~~VERE Everdisk rM internal/external hard disk subsystem (XT compatible) OWNER'S MANUAL AND REFERENCE GUIDE (VERSION 2.
Everdisk™ internal/external hard disk subsystem (XT compatible) OWNER'S MANUAL AND REFERENCE GUIDE EV-390 EV-391 EV-392 (VERSION 2.0) EVEREX SYSTEMS, INC.
Notice Everex Systems, Inc. reserves the right to make improvements in the product described in this manual at any time and without notice. DISCLAIMER: While we do our best to avoid such a situation, Everex Systems will not be responsible for loss of data resulting from the use of this product. This manual is copyrighted. All rights are reserved.
Everex, EVER for EXcellence, and trademarks of Everex Systems, Inc. EVERDISK are The IBM PC, XT, AT, Portable and PC-DOS are trademarks of International Business Machines Corporation. MS-DOS is a trademark of Microsoft Corporation. Compaq and Deskpro are trademarks of Compaq Computer Corporation. Micropolis, 1333A and 1335 are trademarks of Micropolis Corporation. ,-., Miniscribe 3650 is a trademark of Miniscribe Corporation. NEC 5146 is a trademark of NEC Home Electronics (USA), Incorporated.
Warning Class B: Computing Device WARNING: This equipment generates and uses radio frequency energy and if not installed and used in strict accordance with the manufacturer's instructions, it may cause interference to radio and television reception.
Table oj Contents 1"""'\ CHECKLIST .•..._ ......................................._ .......................__..............._ 1 USER PRECAUTIONS............................................................................... 4 SECTION 1: INTRODUCTION .............................................................. 1.1 Before You Begin ............................................................................................... 1.2 System Requirements......................................................
SECTION 6: FORMATTING THE HARD DISK........................ 6.1 For Older IBM PC Models ............................._...................................... 6.2 Physical Formatting.................................._................._............._._.......... 6.3 Disk Partitioning........................................................................_...................... 6.3.1 Creating Primary DOS Partition........_........._................. 6.3.2 Creating Extended DOS Partition.........................
Check List Your EVERDISK hard disk subsystem should contain the following items: Internal Subsystel7' Hard disk controller board in an anti-static bag Hard disk drive in an anti-static bag 34-pin ribbon cable 20-pin ribbon cable Half-height bezel (full-height bezel optional) Metal mounting brackets Set of screws EVERDISK utility diskette (Version 3.
External Subsystem Hard disk controller with external mounting bracket in an anti-static bag connector on Hard disk drive in an external subchassis 37-pin shielded connecting cable AC power cord (power external subchassis ONLY) EVERDISK utility diskette (Version 3.
If any of the items previously listed are missing or are damaged, please consult your Everex dealer immediately. NOTE: Please save all Everex packaging materials that came with your EVER DISK subsystem; if you ever need to return your EVER DISK subsystem to Everex Systems for any reason without proper packaging, your warranty may be affected. As with any major purchase, please save your sales invoice.
User Precautions To avoid possible hazardous situations and to prevent damaging your EVERDISK subsystem, please read the following precautions carefully. 1. Turn OFF your system and disconnect the power cable before you begin the installation. Make sure NO power goes to your system! 2. Clear an area around your computer to make working on your computer easier. 3.
Section 1: Introduction .---., 1.1 Before You Begin Before installing your EVERDISK hard disk subsystem, please read through this manual carefully. This manual gives you all the information needed to install the EVERDISK hard disk subsystem in your computer. If you have any questions not answered by this manual, please see your local Everex dealer. REMEMBER: "If all else fails, read the instructions.
1.2 System Requirements IBM PC, XT or compatible Minimum 128KB of RAM memory DOS 2.1 or later DOS version Higher-capacity power supply (only for PC and PC compatibles with a system power supply of less than 135 watts output).
Compaq Deskpro Compaq DOS 2.11 or IBM PC-DOS (Version 2.1 or later) Compaq Deskpro mounting rails Deskpro power cable "Y" power cable (optional) Other PC Compatibles MS-DOS Version 2.
