You just bought a Macbook and transferred various data to it but after some time you face an issue no mountable file systems dmg on new Macbook pro. This error generally occurs when you try to install a new software through the dmg file. You are not able to use the software until it is install. May be the problem is with the dmg file, it is probably corrupted. The corruption can be caused sue to interruption in downloading or transferring the files, virus infection etc. You may fix no mountable file systems dmg on new Macbook pro if you get fresh copy of the dmg file. If the problem is still not solved then there must be the issue with the Mac OS X. You may have to re install the operating system but remember all the the other data that you had transferred will be lost. After you fix no mountable file systems dmg on new Macbook pro you can recover the data with the help of time Machine or with the source from where the data was transfered. If the backup is not accomplished then you can try Mac data recovery software. It will ensure the complete recovery of the data you have lost.