What does a jumper mean on a hard drive? HP and Compaq Computers - Jumper Settings for Hard Drives, CD, CDRW, and DVD Drives

Let's talk today about jumpers on your hard drive. More precisely, we will talk about what these jumpers affect.

It's no secret that hard drives have a small jumper, which is located near the connection cable. What does this jumper affect and what is the correct position to install it in? One has only to make a reservation at the beginning that the article will not be complete on this topic. There are several varieties hard drives, With in different ways connections and different form factors, in which the jumpers are different and are completely absent. Today we will talk about old hard drives and IDE connection options.

A jumper on the hard drive is needed to organize the correct launch of several hard drives. Imagine a situation where you have two hard drives installed in your system. It is necessary to determine which of them is the primary one, from which the operating system starts, and which is the secondary one, loaded as additional disk space.

There are two main modes for setting the jumper. The first one is called Master and the second one is called Slave. There are also slightly different ones from these two, but we will not clutter up the article, we will pay attention only to the very basics of this issue.

In Master mode, you must place a jumper on the main hard drive, from which the operating system will be loaded. In Slave mode, install a secondary hard drive. The system reads this information at startup and sends a signal further, so that in the end you have the required hard drive loaded as the main and second hard disk as a secondary one.

Which mode corresponds to which you need to look at the sticker, which is located near the jumper. Typically the manufacturer specifies the required jumper positions.

The jumper itself is a small chip, by installing which you properly close the contacts of your hard drive. The startup sequence of your hard drives will depend on how you close these contacts.

Do not forget that the startup sequence of your devices, be it hard drives or a drive, must also be configured in the BIOS of your motherboard. The setup option is more concerned with the constant use of two or more hard drives. If you need to install a second hard drive one-time in order to copy information, you just need to play with the jumpers.

When the computer boots, press the Delete or F2 key and go to the BIOS section called Boot. There, place all devices in the sequence you need.

For example, the first is the hard drive on which the operating system is installed, the second is the secondary hard drive, and the third is the drive.

1st Boot Device- first boot device[xxx Drive] - the device specified in this line will be the first from which the BIOS will try to load the operating system.

2nd Boot Device - second boot device [xxx Drive] - the device specified in this line will be the second from which the BIOS will try to load the operating system.

3rd Boot Device - third boot device [xxx Drive].

If you are installing a new operating system Windows systems, then you need to set the drive first in order for the Windows installer to load.

Thus, today we learned something about jumpers and the boot sequence of devices. If the article was useful to you, then come again. After all, our database of articles is updated every day!

Before rearranging any items on it jumpers, shut down the operating system, turn off the power to the computer, remove hard drive cable and power cable, having previously memorized their positions, and then remove the drive itself (without this you will not see the sticker located on it).

Check out the images on the sticker. In case you have a hard drive with IDE interface, on this sticker there are usually three layouts of jumpers: for the “Master”, “Slave” and “Cable select” modes. Sometimes there is a fourth picture showing jumpers in order to artificially reduce the storage capacity to 32 gigabytes (this is sometimes necessary for working with older motherboards). In the operating room Linux system using this mode is usually not necessary even when using such boards, since this OS runs with hard drives directly.

Sami jumpers locate on the same side wall as the connectors. You can determine where the top of the field for installing jumpers is based on the landmarks, which are usually also shown in the figure. Such a reference could be, for example, a missing pin.

Sami jumpers move using miniature pliers. Sometimes one drive configuration option requires fewer jumpers than another. Therefore, if you have any extra jumpers, save them, as you may need to return everything back later.

In very rare cases, the sticker with the illustration on the drive is missing. If you find yourself in such a situation, report the drive model to where specialists communicate repair of hard disks. Ask them for a diagram of the location of the jumpers on the drive of this model.

When two devices are located on one loop (no matter hard disks or optical drives), you should either select the “Master” mode on one of them, and “Slave” on the other, or select the “Cable select” mode on both.

For drives with SATA interface There are no "Master" and "Slave" modes. Their jumpers are intended for other purposes. Most common jumpers to reduce the data exchange rate from 3 to 1.5 gigabits per second. They are designed to make the hard drive compatible with older motherboards. Sometimes there are jumpers that control the energy saving mode. Their purpose is almost always indicated on the drive sticker.

After changing the jumper positions, place the drive in place with the board facing down, secure it, then connect the cables in the same way as they were connected previously. Turn on the computer and make sure that all drives are functional.