Section 2: Getting Started The following Quick Installation subsections are for experienced PC/XT users. First-time users should follow the more comprehensive instructions in Sections 3 through 5 of this manual. 2.1 Quick Installation (Internal Drive) 1. Configure the drive as drive 1 or drive 2, and check if you need to disable the drive's terminating resistor. 2. Configure the SWl jumper block for the type of drive you will connect to the controller. 3.
2.2 Quick Installation (External Drive) 1. Configure the SWl jumper on the controller board for the type of drive you have. 2. Install the controller board in your system. 3. If applicable, connect a 4-wire cable from the power supply to the controller. 4. Connect the 37-pin cable to the 37-pin connectors on the controller board's mounting bracket and the external hard disk subchassis. 5.
Section 3: Drive Configuration Before you can install the hard disk drive into your PC or XT, you must properly configure the following two areas of the hard disk: 1. Configure the drive select switch as drive #1 if it is your first drive, or drive #2 if it is your second drive. 2. Make sure your drive's terminating resistor is selected properly. 3.1 The Drive Select Switch Before you install the hard disk drive, make sure the drive select switch is configured properly.
SEAGATE 21.4MB ST225, 31.5MB ST238, 42.8MB ST251, 42.5MB ST4051 and 80MB ST4096 Drives. The drive select switch CDS) is the 16-pin jumper block located between the cable connectors. Put a jumper on DS1 (Drive Select 1) if the drive is the first drive in your system or DS2 if the drive is the second drive in your system. Refer to the following figure. Please note the location of the terminating resistor in this figure also.
SEAGATE 21.4MB ST4026 and 31.9MB ST4038 Drives: The drive select switch is the 8-pin jumper J9 (refer to Figure 1B). For physical drive 1, put the jumper on DS1; for physical drive 2, put the jumper on DS2. Please note the location of the terminating resistor also. RESISTOR TERMINATION PACK J9 os.
~ NEe 42MB 5146. The drive select switch is a 4-position dipswitch called SW2 located on the circuit side of the drive. Select drive address 1 if the 5146 is the first drive in your computer; select drive address 2 if the 5146 is the second drive in your computer. Refer to the following figure. In this figure, note the location of the SWI terminating resistor dipswitch.
MICROPOLIS 44.5MB 1333A and 71.3MB 1335: The drive select jumper (DS) is the 12-pin jumper block located between the cable connectors. Do not remove the jumpers from WI and W2 positions. For physical drive 1, put jumper on position DSl; for physical drive 2, put jumper on position DS2. Please note the position of the terminating resistor also. o D J2 PIN 1 o COMPONENT SIDE J1 o DS4 (ADDRESS 4) INTERFACE TERMINA TOR RN1 •• DS3 (ADDRESS 3) •• DS2 (ADDRESS 2) E.
MINISCRIBE 42.2MB 3650: The drive select jumper is a 14-pin jumper block located on the left rear of the drive as you face the rear of the drive. For physical drive 1, place the jumper on DSO, for physical drive 2, place the jumper on DSl. Please note the position of the terminating resistor also.
3.2 The Terminating Resistor Since hard disks can be connected to the controller in a daisy-chain fashion, the drives have a resistor called a terminating resistor. The resistor can either be removed (Seagate, Micropolis and Miniscribe drives) or disabled (NEe 5146) so you can turn the terminator on and off, depending on the configuration of your computer. To locate the terminating resistor of your drive, refer to Figures 1A through 1E.
