The days when all the information used by a computer was located on just one disk are long gone. Today users can access files on a wide variety of media - hard drives, CDs and DVDs, flash drives, etc. And if we take into account that several such media can be connected, and even add resources of the local network and the Internet, then the user can literally juggle dozens of disks. True, an annoying disk access error can interfere with this.
The reasons why disk access errors occur can be roughly divided into several groups. One of them includes the unpreparedness of the disk itself to work with the operating system. Before writing or reading from such a medium, markup must be applied to it, which will be understandable by the version of the OS you are using. This process is called "formatting" and is carried out either by means of the system itself or by programs specially designed to work with this type of disk. For example, if you insert an unformatted floppy disk or optical disk into the appropriate reader and try to access it using the file manager, you will receive an error message in response.
Another group of reasons for disk unavailability include problems with user access rights. The security policy that manufacturers put into the operating system breaks down all users of the computer into groups, each of which is allowed certain actions, while others are prohibited. Among other things, access to files of any disk may be closed for the user whose account you used when logging in to the system. This problem occurs especially often when users who do not belong to the system administrators group access the OS system disk. All these rights are set by the administrator, but the operating system itself may malfunction, which will damage the entries in the access tables and, accordingly, make the disk unavailable.
The third group includes errors arising from the lack of access to the disk for technical reasons. For example, if it is a network drive, then it may appear in your file manager, but the network computer where it is located may be disabled. In this case, when you try to access the network drive, you will receive an error message. The operating system will give a similar error when trying to access a DVD installed in a reader that can only work with CDs, etc.
