I just bought a 3T hard disk, why does the computer display only 2 72T?

The hard disk with a nominal capacity of 3TB is displayed only in the computer, which is normal, and the reason why the capacity shrinks and becomes smaller is mainly due to the following reasons.

1. The nominal capacity of the hard disk and the computer operating system.

The capacity of the hard disk is calculated differently, resulting in capacity errors. Hard drive manufacturers calculate the nominal capacity in decimal format.

Mode: 1KB=1000bytes, 1MB=1000KB, 1GB=1000MB, 1TB=1000GB; And the operating system is in binary.

Computing capacity: 1KB = 1024 bytes, 1MB = 1024KB, 1GB = 1024MB, 1TB = 1024GB.

The nominal capacity of 3TB is calculated in the decimal system of the manufacturer: 3TB = 3000GB; The binary calculation method of the computer is: 3000GB * 1000 * 1000 * 1000 1024 * 1024 * 1024 2794GB .

2. When the hard disk leaves the factory, it will be written into the manufacturer information, hard disk information, firmware and other files, which will also occupy a part of the capacity space.

3. Boot boot partition and the existence of bad blocks occupy a part of the capacity space.

To sum up, it is normal for a hard disk with a nominal capacity of 3TB to be displayed on a computer.

There are two factors, one is that the capacity algorithm of the hard disk is not the same as the algorithm on the computer, so the results will be different, the larger the capacity, the greater the gap, and the other is that the hard disk itself will occupy a small part of the capacity, so your 3T hard disk display is normal.

This is normal, there will be less space in general, and this is due to the difference caused by different calculation methods!

Normally, the computer system conversion is 1MB=1024KB.

The disks have a usage, 3t disks, no problem.

Manufacturer 2T is calculated according to 2000G, and the computer is calculated according to 1024, of course, only, and the files on the hard disk still occupy a certain amount of space.

The actual usable capacity of the hard disk will be lower than the standard surge capacity. The formula for calculating the capacity of a hard disk is: total number of sectors per sector capacity.

For example, the WD WD1200BB hard drive has a total number of 234441648 sectors, each with a capacity of 512 bytes, and its total capacity is: 234441648 512 = 120034123776 bytes.

The capacity of hard disks is usually measured in GB, 1GB is 1024 1024 1024 bytes, but most hard disk manufacturers identify 10000000000 bytes as 1GB when they mark the capacity of their hard disks, so the actual usable capacity is often less than the nominal value.

As in the example above, the actual usable capacity of the WD WD1200BB hard drive is 120GB, while the manufacturer identifies it as 120GB. However, due to the fact that the actual available capacity is very different from the capacity displayed by Windows, it may be that one of the hard disks is scattered and there is another hard disk partition that Windows cannot recognize. You can run the fdisk program in the ms-dos window to see if there are any other partitions on this hard drive.

Completely normal, the manufacturer is calculated by 1 to 1000, and the computer is calculated by 1 to 1024. So there will be less.

Hello! First of all, this capacity display is normal.

Secondly, the capacity calculation in the partition operation is based on 1024 as a base, 1 KB per 1024 bytes, 1 MB per 1024 KB, 1 GB per 1024 MB, and 1 TB per 1024 GB. In terms of computing capacity, hard disk manufacturers use every 1000 as a base, 1KB per 1000 bytes, 1MB per 1000KB, 1GB per 1000MB, and 1TB per 1000GB.

So, it should be calculated like this: 2TB (to the fourth power).

Normally, there is also a small part of the hard disk that is used to hold the disk files, and you can't see it.

The actual capacity of each hard drive is different, for example, 1T, some people buy only 950GB, and some only 930GB

It's normal because the hard disk needs space to complete the data transfer to the computer.

Including USB flash drives, the actual capacity is not that much.