I have an HD with two partitions, one of them (Sierra HD) was having enough space and I was trying to pass this extra space to the other partition. In this attempt, the partition that had more space was unavailable and I tried to restore it and inadvertently defined the other partition as a destination. When I realized, I closed the Disk Utility and now I cannot access any of the partitions and not even mount the HDs. Now, when I check the Disk Utility I saw that it did not help me to stop the restoration process: now I have two equal partitions. Is it possible to revert it or recover the RB partition and the respective files without using the time machine?