second harddisk

[Frieder1]

Windows 10 do not see my second harddisk. Not in the device manager neither in disk management. In Bios setup saw the hdd.

Any suggestions? Thanks

[WAWood]

@Frieder1 

Windows will only see it if (1) it has a filesystem on it, and (2) has been assigned a drive letter.

You can check both of these as follows:

1) In the search area of the taskbar enter "create and format" (without the quotes) and select Create and Format Hard Disk Partitions when it shows.  That will open the Disk Management console.

2) That will show all the drives connected to your PC.  Check for the second drive and if it does not have a filesystem on it, you will need to format it.  If it does have a filesystem, you will need to assign it a drive letter.

3) Once it has both, Windows will then see it.