I have exactly the same problem and already do the Time Machine backups but bought the Seagate Plus Slim in order to save all my photos and videos on an external hard drive so I can get them off my MacBook Air and have them in 2 places. Just followed the steps to erase the drive and then selected 600 photos to export but it didn't work --- a window came up explaining the export operation failed and it listed the first 100 photos with error explanation on each that the file 'couldn't be opened because there is no such file'. What could this mean?
Seagate Backup Plus is preformatted exFAT for compatibility with both Mac and Windows computers. If you use the drive with only one type of computer, you can optimize file copy performance by formatting the drive in the native file system for your operating system—NTFS for Windows or HFS+ for Macs. Seagate Backup Plus Slim 1TB USB 3.0 Portable External Drive for MAC - STDS1000100. Type: External; Dimensions: 0.48' x 2.99' x 4.47' Weight: 0.35 lb. Package Contents: Seagate Backup Plus Slim portable drive for Mac HFS+ driver for PC 18-inch (45.72cm) USB 3.0 cable Quick start guide; Model #: STDS1000100; Item #: 9SIA4T01H90249; Return Policy. Backup Plus Slim, 18-inch (45.72cm) USB 3.0 cable, Quick start guide, Seagate backup software, Mac driver Compare with similar items This item Seagate Backup Plus Slim 2TB External Hard Drive Portable HDD – Black USB 3.0 for PC Laptop and Mac, 2 Months Adobe CC Photography (STDR2000100). Seagate Backup Plus Slim 1TB External Hard Drive Portable HDD – Silver USB 3.0 for PC Laptop and Mac, 1 year Mylio Create, 2 Months Adobe CC Photography (STHN1000401) 4.6.