MyCloudExe2Ultra – where is the operating system?

On a 2TB MyCloud, the partition table looks like:

 Device          Start        End    Sectors  Size Type
 /dev/sda1        2048    4196351    4194304    2G Linux swap
 /dev/sda2     6293504 3904931839 3898638336  1,8T Microsoft basic data
 /dev/sda3  3904931840 3907029134    2097295    1G Microsoft basic data
 /dev/sda4     4196352    6293503    2097152    1G Microsoft basic data

Thus, during operation, a part is stored on the RAID. With new/empty plates, you can usually re-install the flash.