I repaired Win7 OS on Samsung SSD Hardrive and I lost all data on my Storag drive why?

Can you tell me exactly what you mean by lost all data? Is the drive letter simply not there, or have you checked the Storage Manager and found that the drive is damaged or RAW?

In the first case, you simply need to assign a drive letter for the storage drive. In the second, we can help you by suggesting recovery software.