The single bay/single drive My Cloud units are formatted using the Linux format. If only the My Cloud enclosure or it’s internal motherboard are damaged one can extract the My Cloud hard drive and attach it to a USB to SATA adapter, a SATA docking station, or a spare SATA port on a desktop PC. From there one can attempt to read the drive’s data using Linux (like with Linux Boot Disc) or if using Windows a Linux driver like that from Paragon software or Ext2fsd. More info in the following thread.