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Many people think that installing a SCSI hard disk is a big project. Unlike an IDE hard disk, you only need to set the sequence (master or slave. In fact, he is not as complicated as he imagined. After all, the more rigorous the installation and setup, the more stable our use environment is.
Learn about SCSI hard disks:
Each time SCSI releases a new specification, the SCSI hard drive supports the new specification, making the SCSI hard drive a leader in SCSI peripherals. As the hard disk development technology is quite mature, the combination of SCSI hard disks on interfaces always keeps up with the times. Furthermore, hard disks are very important devices for computers and are indispensable. In fact, all hard disks are similar, but because of the different SCSI specifications, there are still some differences in the appearance of some of them.
Hard disks of different SCSI specifications:
The 68-pins wide SCSI pin can be used to transmit data using a 16-bit channel width.
The 60-pins narrow SCSI pin can only transmit data in 8-bit channel width.
Jimper (jumper) settings are mainly used to adjust the hard disk ID and terminal resistance switch.
SCSI hard disks are very expensive computer peripheral devices. Please be very careful when carrying them. Because the current SCSI hard drive speed is quite high (about rpm ~ 10,000 rpm). Therefore, whether you install the hard disk in external or built-in mode, you must have a good heat dissipation environment.
Install the hard disk in the built-in mode:
Most of the hard disks bought from the market are built-in hard disks. Only some manufacturers sell the advanced SCSI hard disks with external boxes, so they become ready-made external hard disks. If you feel that your computer chassis has good thermal dissipation and free space, you can leave the money for the external box and directly connect the SCSI hard disk to the computer chassis.
Necessary tools for installation:
To install the hard disk in the chassis, you must prepare the following tools:
1. Cross taper: hard disks and SCSI interface cards must be fixed on the chassis with screws. In this case, cross taper must be used to complete these tasks.
2. Tip pliers: you must use the tip pliers to remove and insert jumper on the hard disk to set the hard disk ID and terminal resistance switch.
Prepare all kits:
When installing a SCSI hard disk in a built-in mode, prepare the following accessories:
1. SCSI hard drive: this is of course an indispensable role.
2. SCSI interface card: unless your motherboard has a built-in SCSI interface, you must prepare a SCSI interface card. In addition, the combination of the SCSI interface card and the hard disk is also very important, use it with the SCSI specification of the hard disk. If you use the fast SCSI interface card to match the ultra-wide SCSI hard disk, although there is no problem in use (you can use the conversion header), the speed and channel width will reduce the standard of long fast SCSI.
3. scsi cables: SCSI built-in cables are divided into 50-pin single-ended, 68-pin single-ended, and 68-pin LVD, identify which sort line must be used for your SCSI hard disk.
4. Screws: used to fix hard disks and SCSI interface cards. The two may have different specifications!
Before installing a SCSI hard disk, take a look at the entire process:
Hard Disk jumper settings → Fixed Interface Card and hard disk → connect hard disk and interface card with a line → connect hard disk Power Supply
Next we can start to install the SCSI hard disk on the chassis!
1. Adjust the SCSI Jumper: jumper on the hard disk can be used to set the scsi id, terminal resistor, and parity check.
2. Insert the SCSI interface card into the motherboard: insert the SCSI interface card into the correct slot on the motherboard, and confirm whether the card is correctly inserted. Then use the cross Taper and screws to fix the interface card.
3. Fixed hard disk: the hard disk is fixed on the chassis holder.
4. Connect to the cables: Use the cables to connect the SCSI interface card to the hard disk. The 68-pins wide SCSI is a special trapezoid connector. Therefore, there is no backend connection problem.
If you are installing a narrow (50-pin) hard disk, note that the red line of the 50-pin line must be aligned with the pin-1 of the hard disk or interface card.
5. Insert the mounting unit into the chassis and connect it to the power supply: Determine whether the hard disk in the mounting unit has been installed, and then plug in the power cord of the hard disk.
So far, there has been no problem with hardware installation. Please check whether the SCSI interface card, cable layout, and power cord are correctly connected again. If everything is correct, you can turn on the host power, check whether the scsi bios shows that the SCSI hard disk model can be found. After the scsi bios is started, a picture is displayed. If the SCSI hard disk is found, the hardware is correctly installed!
External hard drive:
External SCSI hard drive has many advantages, such:
1. If you do not need a hard disk, you can turn off the power to reduce unnecessary work on the hard disk.
2. Easy to disassemble and install. You do not need to open the host chassis.
3. The ID can be switched directly on the chassis without the need to plug or remove jumper from the hard disk.
4. The external box can be equipped with an independent and complete three-hot system, so that the hard disk has a better heat dissipation working environment.
