I recently upgraded my desktop from Windows XP Pro to Windows 10 Pro and can no longer access my 2TB Hitachi Touro Desk Pro external HDD. The drive does not appear at all in File Explorer but it is correctly identified in Devices and Printers. It also appears in Disk Management but is listed as “unknown” and “not initialised”. I get an I/O device error if try to initialise it and am unable to resolve the issue by assigning it a drive letter all the while the system thinks the drive is not initialised I have tried plugging the external HDD into different USB ports (both 2.0 and 3.0) and re-installing the 'USB Attached SCSI (UAS) Mass Storage Device' driver in Device Manager but all to no avail.

I know the external HDD works fine as it is recognised and readable on a different Windows 7 machine. Puzzle bobble plus wii. The issue appears to be specific to my Hitachi HDD as I also own two WD external HDDs; one 250MB and the other 1TB; and both of these work in Windows 10.

Then beam it up. The HGST Touro Pro external hard drive offers both local and cloud backup, features fast USB 3.0 and fast 7200 RPMs to help keep your digital files safe. It backs up all your content, all the time, automatically.

I have tried contacting Hitachi technical support for help but their rather uninspired, generic response has got me no nearer a solution Does anyone have any ideas how I can get Windows 10 to recognise my Hitachi HDD? I recently upgraded my desktop from Windows XP Pro to Windows 10 Pro and can no longer access my 2TB Hitachi Touro Desk Pro external HDD. The drive does not appear at all in File Explorer but it is correctly identified in Devices and Printers.

It also appears in Disk Management but is listed as “unknown” and “not initialised”. I get an I/O device error if try to initialise it and am unable to resolve the issue by assigning it a drive letter all the while the system thinks the drive is not initialised I have tried plugging the external HDD into different USB ports (both 2.0 and 3.0) and re-installing the 'USB Attached SCSI (UAS) Mass Storage Device' driver in Device Manager but all to no avail. I know the external HDD works fine as it is recognised and readable on a different Windows 7 machine.

The issue appears to be specific to my Hitachi HDD as I also own two WD external HDDs; one 250MB and the other 1TB; and both of these work in Windows 10. I have tried contacting Hitachi technical support for help but their rather uninspired, generic response has got me no nearer a solution Does anyone have any ideas how I can get Windows 10 to recognise my Hitachi HDD?