[GUIDE] How To Unbrick your 2TB/3TB/4TB My Cloud

My Cloud OS 3 Personal & Network Attached Storage My Cloud
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best gude, works exactly as layed out, kudos added.

edit reply: i did initally try to get this guide done in virtualbox with moderate sucess but ended up with not all the disk partions showing up in virtual disk image of physical drive but the rest worked just fine. abandoned the idea and did it live, but having test run it in virtualbox made it seem less scary.