New
#11
The screen print in your link isn't for an EFI partition.
The active partition in that screen print looks like it's for an MBR (not EFI) PC.
There is no label on that partition, but usually it's labeled System Reserved, and is where the boot-loader is stored.
Looking at your DM screen print I think you installed Win 10 on Disk 2 with the Win 7 Disk 0 connected.
If that's true, then Win 10 updated the existing boot-loader on Disk 0.
What this means is if Disk 0 crashes, you won't be able boot Win 10.
There is nothing wrong with that setup, you should just be aware of this.
You would need to boot with Rescue Media such as a Macrium bootable CD or flash stick to fix things if Disk 0 crashes.
If Disk 0 was disconnected when you installed Win 10, it would have created another boot-loader for Win 10.
When installing Windows it's best to disconnect all storage drives except the drive you are installing Windows to, and the device you are installing Windows from.
I can post a screen print of a triple-boot PC where each OS is on a different physical drive and each have their own boot-loader, if you want to see what it looks like.
I can disconnect any 2 drives, and still boot the PC with any single drive/OS connected.