Generally, the external interface of the SCSI hard disk enclosure is either a low-density 50-pin or a high-density 50-pin SCSI connector. The external interface is connected to the hard disk with a 50-pin internal connection. As for the ultra wide SCSI hard drive, the dedicated enclosure is rare, and its external interface is the 68-pinwide connector. Internally, it is connected to the hard disk with a trapezoid 68-pin wide SCSI internal connection. At present, the latest ultra2 wide scsi lvd hard drive, due to the high requirements for connection cabling, coupled with the special twisted pair design, so no matter in the external box or SCSI wiring must be re-designed, currently, no products in this area are available.
Install two or more SCSI hard disks:
If you have more than two SCSI hard disks, you can use the following arrangement and combination for installation:
1. Hard Disks are built into the same SCSI interface card: Generally, the built-in cables attached to the SCSI interface card can only be connected to 1 ~ Two devices. If you need multiple built-in hard disks, you may need to purchase another cable. In addition, some ultra2 scsi lvd interfaces not only provide built-in ultra2 lvd scsi and ultra-wide SCSI, but also enable these two types of SCSI devices, there is no mutual restraint or influence in the same SCSI channel.
2. connect two scsicards to multiple hard disks: This is a luxury because you need to purchase another SCSI interface card. However, as a result, there is no need to worry about the number of connections and the length of SCSI.
3. Use both external and built-in Methods: Both built-in and external SCSI hard disks are used to connect multiple hard disks, however, pay attention to whether the total length of the built-in cables plus the external cables exceeds the limit. In addition, the last external mode and the last built-in hard disk must enable the terminal resistance.
We recommend that you use a built-in method when installing an advanced SCSI hard disk, such as ultra-wide SCSI or ultra2 SCSI. Therefore, these hard disks require bandwidth and low noise, if the built-in method is used, the desired performance can be achieved.
After the preceding installation instructions, I believe that you have installed your SCSI hard disk. At this time, you can't wait to use this hard disk. Don't worry, because there are still some necessaryProgramYou need to do it! Here we will show you how to use the SCSI hard disk to start.
Before starting the SCSI hard disk, please preview the entire process:
Turn off the IDE Hard Disk in system BIOS → scsi bios's scsi id settings → soft drive startup → hard drive partition and hard drive startup settings → advanced formatting → install the operating system → set the startup sequence of system bios and enable it again IDE hard disk.
Turn off the IDE Hard Drive:
If your computer is equipped with an IDE hard drive with "Boot", turn them off from the system BIOS first.
1. Press the delete key when starting the instance.
2. Enter the system BIOS screen, move the cursor with the arrow key, select stand COMS setup, and press Enter.
3. Use the page up and page down keys to set these IDE hard disks to none.
Scsi bios settings
Then confirm the scsi id of the SCSI hard disk to be started, so that we can go to the scsi id and set the scsi id of the boot device.
After restarting, when the following screen appears (in the case of adaptec AHA-2940U/UW), immediately press Ctrl +:
1. When the scsi bios screen appears, press Ctrl +.
2. Enter the scsi bios menu, move the cursor with the arrow key, select SCSI disk utilities, and press Enter.
3. Select boot device options and press Enter.
4. Select the boot target ID and press Enter.
5. Select the ID of your boot hard disk from the scsi id menu, and press Enter. During this operation, check whether the ID of the SCSI hard disk is the ID set here.
6. Go back to the previous menu and confirm that the boot target ID has been set to the selected hard disk ID. Press ESC.
7. Confirm whether you want to store the settings. Select Yes and press Enter.
8. Press ESC to exit the screen.
9. Press ESC on the first screen and select YES to exit the scsi bios utility.
If a SCSI device is started, the system uses the first SCSI device as the boot disk. Therefore, the function of setting the SCSI Boot ID is to let the system identify the hard disk of this ID as the first SCSI device.
Startup settings for other SCSI devices:
In addition to the SCSI hard disk can be used as a boot device, other such as Mo, removable hard disk, zip, CD-ROM, etc., can also be used as a boot device Oh! Mo, removable hard drive, and zip are removable disks devices. In addition to setting them as startup IDs, you also need to make the following settings:
1. Go to the scsi bios main menu, select Configure/view host adapter settings, and press Enter.
2. select Advanced Configuration Options and press Enter.
3. Select support removable disks under BIOS as fixed disks and press enter to change this item to all disks or boot disk only.
4. Set BIOS support for int13 extensions to enabled to support SCSI CD-ROM startup.
After completing the settings, you can use any removable disk as the boot disk! If the scsi bios displays "scsi bios installed successfully!" on the screen! ", It means you do not need to install any driver, you can see this hard disk in the operation. If "scsi bios not installed" is displayed, it indicates that the scsi bios is not managed to the SCSI hard disk. Set include in BIOS scan to yes and set BIOS support for int13 extension to enable.
Boot hard disk settings:
After completing the BIOS settings, we will start to perform various operations on the hard disk. First, prepare a 3.5-inch boot disk (preferably a Windows 98 boot disk), which must contain two files: fdisk. EXE and format. EXE. Before starting with a floppy disk, check whether the boot sequence in system BIOS is "A, C, SCSI ".