Sources:

• jumper purpose

When in hard drives an 80-wire cable (IDE cable) is used, you can connect two devices to one cable, “connected” using jumpers. A typical jumper is a jumper that determines the advantage of one hard drive when installing a second and additional ones. The idea is to short-circuit two contacts on system board.

Instructions

The main one will be called “master” - the main system is loaded from it, and the secondary one will be called “slave”. This is indicated by the inscriptions on the jumper and on the board. Nearby is usually placed, on which the different positions of the jumpers are indicated. This diagram is not for every model and different manufacturers it is different. Information on connection can also be found on the manufacturer’s website depending on the computer model.

You don’t have to strictly assign a master/slave to the device, but set it to Cable Select. When the computer is running, the disks themselves will be distributed, which of them is dominant and which is secondary. This happens by connecting the device to one or another connector on the cable.

When connecting the second hard drive, load one of the cables with two hard drives, defining the “Master” and “Slave” on the motherboard.

Connect the CD-ROM with a second cable to the second channel on the motherboard and set it to “Master”. If the system has one hard drive and a CD-ROM, then it would be correct to determine their location on different cables so as not to load the controller.

Video on the topic

Return damaged hard drive disk You can visit the store within 14 days after purchase after a quality examination and a written application. Bring the hard volume back to life, i.e. try to recover lost data from it, in some cases you can do it at home using special programs.

Instructions

As soon as there is a loss of information stored on disk That is, you should immediately turn off the computer, open its case and remove the hard drive. These actions are necessary because data that could be recovered will most likely be overwritten when the system starts. Therefore, do not try to work on a computer with lost information.

Try connecting the hard drive with data to another computer in Slave mode. Use the specialized PC Inspector application File Recovery, available for free download on the Internet. The program will search deleted files and display the report on , Select the required ones and save them.

If volumes are not displayed in the application " Windows Explorer» It is recommended to use the MBRTool program. The program is free and distributed freely. The cause of the problem may be damage to the master boot table (MBR), or more precisely its sector tables. MBRTool will analyze existing file structures and repair damaged tables.

Check disk and on damaged sectors. Please note that service center technicians do not recommend using the built-in ScanDisk or F Disk utilities. Preference is given to the hard drive manufacturer's software. disk and recovery - using the specialized dd_rescue utility. It is believed that this Linux program can bring back to life the maximum number of bad sectors Winchester.

The appearance of a characteristic odor may indicate that the controller. In this case, you can try to replace the board with the same one from a spare one. disk A. A screwdriver is sufficient for this operation. For more serious mechanical damage, it is recommended to contact service center.

Video on the topic

Sources:

• Seven stages of diagnosing errors in 2019

Hard disk, or hard drive, is the main device for storing information in system unit. The performance of the computer and the safety of data largely depend on its characteristics.

The following information will help you ask required parameters selecting a cable on your hard drive or optical drive. Each setting hard disk is in use computer system BIOS to tell the system the location of the hard drive and its priority relative to other drives. Most hard drives and computers manufactured after 2002 may not need to change hard drive jumper settings. In particular, this includes SATA drives.

Use this document to check your hard drive jumper settings or physical settings.

Note.

This document contains a procedure that is technical. The person performing the procedure must have significant experience working with hardware and software computer.

Warning.

You can cut yourself on the edges of metal panels. Be careful not to injure yourself on the metal edges of the computer.

Attention!

This product contains components that may be damaged by electrostatic discharge. To reduce the risk of equipment failure due to electrostatic discharge, work on uncarpeted surfaces, on antistatic surfaces (such as conductive foam pads), and wear an antistatic wrist strap connected to a ground.

Jumper, IDE and Ribbon Cable Locations

Jumpers for hard drives and CD/DVD drives are located on the rear of the drive. The jumper is a small metal slider covered with a rectangular plastic element. Hard drive jumpers are designed to move and connect 2 metal contacts to allow electricity to flow between them.

Before using a jumper, you need to know the hard drive setting for each pair of pins.

You can read the pin information directly on the hard drive label, the PCA board underneath the pins, or on the plastic/metal label next to the pins. Some drives use the default setting if there is no jumper. Hard settings disk may be as follows ( this list is not complete):

MS, MA, DS, 0, or M = Main or Device 0. The drive is the first device to be used on the cable/channel (connected to the end connector on the IDE cable).

