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#250
No. Only one partition can be "Active" at a time.
In simple language, "Boot Loader" software changes the "Active" partition when you select the Operating System you want to start. So when you select "Suse" from the boot menu, the software marks the "Suse" partition "Active" so the computer can boot to it. Then after, if you now want to start Windows, the "Boot Loader" software marks the Windows System partition active so the computer can boot to Windows.
If you have removed "Suse" and/or its "Boot Loader" and the "System Reserved" is not marked "Active", then as the warning message said: you do not have any "Active" partition to boot to. You must mark the "System Reserved" partition "Active" so Windows can boot.
When you select a different partition and mark it as "Active", then the first partition is no longer the active one. There can only be one "Active" partition on a hard drive.
Cheers!
Robert