What color is the front LED on the single bay My Cloud? Blue, Red or some other color?
Sometimes one has to perform the “unbrick” procedure a couple of times before they get it right. One may have to remove the existing partitions first before creating the partitions per Fox_Exe’s directions. One should not change any of the partition values to match the size of their hard drive when creating the partitions. Use the exact values. It is often wise to perform a 40 second reset post unbrick just after one boots the unit for the first time after unbrick.
My Cloud OS 5: How to Reset a My Cloud OS 5 Device
https://support-en.wd.com/app/answers/detail/a_id/29445
And just to confirm that you actually have a second generation OS5 compatible single bay My Cloud. Check the P/N number on the bottom of the My Cloud enclosure, it should end in “-10”.
Edit to add: One may have to run a e2fsck on the second gen My Cloud’s sda3 partition if the unit shows a flashing blue front LED with no access.