DRIVE 1 CONTROLLER DRIVE SELECTION=1 TERMINATOR INSTALLED TERMINATED Figure 2A: One Drive Configuration CONTROLLER TERMINATED I I I L DRIVE 1 DRIVE 2 DRIVE SELECTION~1 TERMINATOR REMOVED DRIVE SELECTION~2 TERMINATOR INSTALLED Figure 2B: Two Drive Configuration 17
Disabling the Terminating Resistor {NEe 5146}: The 8-pin dipswitch SWI pointed out lfi Figure Ie determines if the terminating resistor is on or off. Whether the terminating resistor is on or off depends on how it IS cabled to the controller. Refer to the following examples: Example 1: 5146 is the only drive connected to daisy-chain cable Switch positions 2 to 8 ON; position 1 should be OFF.
Section 4: Controller Configuration The positIOn of the jumper shunts at location SWI of the hard disk controller (model number EV-390 or EV-391) determines the physical characteristics of the drive(s) attached to the controller. These physical characteristics include very important drive specifications, such as the capacity (in megabytes), and how many heads and cylinders the drives have. You need to place the jumper shunt on the pins at SWI according to the type of drive(s) you are installing.
4.1 Controller Description The EVERDISK subsystem comes mostly with the EV-391 controller board. The board is two-third sized, and is NOT AT-compatible. The EV-391 controller uses MFM encoding, which records 17 sectors per track on a hard disk compatible with the ST506 specification. The EV-391 can operate two drives, even if the drives have a different number of heads and cylinders.
4.2 Controller Configuration To set the EV-390/391/392 controller card for each drive, you must move jumper positions 1-4 on SW1. Jumper positions 1 and 2 control Drive 2 (your second drive) and Jumper positions 3 and 4 control Drive 1 (your first drive). The EPROM chip on the EV-390/391 controller (see Figure 3 and 4 for the location of the EPROM chip on the controllers) comes in several versions (labeled 3.92A, 3.93, 3.94, 3.95, 3.96 and 3.97) that support specific drive types.
c:::::J c:::::=:J J3 J2 B ~~ B B0 J1 SW1 J4 OPTIONAL EXTERNAL CONNECTOR Figure 3: The EV-391 Hard Disk Controller Drive 1 Drive 2 22 C Option D A B Option Option 5 •• 5 •• 6 •• 5 •• 5 •• 6 •• 6 •• 6 • • 7 •• 7 •• 7 •• 7 •• 8 •• 8 •• 8 •• 8 •• 4 • • 4 •• 4~ 3 •• 3~ 3 •• 4~ 3~ 2 •• 2 •• 2 •• 2· • 1 • • 1 • • 1 • • 1 • • SWl SWl SWl SWl 5 •• 5 •• 5 •• 5 •• 6 •• 6 •• 6 •• 6 •• 7 •• 7 •• 7 •• 7 •• 8 •• 8 •• 8 •• 4 • • 4 •• 4 •• 3 •• 3 •• 3 •
J6 DRIVE A & B c::=:::J [===:J J3 =======:::J CI J2 Jl / J5 wloD U23 OPTIONAL EXTERNAL CONNECTOR Figure 4: The EV-390 Hard Disk/Floppy Disk Controller Option B Option C Option 5 •• 5 •• 5 •• 5 •• 6 •• 6 •• 6 •• 6 •• 7 •• A Drive 1 Drive 2 7 •• 7 •• 7 •• 8 •• 8 •• 8 •• 4 • • 4 •• 3 •• 2 •• 3l:!::!] 2 •• 4l:!::!] 3 •• 1 • • D Option 8 •• 4~ 2 •• 3l!::!] 2 •• 1 • • 1 •• 1 • • SWI SWI SWI SWI 5 • • 5 •• 5 •• 5 •• 6 • • 6 •• 6 •• 6 •• 7 •• 7 •• 7 •• 7 •
J3 J2 L J1 ___---' r£:!l!] W8 W4 W3 W9[;j l!::!1!I J4 [!:!] W6~ J1J2J3J4- 34 20 20 37 PIN PIN PIN PIN CONNECTOR CONNECTOR CONNECTOR FEMALE BRACKET CONNECTOR Figure 5: The EV-392 Hard Disk Controller Option A Drive 1 Drive 2 : : : : : :[;][;] 56781234 B c : : : : : : : [;J • • • • • 1-1. • 5 5 678 • 6• •7 •8 •1 l!J. • 234 • • • • 1-1. • • • • • • •• • • • • • • • •2 3 • 4• 5 6 5678 24 234 • • • • • • fil· I.!.I • 5678 D • • • • 1-11-1. • • 6• •7 8• 1 1.!Jl!J.
