PSoC Creator is only supported in windows. You will need VM software to run Creator on a MAC, however we do not support it officially.
We have a draft project for PSoC5LP enumerating as mass storage. Please note that this project is not 100% validated and can have issues.The project just enumerates as USB mass storage with a file in it. You can have a similar implementation for PSoC 4. The project does not contain the Bootloader part and you will need to add it on your own.
Thanks and Regards
P5LP_MSC.cyprj.Archive01.zip 2.8 MB