You must be worried about data recovery from crashed external HD Mac ? The external hard drive is pretty useful as the Mac storage capacity is quite small and also it would be easy to transfer data through it to any other system. However the user may suffer data loss from it due to deletion, when the drive is abruptly disconnected from the system. The drive may also get infected by virus or even had a power surge situation. The file system of the drive can also get damaged. If there were any important files saved in the drive then you must be worried about data recovery from crashed external HD Mac. The data can be easily recovered if you have to copy of the lost file as a backup after the drive is fixed by formatting. When the backup is not available then you can use the Mac data recovery software which will scan the drive comprehensively and will make the found files appear in the preview window. You can select the files for recovery and also provide the location where the file will be restored. You can easily access the files. So you should download the software now and use it.