~ 42.2 42 10.7 21.4 42.8 21.4 31.9 42.5 80.2 10 44.5 71.3 MB 5 8 4 6 8 2 4 6 4 5 5 9 Heads 1024 1024 306 809 615 615 615 820 615 733 977 1024 Cyl NS NS A NS NS B e NS e NS D NS B e NS e D • D NS 3.93 NS NS A NS NS 3.92A B NS e D e NS NS A B NS NS NS NS 3.95 NS e D e NS NS NS NS NS A NS EPROM 3.94 TABLEIA ROM BIOS Disk Type Selections (EV-390/391) ) NS NS NS NS e NS e D NS NS B A 3.96 e NS e D • D NS B NS NS NS A NS 3.97 ) The EPROM chip will not support this drive.
TABLEIB ROM BIOS Disk Type Selections (EV-392) Manufacturer Model MB Cyl Heads Tandon Vertex Priam Miniscribc Microscicncc Seagate TM755 V150 V170 3425 HH725 ST238 65 65 92 31 31 32 981 981 987 612 612 615 5 5 7 4 4 4 Option A A B C C D NOTE: The drives listed in Table 1B are all qualified for RLL (2,7) encoding; all hard disk drives attached to the EV-392 controller MUST be RLL (2,7) qualified.
Section 5: Physical Installation Because of the large number of procedures needed to install a hard disk drive in your system, we strongly urge you to read through this section thoroughly before you install the drive. This section contains information on how to install internal and external drives. NOTE: Since the EVERDISK subsystem requires extensive amounts of work inside the system unit during the physical installation process, we suggest having a reputable dealer do the installation for you.
3. Remove the system cover (see Appendix 1 on how to remove the system cover). 4. Remove the hard disk controller from the anti-static bag; then make sure the controller is configured for the drive you have (see Section 4.2 for instructions on configuring the controller). 5. Locate an available expansion slot cover nearest the floppy disk controller and remove the screw that holds the expansion slot cover in place; lift the slot cover off.
1"""'\ 6. Attach the 34-pin cable to the J1 connector and the 20 pin cable to the J2 connector. Make sure you align the colored stripe on the cables to the silkscreened "1" on the controller. COMPONENT SIDE Figure 7: Attaching the Cables to the Controller 7. Insert the controller into the available expansion slot, making sure the gold edge connectors are fully seated into the expansion slot.
5.2 Internal Drive Installation 5.2.1 One Internal Drive 1. Remove the hard disk controller from the anti-static bag and confirm the controller is configured for the drive you have. See Section 4.2 for controller configuration instructions. 2. Turn OFF the system and remove all power cables from the system. Clear an area around your computer to leave plenty of room to work. 3. Install the controller according to the instructions Section 5.1. 4.
Figure 9: Attaching the Mounting Bars 6. Insert the drive partially into the drive space with the metal cover face up. Connect the cables from the controller to the drive according to Figure 10. The colored stripe on the cables should be on the left side as you face the front of the drive.
7. Connect the 4-pin power cable from a power source (either the computer's power supply or an additional power supply) to the drive. 8. Slide the drive completely into the drive space, and connect the provided pan head screws to secure the disk drive mounting bar to the system chassis (see Figure 10). DO NOT over-tighten the screws or use long screws; doing so may damage the drive. 9.
"........., 12. When the drive is formatted and working properly, turn OFF the system and reinstall the system cover.
