This PC can’t be upgraded to Windows 10
According to Microsoft, this message will appear on eligible computers that are plugged with an external USB device or an SD memory card. Due to these reasons, the May 2019 update is currently blocked on eligible machines. This is being done to avoid drive reassignment error. The Setup may reassign the drive letter – and this is bad! The drive letter reassignment is not limited to removable drives. Internal hard drives can also be affected. Microsoft has promised to resolve this error by issuing a future servicing update. Until then you can use the above workaround and get the update installed. Read: Your PC has hardware that isn’t ready for this version of Windows 10. If you need more help, take a look at these links:
