My C drive is suddenly heavily occupied, and the C drive name turns blue at the same time?

You said that everything else in your win folder is blue except for the system files:

The first possibility: it means that your C drive uses NTFS format, and someone has compressed the disk!

The second possibility: if you don't use it for a long time, the system has its own function, which will turn the file blue for you to manage and view.

Suddenly full? First: take a look at the temp folder and some caches! Problems with temporary files.

Second: virtual memory. (This is the case when the memory is low.) Premise: Memory 512 or less).

Solution: First: Go to the system settings and set the virtual memory to"The system is automatic"

Second: Clean your hard drive temporary files once a week.

The blue color indicates that your C drive is in NTFS format, and someone has compressed the disk!

Suddenly full, take a look at the temp folder and some caches, and System Restore!

You say that there are two possibilities for this situation:

One is the virus, the once very popular virus, the specific name of which I have forgotten.

The second is that the automatic batch file is modified: know that some discs will run something as soon as the disc drive is released, right? That's how this document comes from!

There should be a total of two files to complete the cooperation, and the file name was forgotten for a while, Ha is a hidden file, an ini file, a dat file, you check it. Note that the DAT file is not.

It turns blue because the disk is an NTFS file system and compression is turned on.

The reason for the lack of space is not very clear, because the situation is complicated. Generally, it is the space occupied by temporary files, just clean it up.

Maybe you need to clean up the C drive.

Is the system slow? Kill and disinfect in DOS state, and then use XP cleanup tool to clean up.

Isn't it okay to clean it up?,There are a lot of software that can!!

ntfs file system.

Just change it to fat32.

That's the hard disk compression program that comes with the system, which is the option to compress the disk under the C disk attribute to save space, which will affect the system startup, and you can knock out the hook in the C disk attribute.

This phenomenon is normal.

There are several reasons for bai:

1. The file DU system of the C drive is NTFS.

2. In the driver attribute of the C drive, "DAO compresses this drive to save disk space" is selected.

3. In the folder options, select the compressed NTFS file with color display.

The above three factors have caused the name of the C drive to turn blue, which is a normal phenomenon.

This should be a file under the C drive, and you have done the encrypted file processing.

When the C drive is deorganized, select "Compress Old Files".

The name of the document is blue, because your document is stored in the NTFS partition, and it is set to compress or encrypt, if it is only compressed, it will not affect your normal use, and it can be opened anywhere. If it is encrypted, in this case, if it is not decrypted, as long as you change the computer, or change the system, and there is no backup key, the document cannot be opened, and Microsoft 128-bit encryption, there is no way to crack it. Not only documents, but any file that is under the NTFS partition and encrypted will have a discolored name.

Solution:1Find the document with the blue name, right-click, attributes, click Advanced below, see if the compression and encryption attributes in it are checked, if so, remove it, and then OK, apply it to all files, and it's OK.

2.In Tools - Folder Options - View - Remove "Show with Color......After the tick is applied, you can!

PS: The blue in NTFS format is compressed, and the green is encrypted.