Is the disk size listed along with the MFT size?

Question

NTFS

Good day.
I was interested in where the properties of the file are stored and during the "investigation" I came across information about the MFT (Master File Table), which is in NTFS (and maybe in other file systems).
The articles I read say that the MFT reserves 12% of the volume of the partition for its needs and can expand if this space is not enough.
Questions arose:
1. If I create a 100 GB partition on my disk, then, as I understand it, the system will reserve 12 GB (12% of the volume of the partition) for the needs of the MFT. Are these 12 GB inside the created partition or outside? Interested in how much data I can write to the partition - 88 GB or 100 GB.
2. Maybe the purchased disks have less space than it says on the packaging - is it the result of the fact that the OS has reserved part of the disk for the MFT? Although this is unlikely. I remember when I installed Windows 10 on a 1 TB HDD, the disk was already displayed as ~ 930 GB in the partitioning window, although maybe the OS calculated how much space to reserve for the MFT before installation and, taking this into account, showed the size of the disk?

Answer 1

1.
12 GB is part of the partition, and after creating the partition at 100.000000.000 you will see less free space.
To accurately calculate how much data you can write, you need to understand the difference between gigabytes and gibibits.
Again, if this is one file, then yes, almost 88 GB. If there are many small files, everything changes.
2. No, separately purchased discs usually show the size in gibibits, and this is without a file system at all. The amount of data that can be written will depend on the partitioning (when buying a laptop with a pre-installed system, there may well be several hidden partitions to "restore Windows to factory settings." And on the file system.
MFT is available only in NTFS, there is an analogue in other file systems. for example, in FAT - File Allocation Table, in Linux it is iNodes and so on.
Each file system has its pros and cons, and it makes little sense to win a few gigabytes just at the expense of the file system, especially for home use.
If there are problems with the place, it is better to buy a larger disk.