The Windows 10 guide at Windows 10 - Upgrade Installation states "Temporarily disconnect all non OS hard drives until Windows installation has finished. This is to avoid Windows Setup from installing files on other hard drives by mistake."
I'm about to upgrade my desktop PC from Windows 8.1 Pro to Windows 10. I currently have the following internal drives :
SSD System Disk (containing OS partition C: & Windows UEFI partitions) - Drive C: contains Windows, most user files and all programs except games
Hard User Disk 1 - containing drives D: & X:. Drive D: contains some user's documents, photos, music & movies folder and game installations. Drive X: is used for system backups. The relocation of user files to Drive D: was done by right clicking on their original location on Drive C: then selecting a new location under the Location tab i.e. by using Option 2 in http://www.sevenforums.com/tutorials...-location.html
. Note the partitions on D: are not active.
Hard User Disk 2 - containing Drive E: for File History and other backups. Note the partitions on E: are not active.
Do I really need the bother of opening the case to disconnect and reconnect Disks 1 & 2 to upgrade to Windows 10? I've done other OS upgrades before with a similar disk configuration without problems. What may go wrong?