JPH05307446A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To obtain fault sector information in spite of the situation of a host processor. CONSTITUTION:When power is turned on and fault sector information is updated, a control part 12 outputs a control signal to a medium 13, reads fault sector information from the medium 13, outputs it on a disk data line 5, outputs the control signal to a memory 15 and stores fault sector information outputted on the disk data line 5 on the memory 15. The memory 15 outputs fault sector information which is thus stored on a display data line 9 and a display part 14 visually displays fault sector information outputted on the display data line 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device, and more particularly to a magnetic disk device which holds faulty sector information in a specific area on a recording medium.

[0002]

2. Description of the Related Art Conventionally, this type of magnetic disk device holds information of a defective sector in a specific area on a magnetic medium, and when connected to a host processor, it responds to a command from the host processor. The same sector information is read out and output to the host processor.

[0003]

The above-mentioned conventional magnetic disk device has the following problems. The failure sector information cannot be obtained unless a command from the host processor is input. Therefore, when the host processor is not connected, the host processor is inoperable for some reason, or when another command operation is being executed, the failure sector information cannot be obtained.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a magnetic disk device capable of obtaining faulty sector information regardless of the status of the host processor.

[0005]

In order to achieve the above object, the present invention according to claim 1 is a magnetic disk device for holding failure sector information on a recording medium, wherein the failure sector is held on the recording medium. The reading means for reading the information and the displaying means for visually displaying the faulty sector information read by the reading means are provided.

The invention according to claim 2 is the same as claim 1.
In the magnetic disk device described in the paragraph 1,
The memory is configured to store the faulty sector information read by the reading means, and a display unit for displaying based on the faulty sector information stored in the memory.

[0007]

In the invention according to claim 1 configured as described above, when the reading means reads the fault sector information held on the recording medium, the display means causes the fault read by the reading means. Visually display sector information.

Further, in the invention according to claim 2 configured as described above, when the display means visually displays the faulty sector information, the memory stores the faulty sector information read by the reading means. Therefore, the display unit displays based on the faulty sector information stored in this memory.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a magnetic disk device according to an embodiment of the present invention. In the figure, the magnetic disk device is connected to a host processor (not shown) via a host interface control signal line 1 and a host interface data line 2, and the host interface control signal line 1 and the host interface data line 2 are magnetic disk units. It is connected to the driver / receiver 11 in the device. The driver / receiver 11 is connected to the control unit 12 via the driver / receiver control signal line 3 and communicates with the host processor based on a control signal transmitted by the control unit 12 via the driver / receiver control signal line 3. Input and output the signal of.

The driver / receiver 11 is connected to the control unit 12 via the disk control signal line 4, and the control unit 12, the driver / receiver 11 and the medium 13 are connected via the disk data line 5. ing. Here, the control unit 12 is connected to the same medium 13 via a medium control signal line 6 and transmits a necessary control signal via the medium control signal line 6 to record and read data on the medium 13. Have control.

The present magnetic disk device is provided with a display unit 14 for displaying faulty sector information. The control unit 12 is connected to the display unit 14 via the display unit control signal line 7 so that the display unit 14 can be operated. It controls the display. The disk data line 5 is also connected to the memory 15, and the memory 15 is connected to the control unit 12 via the memory control signal line 8. The memory 15 stores the data on the disk data line 5 according to a control signal input from the control unit 12 via the memory control signal line 8. Further, the memory 15 and the display unit 14 are connected via the display data line 9, and the information stored in the memory 15 is output to the display unit 14 via the display data line 9. It has become so.

Next, the operation of this embodiment having the above structure will be described. The failed sector information is recorded in a specific area on the medium 13 under the control of the control unit 12, and when a new failed sector occurs, the same control unit 1
2 updates the faulty sector information on this specific area. The controller 12 controls the medium 1 via the medium control signal line 6 when the power is turned on and when the failed sector information is updated.
A control signal is output to the disk 3, and the defective sector information is read from the medium 13 and output on the disk data line 5.
Further, the control unit 12 outputs a control signal to the memory 15 via the memory control signal line 8 to store the faulty sector information output on the disk data line 5 in the memory 15.

The memory 15 outputs the faulty sector information stored in this way onto the display data line 9, and when the control unit 12 outputs a control signal to the display unit 14 via the display unit control signal line 7. The display unit 14 visually displays the fault sector information output on the display data line 9.

[0014]

As described above, according to the present invention, the faulty sector information is displayed on the display means regardless of the presence or absence of the host processor, so that the faulty sector information can be easily obtained when necessary. It is possible to provide a possible magnetic disk device.

[Brief description of drawings]

FIG. 1 is a block diagram of a magnetic disk device according to an embodiment of the present invention.

[Explanation of symbols]

 12 ... Control unit 13 ... Medium 14 ... Display unit 15 ... Memory

Claims (2)

[Claims] 1. A magnetic disk device for holding faulty sector information on a recording medium, a reading means for reading the faulty sector information held on the recording medium, and faulty sector information read by the reading means. And a display means for visually displaying the magnetic disk device. 2. The magnetic disk device according to claim 1, wherein the display means is a memory for storing the failed sector information read by the reading means, and a failed sector stored in the memory. A magnetic disk device comprising a display unit for displaying information based on information.