My Passport 500 GB is always connected to my laptop (drive F). It contained some 100 GB of backup. Today I’ve connected another My Passport 1 TB (drive H) to my laptop and transferred about 100 GB of data from drive H to drive F. After transfer I’ve found now drive F contains only that data, which was transferred today and all my backup seems lost.
Can’t understand what happened and how to restore backup in My Passport F? Windows XP SP3.