Basically the title. I want to have experience in installing different versions of different distros. Is this gonna break or slow my hdd in any capacity?
If you look at a partition as another hard drive,
Only you have all the hard drives on the one drive 
No it will not damage or slow it down having multi partitions,
Only if you fill up a partition ,, just like a normal drive can be filled up..
Hope this helps
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It depends a little bit what You have: HDD, SSD, m.2
A HDD is the slowest but when you write and delete often it is reliable. The other two's have Chips where the Stuff is saved - like a USB Stick. And at some Point they don't can not more writing. Sorry, but I can't give You a technical Description for the How and Why - I'm not so smart, haha! - but that is a technical Limitation of that kind of Storage. But in general it should give Numbers that say how much you can write.
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