLayering only supports MBR and Hyper-V Generation 1 machines. It does not supports GPT and Generation 2 machines.

Capture ELM logs and in camlogfile we could see, if GPT is being used.

2017-11-17 11:43:46,085 INFO Threadpool worker Shell: EXEC: Device Boot Start End Blocks Id System

2017-11-17 11:43:46,085 INFO Threadpool worker Shell: EXEC: /dev/nbd1279p1 1 4294967295 2147483647+ ee GPT

Note: App Layering will only look at the first partition or two, so if we are running setup64.exe and it’s saving on a 3rd or 4th partition, it’ll never look at that partition by design, so it will never find ostype.txt there.

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