5.2.2 Two Internal Drives If you plan to have two internal drives attached the controller, use the following additional instructions: 1. Make sure the controller is configured for the installation of two drives. Refer to Section 4.2 for instructions on how to configure the controller. 2. Make sure the drive select switch and terminating resistor on each internal drive are adjusted according to instructions in Section 3.1 and 3.2. 3.
r-., 5. Connect the 20-pin and 34-pin cables to the hard disk drives. The cable attached to 12 connects to drive 1, and the cable attached to 13 connects to drive 2. Make sure the colored stripe on the cables connect is on the left side as you face the front of the system. The end connector of the daisy-chain cable should be connected to drive 2; the middle connector should be connected to drive 1. Refer to the following figure.
6. Connect the power cables to the drives; use a "Y" power cable if necessary. 7. Reinstall all cables and turn the computer ON. 8. Follow the instructions in Section 6 to format the two hard disk drives. Note that your second drive is normally addressed as the "D" drive. 9. When the drives are tested and working, turn OFF the system and reinstall the system cover. 36 ".....
~ 5.3 External Drive Installation 5.3.1 Installing One External Drive 1. Follow the instructions for installing the controller board in Section 5.1. 2. Plug one end of the shielded round cable to the external connector on the controller, and the other end to the external connector on the hard disk subchassis. Figure 12: Connecting the Controller to Subchassis 3. Plug the power cable to the subchassis FIRST, then plug in the power cable to the wall outlet.
" PLUG THIS END IN FIRST Figure 13: Connecting the Power Cord to Subchassis 4. Turn the chassis ON first; then turn the computer ON with the DOS system diskette in drive A. 5. Format the drive by following the instructions Section 6 of this manual. 6. Once the drive is formatted and working properly, turn OFF the system and replace the system cover.
A Note About Unpowered External Subchassis: There are some external hard disk subchassis that do not have a built-in power supply. In this case, the power comes from the system through the hard disk controller. For such subchassis, plug in a 4-wire power cable from the power supply to the J5 connector on the controller board; if there are no spare power cables available, disconnect a 4-wire cable from your currently installed floppy drive and connect a "Y" power cable.
5.3.2 Installing Two External Drives The procedures for installing two external drives are similar to installing one external drive; however, the two external drives are two half-height drives encased in a full-height subchassis with its own power supply. Before you install the two-drive subchassis, make sure you configure the hard disk controller board so two drives are usable by the controller (see Section 4). Then use the instructions in Section 5.3.1 to connect your two-drive subchassis to your system.
Section 6: Formatting the Hard Disk r-,> Unlike floppy diskettes, formatting a hard disk drive is a three-step process: physical formatting, drive partitioning, and logical formatting. Physical formatting arranges the information on the disk media and marks the bad sectors on the hard disk. Disk partitioning defines a disk space where information can be stored. Logical formatting prepares the partition with information so that DOS can read and write data to and from that partition.
6.1 For Older IBM PC Models Some early models of the IBM PC (the PC 1) do not contain the ROM BIOS codes which allow you to boot DOS directly from the hard disk. For these systems, a software patch is necessary for the PC to recognize the hard disk drive. Everex Systems provides you with such a software patch. This patch is called EVEREXl.EXE and is located on the EVERDISK software diskette that accompanies your hard disk subsystem.
,-...., 3. Press [Ctrl]-[Alt]-[Del] to reboot the system; this will run the EVEREXl.EXE file. NOTE: The DOS system diskette with this AUTOEXEC.BAT file must be run each time the system is booted for the computer to access the hard disk drive. 6.2 Physical Formatting 1. Boot up the system with the DOS system diskette in drive A. Then replace it with the EVERDISK utility diskette and type: DISK [Enter] 2.
number 5 (default factor for pes and XTs); enter "Y" in the Do disk media test after format (YIN) field if you need to test the drive to find any bad tracks not listed by the drive manufacturer. 4. Press [F2] to enter the Bad Track window field; using the list provided by the drive manufacturer, enter the entire bad track list in this field.
