There is no “friendly” program that will do it for you if you are following one of the various unbrick methods. Only friendly method is cloning an existing (working) My Cloud drive to a hard drive that is the same or larger size. One such method of cloning using Clonezilla is discussed in the following post:
Generally the steps provided by user Fox_exe will work for most. It really isn’t all that hard and is only a dozen or so commands that can be copy and pasted into the Linux terminal window after adjusting for the hard drive location in Linux. It requires some basic Linux knowledge and a working install or boot disc/USB flash drive of Linux and the hard drive attached to that Linux computer (or VM install). On the first gen directions one may get an error or two at certain parts but generally it works to restore the My Cloud OS to a new hard drive. And one may get a red front LED after unbricking. If this happens try accessing the My Cloud Dashboard > Settings > Utilities and perform a System Only restore. That typically fixes the red front LED and the 0K in the Capacity chart issue.
User Fox_exe repositories:
Main Repository: https://fox-exe.ru/WDMyCloud/
First Gen: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/
Second Gen: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/
First gen directions:
English: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/Replace%20HDD%20-%20English.txt
Russian: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/Replace%20HDD.txt
File(s) used in first gen:
original_v03.04.01-230.tar.gz: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/Backups/original_v03.04.01-230.tar.gz
original_v04.01.02-417.tar.gz: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/Backups/original_v04.01.02-417.tar.gz
Latest first gen firmware: http://support.wdc.com/downloads.aspx?g=904
Second gen directions:
English: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/_Unbricking_en.txt
Russian: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/_Unbricking_ru.txt
usbrecovery.tar.gz: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/usbrecovery.tar.gz
Alternate method files:
uImage-wdrecovery: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/Developing/uImage-wdrecovery
uRamdisk-wdrecovery: https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen2/Developing/uRamdisk-wdrecovery
Latest second gen firmware: http://support.wdc.com/downloads.aspx?g=904
