I have free upgrade win 10. I shrank the C and have 50 Gb. unallocated space. I tried installing win 7 on that but could not. Checked in bios but there is no choice. My motherboard is G31 Gigabyte. Is there a way to install 7? Thanks.
In Search off start button type Disk Management, 50Gb, shrink it to 100 GB's, simple partition, assign it a Drive letter, now you have partition to install Win 7, reboot, then point installation of 7 to that partition. Good luck.
Seems to be a Laptop?! How many partitions already exist on that HDD with your C Partition? Normally there's a hidden Partition for Factory Recovery, plus at least 2, or even 3 (if UEFI is runing) for Windows 10!! AFAIK if there already 4 Partitions, you could not create one for Windows 7!!
Thanks to both. It's desktop with 3 partitions. And succeeded in dual booting. The only snag is whenever I boot into 7, it starts disk check. Any way to stop it? Thanks
Indeed. It is fast startup. I remember I had the same issue with Win8/Win7 dualboot. Disabling fast startup helps.
Control Panel/Power Options, click on what the power buttons do on left, should see it, uncheck, then save changes at bottom.