SL, PK, 1, or S = Secondary or Device 1. The drive is a secondary device for use on a cable/channel (connected to the middle connector of the IDE cable).

CS, CSEL = Cable selection. The drive can be automatically configured by the appropriate system.

If you can't find the names of your hard drive settings for contacts, check the drive manufacturer's information - either on their support website or any available manuals provided upon purchase.

The contacts are usually located at the rear of the drive near the flat cable connector. To configure, the disk must have three or four pairs of contacts.

You also need to know the location and type of each available channel connector on the motherboard. Drives use two main types of connectors:

IDE and SATA. The IDE flat cable connects to the primary or secondary IDE connector on the motherboard. Each IDE cable supports up to two IDE-compatible hard drives.

The SATA cable connects to the SATA connector. Each cable supports one drive. Typically, no jumper adjustment is required.

Finally, the type of cable used can also affect the drive configuration.

For SATA drives all you need is to connect SATA cable to the connector on the motherboard and the drive.

However, for IDE drives Use a flat IDE cable (standard 40-wire or 80-wire Ultra-IDE, or EIDE). A flat cable connects the hard drive or CD/DVD drive to the motherboard. You can connect up to two devices to the same flat cable as long as the cable has three connectors (one connects to the motherboard and the other two connect to the drives).

Now that your hard drive setup, channel connectors, and cable types are clear, you can check your drive jumper settings.

Jumper settings for 1 HDD and 1 CD/DVD drive

Note.

Set the HDD jumper to CS or One. Connect the drive using the main connector on the main IDE cable.

Set the CD/DVD drive jumper to CS. Connect the drive using the primary connector on the secondary IDE cable.

Jumper settings for 2 hard drives and 1 CD/DVD drive

Note.

Set the first hard drive's jumper to Primary (Cable Select can also be used, but the second device will need to be set to Cable Select as well). Connect the drive using the main connector on the main IDE cable.

Set the CD/DVD drive jumper as Cable Select. Connect the drive using the primary connector on the secondary IDE cable.

Jumper settings for 1 HDD and 2 CD/DVD drives

Note.

When using one hard drive Western Digital on a single cable, you may need to set it to Single. More detailed information See your hard drive documentation.

Note.

If Primary (MA) is selected on the first device, then the second device on the same cable must be set as Sub (SL). If Cable Select (CS) is used on the first device, then the second device on that cable must also be set as CS.

Set the HDD jumper to Cable Select or Single. Connect the drive using the main connector on the main IDE cable.

Set the second CD/DVD drive jumper to Auxiliary (use Cable Select if this setting was installed for the first CD/DVD drive). Connect the drive using the Auxiliary connector on the secondary IDE cable.

Jumper settings for 2 HDDs and 2 CD/DVD drives

Note.

If Primary (MA) is selected on the first device, then the second device on the same cable must be set as Sub (SL). If Cable Select (CS) is used on the first device, then the second device on that cable must also be set as CS.

Set the first hard drive's jumper to Primary (Cable Select can also be used, but the second hard drive will need to be set to Cable Select as well). Connect the drive using the main connector on the main IDE cable.

Install jumper second hard drive to Secondary (use Cable Select if this setting was set for the first drive). Connect the drive using the auxiliary connector on the main IDE cable.

Set the CD/DVD drive jumper to Primary (Cable Select can also be used, but the second CD/DVD drive will need to be set to Cable Select as well). Connect the drive using the primary connector on the secondary IDE cable.

Set the second CD/DVD drive's jumper to Auxiliary (use Cable Select if this setting was set for the first CD/DVD drive). Connect the drive using the Auxiliary connector on the secondary IDE cable.

Optical drives and hard drives can operate in one of three modes: "Master", "Slave" and "Cable select". If on the former you only need to move one jumper to select a mode, then on the latter you often need to move two or three. SATA drives also have jumpers, but they are designed for a different purpose.

If the drive is installed in a computer, before moving any jumpers on it, shut down the operating system, turn off the computer's power, remove the cable and power cable from the hard drive, having previously noted their positions, and then remove the drive itself (without this you will not see the sticker located on it).

