Will my Windows 10 SSD boot after formatting Windows 7 SSD ?

I have 2 SSDs and a few mechanical HDDs. I was dual booting (with Win 7 and 10) by changing the bios boot order for a while but have now decided to stick with Windows 10. By default Windows 10 loads. However I used to have Windows 7 as my boot drive. I want to now format the older SSD that Windows 7 is on and use it as a backup drive. Before I format my old Windows 7 drive I want to check that 10 will load okay. In the past years I have removed drives and found my OS no longer boots, so I don't want to make that mistake this time. I need to make sure my boot is coming from the 10 drive. So I have done a screen grab for you to see. Do I need to make the actual 10 partition active, or is just having the 500mb reserved partition as active ok ? The windows 10 drive is listed as such (C) and the Windows 7 drive is titled "Ready to Format" (H).

Thanks all. Screen grab below.

BlizzardUK said:

I have 2 SSDs and a few mechanical HDDs. I was dual booting (with Win 7 and 10) by changing the bios boot order for a while but have now decided to stick with Windows 10. By default Windows 10 loads. However I used to have Windows 7 as my boot drive. I want to now format the older SSD that Windows 7 is on and use it as a backup drive. Before I format my old Windows 7 drive I want to check that 10 will load okay. In the past years I have removed drives and found my OS no longer boots, so I don't want to make that mistake this time. I need to make sure my boot is coming from the 10 drive. So I have done a screen grab for you to see. Do I need to make the actual 10 partition active, or is just having the 500mb reserved partition as active ok ? The windows 10 drive is listed as such (C) and the Windows 7 drive is titled "Ready to Format" (H).

I'd just remove the Win7 drive, open the BIOS to assure it's not there then boot the computer. If all is well I'd put that drive back in, boot to Win10, go to Computer Management, Disk Management section and delete the partition on the Win7 drive then create a new one followed by formatting.

The issue I see with dual-booting is both drives are coded by the install but your situation suggests otherwise, both drives operate independently.