The difference between what the OS reports and the marketing info on the product (GBs of difference) is almost entirely due to the different units used, because the filesystem overhead will only be MBs in size.
Also the filesystem overhead is not lost or missing from the disk, you’re just using it
When a drive is close to full capacity, those MBs lost due to units or secondary partitions from the format are the least of the worries. It’s time for an additional or larger drive, or look at what is taking so much space.
I believe OP was referring to the space lost after the drive is formatted. Maybe?
Yes.
The difference between what the OS reports and the marketing info on the product (GBs of difference) is almost entirely due to the different units used, because the filesystem overhead will only be MBs in size.
Also the filesystem overhead is not lost or missing from the disk, you’re just using it
When a drive is close to full capacity, those MBs lost due to units or secondary partitions from the format are the least of the worries. It’s time for an additional or larger drive, or look at what is taking so much space.