Mounting External Hds

Just have a technical questions about mounting external harddrives.
I have alot of external HDs and since the english language has 26 letters, that is the max amount of HDs that can have an assigned letter. Now I like assigning letters because I keep a record of what is on which Drive.
Now at some point I'll have 2 HDs with the same assigned letter for example J. However I do label them so when one is plugged in its called "Backup Drive J1" and the other "Backup Drive J2" so J1 has J has its assigned letter but J2 has now K when both are turned on at the same time.
I have read about mounting to give a person more letters or really just freeing used ones up for reuse.
My first question is, does the folder that holds these HDs have to be on C?? So where the OS is on. When reading up on mounting it was always on c.
Second question is, when not in use I dont have them turned on. They are always (mostly) plugged in, since I have USB hubs with multi usb ports connected to my pc and via an power outlet, but each port has an on/off switch so when I dont need the HD it isn't turned on. Sry, second question is, what happens to the folder that holds these HDs? Would I have to create them every time I switch the hds on?! Or will everything work if I switched hds on?
Really would like to know this before I mounted anything.

Thank you in advance

 

Well, that is only the case if I have 2 external HDs with the same letter... All my drives have the letters that I assigned them and when turned on they have that letter.
So my HD that has the letter K will have it today, tomorrow and the day after that when turned on.
I understand what your saying in my case c is standalone (ssd where os is on), d/e is one hd but it does have 2 partions and the same is with f/g - one hd with 2 partions, but those letters are permanatly assigned, as is h/i since I have 2 burners installed. So A-B and J-Z are left for me. AND most of those if not all are now assigned to external HDs, however since they are until I need them off, so if I plugged in an USB stick right now then that would get J.
Honestly, I just tried that progamm, you might love it but I don't. It is so messy and confusing (the file with all the data) and I like clean and clear files with data. Simple things, nothing like that.
Like I said I lable them too, so I pick any of them and I know right away which I have. And I do sometimes have multi HDs turned on, since none of them are fully completed but do have a max size so every now and again I have to move a folder to a different HD so to make room on 1 hd for more files and since my other hds are getting fuller, that is why I've bought new HDs and the new ones have taken some letters that have already been assigned... That is why I was asking these questions which sofar no one has answered.

You haven't confused me at all, you just sadly didn't answer my questions.

 

You're not getting an answer because the question is confusing, "does the folder that holds these HDs have to be on C??" Folders holding HDs, what is that? Hard drives have folders.
Then you have a J1 and J2 that mounts as K, did you know you can name drives like "Photos-1, Photos-2"? The drives really don't need to get the same letter every time unless you have a script or app that is specific to a drive letter. Once a drive letter is assigned it doesn't mean it is gone forever, it can be reused.
A, B, and C drives are reserved by the OS. So you have 23 drives (21 counting 2 burners), you stated you don't hook them all up at once, so you are fine.
You can let Windows assign letters as drives are added, but there is a tool like UDLM https://www.majorgeeks.com/files/details/usb_drive_letter_manager_(usbdlm).html

 

Not really technical, so sry for not using the right or proper phrasing to make my questions less confusing but I'll try. When u read about finding away around the limit of letters for assigning you read about mounting. However all the articles I've read, they all go from the drive C where the OS is on. For example on one site they do it like this c:\dev\harddisk2 c:\dev\backupdisk c:\dev\harddisk3 for when you have more than one HD that you wish to mount in this case 3 external HDs. My question is then, does it have to be on C?
Sry if it came across that way but what I meant to say was "Backup Drive J1" was my first external HD that I assigned the letter J to and "Backup Drive J2" is one of the new HDs I bought 2 weeks ago and since all the letters have gone to the other HDs (like I said, I have alot of external HDs) so I have to start from the beginning so to speak. So round one is going to be all the letters with 1 after them and the second round will all have then the number 2 in the title then.
I lable/title them or whatever you want to call it because I have a document with then the Drive Letter and then to my standards a detailed list of what is on them.
The second question is really, do these mounted HDs always have to be on? Or can I safely remove them as always and just have them on when needed?

 

You really aren't getting what I'm asking.
https://askleo.com/26_drives_is_there_a_way_around_the_26_drive_limit_in_windows/
read that
maybe then you can answer the questions

 

But you are not using all those drives at once, you said you

by that logic you're not using all drive letters at once, so why the fuss?
That article explains mount points, see if this explains it - Mount Points

If you really need that much space, and you have a lot of drives, most people would build or buy a NAS, UnRAID or something a bit easier to deal with like a JBOD - "Just a bunch of disks" that consolidates several drives into one large one.

 

No, not sharing. Everything is just mine and mine alone. It's just all my data and files.
Yeah, that is what I currently do, but I do move things from one drive to another (to make room on 1 drive since I still add stuff, so therefor I have to move things between 2 drives) and just in case they both got the same letter then it would really be confusing but also annoying.. for me anyway...