Can I upgrade to Windows 10 without losing everything?

Related questions

1. Is Windows 10 home 64bit?
2. Is there still a way to get Windows 10 for free?
3. Can I buy a Windows 10 product key online?
4. How do you check if Windows 10 is genuine or pirated?
5. How do you check if Windows 10 is activated permanently?
6. Is it Windows 10 is free?
7. Do I need to buy Windows 10 for new PC?
8. Does Windows 10 come on USB?
9. What happens if I dont activate windows?
10. Can I download Windows 10 to a USB drive?

Tags

1. #without
2. #taking
3. #upgrading
4. #backup
5. #restore
6. #losing
7. #upgrade
8. #windows
9. #before
10. #recommended
11. #however