Hitachi 320G mobile hard disk, divided into 4 areas, why only 200G memory.

A 320G hard drive loses around 40 capacity under XP.

You may lose a partition during partitioning and can repartition it.

There is also a possibility that your hard disk itself does not reach 320G, or only 250G, and the method to check the actual capacity is also very simple, use the software to view, or xp to view.

First of all, I will clarify with you a concept, hard disk and memory are different electronic devices, generally we call how many things a hard disk can hold "capacity", not called "memory" so it is very layman, easy to be deceived.

The 320G hard disk partition only sees a capacity of about 200G, which may have the following possibilities:

1. There are missing parts in the hard disk partition, that is, some capacities are not allocated to the partition;

2. The hard disk itself is 200g, either you got it wrong or you were deceived;

Since you haven't bought it for long, it is recommended that you quickly take it back and ask the person who sells the hard drive.

Here's how big the hard drive is and whether you're using it:

1. Right-click "My Computer" and select "Manage".

2. Click "Disk Manager" from the menu on the left, and the disk information will be displayed on the right side of the window.

3. Look at how big the disk is displayed in "disk0", a disk of 320G should be larger than 300G. If it's still 200g, it's the wrong one.

4. If there is still space left unused, you can format it yourself, and then you can use it. (The remaining space is gray, the white space is already used, don't format it).

Take a look in the disk manager of Windows, whether there is still some space that is not divided, divide it yourself.

There are hidden partitions.

You can see it from "My Computer" -> Management -> Disk Management.

Right-click on the My Computer icon, select "Manage", and select "Disk Management" in the window that opens, and you can see all the partitions on your hard drive.

In your case, there must be a hidden primary partition on your hard drive.

In addition,320G hard disk recognition capacity in Windows seems to be about 300 and a few jig.,No 320G,This is normal.。

It's normal, that's it, it's usually a fraction, just like a 1G USB drive is only more than 900 megabytes.

It's normal.

Generally speaking, according to the principle of computer design, binary, 1GB = 1024MB = 1024 2 KB = 1024 3byte.

However, for the sake of simplicity and production cost, manufacturers use the base system to produce storage products, 1GB=1000MB=1000 2KB... That's it. Then, as a hard disk, a part of the sector will be separated as a partition table after use.

Here's why.

For example, 250G can actually use 232GB, and 160G can use 149GB.

You right-click on the property to see the size, is it 320000... A lot of 0's behind ???

He is measured in bytes.

That to 320 is to 320g.

Mainly for conversion reasons, we are in 1000 base, and the computer 1024 conversion, and several times, so there is about 7% of the overhead, which is normal.

This is true for all drives, slightly lower than the nominal value.

Right-click on My Computer, Manage, Disk Management, select your portable hard drive, right-click to delete the partition first, and then re-partition it, you can choose how big it is.

Right-click on my computer, select Manage, and you can find Disk Management. Here you can see the identified capacity and partition configuration of your hard drive.

In addition, the formatted capacity of the 320G hard disk is probably more than 290G, which is not wrong.

My D630 officially says it's 160g

But it's actually only more than 140g, but it's not as exaggerated as yours.

Because the algorithm is different, the original hard disk is displayed in the operating system, the capacity is only 93% of the original, yours is normal at 297g, less than 200g should have a hidden partition, right? But it's not that big. Look for a master

If it is already under the Windows system, in the XP state, right-click on my computer to select management, and then select storage-disk management, enter the partition, but you can only divide the system partition, that is, C: the partition in the future, in addition, the above data should be backed up in advance when partitioning, the data on the part of the partition will be lost, and the data on the C: disk will not be a problem!

If you know how to use powermagic, you can try to **related software, but because he did not follow the upgrade, for the system**, it is not recommended to use, because sometimes he will change the partition startup information when using it and cause the system to be paralyzed, or try to partition it under the method I just said, if you don't want to install more than two operating systems on the same hard disk, there is no need to do that!

Three to four, at least three. A system disk, a storage disk (non-executable file), an application disk, .........Too much will affect storage, of course, it can be divided into a lot of things, but too much will affect the speed of data retrieval......It's good to do it yourself......

The fewer partitions, the faster the system recognition, I recommend dividing them into two zones. But you can also partition it according to your own usage, such as storing different kinds of data, backups, bootstrapping, etc.

Win7 right-click "Computer" and select "Management" to open the computer management page.

Click "Storage" - "Disk Management" on the left to view the disks without assigned drive letters, right-click and select "Change Drive Letter and Path" to assign each drive letter. Formatting is also available here.

It is recommended to copy all the data and reformat the hard drive.

The second is that it will not cause you to be in the situation you are in.

How can you delete those things in the first article, they are all hidden system files, and I personally recommend formatting the mobile hard drive again.

After the partition is deleted, do not write new data at will, and the data can be completely recovered. In order to avoid the wrong operation destroying the data again, you can first read the article in my space. If you still need assistance, feel free to hi me or q me.

It is recommended to reformat the portable hard drive.