Hard Disk Partition:
1. Place the disk in the host and restart it.
2. Run fdisk. EXE under a: "After startup.
3. enable large disk support indicates that FAT 32 is supported and a partition can be larger than 2 GB. Enter y and press enter to continue.
4. Select create DOS partition or logical dos drive to create a partition and press Enter.
5. Select create primary DOS partition to create a DOS partition. If you want to divide all the hard disk space into one primary partition, enter "Y". If you want to divide it into more than two partitions, enter "N ". When this information is displayed, the hard disk has been partitioned.
6. Press ESC to exit fdisk. Run fidsk again and select set active patition to specify the start partition.
If you have installed an IDE hard disk and didn't set the IDE hard disk to none in system BIOS at the beginning, you cannot specify the partition as aactive. After you leave the fidsk program, restart it so that the partition hard disk settings will take effect.
Advanced formatting hard drive:
After the hard disk partition is complete, restart the disk. In A: "enter" format C:/s "and press enter to start the advanced formatting of disk C. "/S" indicates that after formatting, the boot system file is copied to drive C, allowing the hard disk to be started directly. After advanced formatting is completed, enter the hard disk name or press enter to return to DOS mode.
The formatting we refer to generally refers to "Advanced formatting". Therefore, the hard disk has already done "low-level formatting" at the factory, so there is no need to perform a low-level formatting. However, a low-level formatting program is included in the SCSI bios. You can directly perform a low-level formatting operation on the SCSI hard disk.
After formatting, your SCSI hard disk can be started and stored directly. Please exit the boot disk and restart it. Previously, you have removed the Enable IDE hard drive from the system bios, so after the SCSI hard drive is repartitioned and formatted, remember to restart the IDE Hard Disk in system BIOS.
Install the operating system:
If you want to install Windows 98 on a SCSI hard disk, it is best to use Windows 98 boot disk to start, because Windows 98 boot disk has a CD-ROM driver, there is also enough general memory for the installer to execute. Enter the "setup" command at the DOS prompt of Windows 98 to start installation. Then, you can directly install Windows 98 to the formatted SCSI hard disk.
System BIOS settings
To make the SCSI hard disk a boot disk, you need to work hard on the system bios of the motherboard. When the startup screen appears, press the delete key:
1. Press the delete key on the boot screen.
2. move the cursor with the arrow key, select BIOS features setup, and press Enter. Enter the system BIOS screen.
3. Select boot sequence and use the page up and page down keys to adjust the startup sequence. Press ESC to exit the screen.
Select Save-exit setup on the system BIOS main screen, and press enter to save the settings and restart. After restarting, if you have installed the Windows 98 operating system on the SCSI hard disk, You can smoothly switch from the SCSI hard disk to Windows 98!
In the early days, the system bios of the Main Board did not adjust the SCSI Boot priority. If both the SCSI and IDE Hard Disks are installed, the IDE hard disk has the absolute boot priority. Therefore, it can only be started with IDE. If you want to start it with a SCSI peripheral device, you cannot install the IDE hard disk or set the IDE hard disk to none in the system BIOS. After restarting, you can start it with SCSI! But in this way, your computer cannot use both SCSI and IDE hard disks.
Multiple startup settings for the SCSI hard disk:
If you have installed more than two hard disks, you can install different operating systems on different hard disks, or you can choose to start them on one of the hard disks! For example, if there are two SCSI hard disks, one is to install Windows 98, and the other is to install OS/2. Before installation, remind you to set SCSI to boot first in system bios and cancel the IDE Hard Disk:
1. Install Windows 98: Set the hard disk to be installed as the boot disk (making Windows 98 the first hard disk) in the SCSI bios. Start the disk with a floppy disk. Use the fdisk program to enter the hard disk partition, set the hard disk to active. After advanced formatting, install Windows 98.
2. Install OS/2: In the SCSI bios, set the hard disk to be installed OS/2 as the boot disk (to make the OS/2 hard disk the first hard disk ); use the OS/2 dedicated boot disk for hard disk partitioning, formatting, and installation. Remember to set the hard disk to active in the OS/2 Hard Disk partitioning program ).
If you have installed an IDE hard disk, after installing the two hard disk operating systems, please remember to turn the IDE hard disk back on in the system BIOS.
To enable each hard disk to start, you must set the hard disk to active. However, when you set the active State using the fdisk program, you can only set the first hard disk named acitve. Therefore, you must set the active state of the hard disk, you must set this hard disk as the first hard disk. Why must I cancel the IDE hard disk when setting active? Because when the boot disk is used to boot, even if the sequence of "SCSI, A, C" is set in the system bios, the Enable IDE hard disk will remain the first hard disk. Therefore, we must cancel the IDE Hard Disk in system BIOS to make the SCSI hard disk the first hard disk.
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