TLDR: HR IS NOT YOUR FRIEND
For a six month status meeting, you should just focus on how you are getting along and any tools and or assistance you need to make you more productive. Keep it positive, and have solutions ready for any problems you wish to address
A one-on-one with HR is not like sitting down with a friend and talking about all the problems you have with every Tom, Dick, and Harry on the job. They don't keep confidences, and they won't stick by you when times get rough. They won't stick their necks out to protect you, and they won't work solely for your benefit.
HR exists to protect the company, and to make sure the company runs smoothly by addressing problems and dealing with them. For example, if you name five people who are causing you trouble, and nobody else has said "boo" about them, then YOU are what is keeping the company from running smoothly, and you will be dealt with.
For a one-on-one meeting with them keep it sweet, keep it simple, stick to the facts and focus on the positive.
Do not bring up any "problematic" things. Six months in, you're still a new hire and they're not going to upend things because a new hire says so.
If there is something SERIOUS that you wish to discuss with them, have it well documented, be factual, and have ideas/solutions ready that are as conciliatory and non confrontational as possible.
A six month status meeting is to determine how you are fitting in with the company, it is NOT a time to air any grievances.
If you do have issues, the way to address them is to tell them what you need to better do your job. They'll be real friendly if you do that. You want to bring them solutions along with the problem whenever possible. "Hey, my first six months here have been great. I have one problem. My hearing isn't the best, and I can't always tell when my phone is ringing, could I have a light so that I can see when it's ringing?" That kind of approach.