Check out the images on the sticker. If you have a hard drive with an IDE interface, this sticker usually shows three jumper layouts: for “Master”, “Slave” and “Cable select” modes. Sometimes there is a fourth figure showing how to set jumpers in order to artificially reduce the storage capacity to 32 gigabytes (this may be necessary for working with older motherboards). IN operating system Linux usually does not need to use this mode even when using such boards, since this OS works directly with hard drives.

Find the jumpers themselves on the same side wall as the connectors. You can determine where the top of the field for installing jumpers is based on the landmarks, which are usually also shown in the figure. Such a reference could be, for example, a missing pin.

Move the jumpers themselves using miniature pliers. Sometimes one drive configuration option requires fewer jumpers than another. Therefore, if you have extra jumpers, save them, as you may need to put everything back later.

In very rare cases, the sticker with the illustration on the drive is missing. If you find yourself in this situation, report the drive model to the forum where hard drive repair specialists communicate. Ask them for a diagram of the location of the jumpers on the drive of this model.

When there are two devices on the same cable (it doesn’t matter, hard drives or optical drives), you should either select the “Master” mode on one of them, and “Slave” on the other, or select the “Cable select” mode on both.

Drives with a SATA interface do not have "Master" and "Slave" modes. Their jumpers are intended for other purposes. The most common jumpers are to reduce the data transfer rate from 3 to 1.5 gigabits per second. They are designed to make the hard drive compatible with older motherboards. Sometimes there are jumpers that control the energy saving mode. Their purpose is almost always indicated on the drive sticker.

After changing the jumper positions, place the drive in place with the board facing down, secure it, then connect the cables in the same way as they were connected previously. Turn on the computer and make sure that all drives are functional.

So what is a jumper? Otherwise called a jumper, it short-circuits two contacts. Nowadays, the jumper system is mainly used in motherboards to solve certain problems. For example, a jumper is needed to reset settings. Almost all jumpers look different in shape, but the method of application is the same.

What are jumpers for?
There are ones that use an 80-core cable, it’s called a cable, and you can connect two devices to it. You only need to indicate which device is primary and which is secondary. This is why a jumper exists; there is a special place on hard drives where jumpers are switched. Usually on the disks themselves there is a drawing on how to correctly connect the jumper so that the equipment works as the main one or as an additional one.

Jumpers on SATA hard disks due to the peculiarities of the interface topology do not require additional changes setting the jumper while connecting to the controller. But there are still jumpers on the disks.

The use of jumpers is necessary only in some situations, for example, on a Seagate HDD with a SATA interface, the jumper block has only a technological purpose; no user actions are provided for with them. On a Seagate HDD with a SATA-II interface, one of the jumpers, when in a closed state, limits the operation of the interface to SATA150 (it should be SATA300). The need for this is to ensure backward compatibility with some SATA controllers, these primarily include those built into VIA chipsets.

For HDDs that currently exist, between SATA modes differences in operating speed have virtually no impact on computer performance. If your computer's controller supports this mode, and there is a limiting jumper on the HDD, the only measurable speed characteristic that can decrease slightly, NCQ remains operational.

In addition to the OPT1 jumper, which performs the same function as the Seagate SATA150 jumper, it is possible to enable/disable the SSC function, which may be required for compatibility with many controllers; in most cases, this jumper should be left in the default position.

Jumper PM2 must be used only when it is used to implement sequential startup of the HDD. IN in this case you will need a controller that will support this function.

How does this work.
In many devices, jumpers are used to set the necessary settings on microcontrollers. Basically they are connected in the same way as a button, and they have two states - HIGH and LOW. If there is no jumper, it means that the microcontroller pin is pulled to the positive side of the power supply using a built-in resistor. If the jumper is connected, then the microcontroller pin is shorted to ground.

More different installations, which can be obtained in this case, are equal to two to the power of N. N in this case denotes the number of pins that will be used. There is an easier way to increase the number possible actions, without applying any additional conclusions.
The jumper will now have three states: HIGH, when it connects the microcontroller pin to the power supply positive, the second state, LOW, when it closes the microcontroller pin to ground, and the third state, OPEN, when the jumper is completely turned off. The number of combinations will increase to three to the power of N.

The pin of the AVR microcontroller, which operates in input mode, is pulled up using a built-in resistor, and may be in a high-impedance state.

If the jumpers are in the LOW and HIGH states, then we will get unambiguous results, but if it is in the OPEN position, the voltage level at the microcontroller output can be different, any logical.

What to do in this case? “Plant” the μ output to ground through a resistor.