I am having the exact same issue after updating an Xpenology 6.1.7 to update 3 which I can't upgrade to a more recent build (tried and just won't work).
All my external drives attached worked with no problems at all until I updated to 6.1.7-15284 and now they are just not recognised at all. They are all USBv3 drives.
USB drive not recognized anymore 6.1.7-15284
in General Post-Installation Questions/Discussions (non-hardware specific)
Posted
I am having the exact same issue after updating an Xpenology 6.1.7 to update 3 which I can't upgrade to a more recent build (tried and just won't work).
All my external drives attached worked with no problems at all until I updated to 6.1.7-15284 and now they are just not recognised at all. They are all USBv3 drives.
Any advice?