New
#11
Sorry for not making it clear in first post.
I installed new ssd in pc, then clean installed windows 10 without secondary hdd connected into pc. Then, I try to connect secondary hdd to pc and boot it, but then pc asks which one OS I want to boot from and offers only windows 7. So I unplug secondary hdd and with only ssd pluged in, windows 10 works. Then I changed ssd with windows10 and installed ssd with windows7, connected secondary hdd and booted normaly. Then I started copying files from secondary hdd to external hdd. After it was completed I turned off pc, swaped ssd and unpluged secondary hdd. Files are missing from external hdd and don't know how to copy those files.