Today my Kodi HTPC, a Revo RL80 (Intel Celeron 1007 1.5GHz, 2GB RAM), gave me the option of upgrading to Windows 10. I thought I'd give it a go. I backed up Kodi and other such things and upgraded. The whole process was easy and quite fast.
Until I sat down to watch some TV! Kodi couldn't find any TV episodes. I checked Windows Explorer and my 6 month old Seagate 4TB Backup Plus external HDD was missing. I checked Device Manager and Disk Management and the HDD shows up, but does not have a drive letter assigned to it. I've checked/updated the drivers, installed software recommended by Seagate and I've followed their troubleshooting steps, but still no luck. I've also tried disabling Fast Boot, as recommened here but I don't seem to have that option so couldn't.
The drive is recognised (Windows bongs when the drive is attached/removed, and I have the option to 'Safely Remove...') and I can feel/hear it whir. I've attached the HDD to my MacBook, a Dell laptop and a Samsung laptop and i get the same problems.
Please please help! I refuse to give in and format the HDD as I have 3TB+ of data on it.