I have a few question about some product in the market that has 5 Activation/product when you buy it.
1. What will happen when I use the same computer with same hardware, buy I format it.. Let's say currently I use windows 7 Pro x64 and after format it I still use the same windows 7 Pro x64. Is that new activation will count?
2. What will happen when I use the same computer with same hardware, buy I format it.. Let's say currently I use windows 7 and then upgrade to Windows 10 or I change to Linux. Is that new activation will count?
3. What kind of upgrade will count the activation to -1? If I add new Hard Disk for data is that the new activation will count?
Yes, yes and yes.
#3 only if the OS/MT Platform is reinstalled on that new disk.
I think it's a bad practice why would you want to do that?
It makes me wonder if you use that computer for other things... not recommended, and the art is actually to have it running for as long as possible, stable and without touching it.
Which can perfectly be done when only used for the sole purpose of gaining capital.
If you insist you can try to burn a Ghost image of the freshly installed system+workspace and use that for recovery purposes.