~ 6.3.1 Creating Primary DOS Partition: 1. From the DISK Main Menu, press the [F3] key, Partition Disk. 2. Press the [F3] key, Create DOS Partition. 3. This initial partition on the disk must contain the DOS system files so it can self-boot; press the [F3] key, Create Primary DOS Partition. 4.
5. Use the up and down cursor keys to move between the Enter number of cylinders in partition and Enter starting cylinder of partition fields. Enter the values you want, and press the [F8] key to create the partition. 6. The new partition will appear in the Partitions menu. Now that a DOS partition exists on your drive, press [F9] to return to the Partitioning Main Menu, then press [F4], Activate partition, to make the partition bootable from DOS.
1. From the Partitioning Main Menu, press [F3], Create DOS Partition, then press [F4], Create Extended DOS Partition. 2. You will then see these window fields: Maximum number of available cylinders Maximum cylinders allowed in partition Enter number of cylinders in partition Enter starting cylinder of partition aaa bbb ccc ddd 3. Use the up and down cursor keys to move between the Enter number of cylinders in partition and Enter starting cylinder of partition fields.
ggg hhh value will equal the eee value; if the Extended DOS partition is larger than 32 megabytes in size, the m value will be equivalent to a Logical drive that is 32 megabytes in capacity. represents the number of cylinders you want in the Logical drive. represents the starting cylinder of the Logical drive in the Extended DOS partition. 5. Enter the ggg and hhh values, and press the [FS] key to create the logical drive. 6.
,,-...., ,.-.., DOS limit, with a maximum limit of 285 megabytes per Super DOS partition. The software allows the definition of three Super DOS partitions in addition to the Primary DOS partition; this means you format a physical drive with a formatted capacity of 887 megabytes! Use the following instructions to create a Super DOS partition. 1. From the Partitioning program Main Menu, press [F3], Create DOS Partition, then press [F5], Create Super DOS Partition. 2.
6.3.4 Deleting Partitions If you need to delete a partition, use the following instructions: 1. Choose the physical drive that contains the partition you want to delete. The software defaults to physical drive 1; press the [F6] key to select physical drive 2. 2. To select the partition you want to delete, press the [F2] key to move the cursor to the Partitions menu field, use the up and down cursor keys to select the partitions you want deleted, and press the [F2] key again to confirm your selection.
1. From the DISK Main Menu, press the [F4] key, Logical Format. 2. The program will ask for which physical disk to format, whether to copy the DOS system files to ;he disk, and an optional disk label. The software automatically defaults to physical drive 1; select 2 to logically format the partitions in physical drive 2. If you are formatting the Primary DOS partition, enter Y to copy the DOS system files; otherwise enter N.
6. If your drive has additional partitions, you must format each partition separately; to choose a partition to format, press the [F2] key to move the cursor into the Partitions menu field, use the cursor keys to select the partition, and press the [F2] key again to confirm your selection. 7. Once you finish logically formatting each partition, press the [FlO] key to leave the program; a message will prompt you to press a key to reboot the system.
copy con: config.sys device=evdisk.sys [F6] d. [Enter] [Enter] [Enter] Reboot your system; the computer should now recognize the extra logical drives on your physical disk. If the additional DOS-usable partitions are all NOTE: Extended DOS partitions and you are using PC-DOS 3.3, you can skip step #7 since the partitions are directly supported by this version of DOS. 6.5 Utilities 6.5.
drive to test, whether to do a continuous drive test, and the duty cycle percentage value (100 percent means testing the drive at maximum performance capabilities); and the group on the lower right displays the test status. 4. Move the cursor with the cursor keys to the upper right group; select the physical drive you want to test, select whether or not to do a continuous test, and select the duty cycle.
TABLE 2 DISK Diagnostic Test Descriptions Test Name Sequential Write Sequential Read Sequential Write-Read Description Checks to make sure the drive can write data to disk in sequential order from cylinder 0, head 0 to end of drive. Checks to make sure the drive can read data from disk in sequential order from cylinder 0, head 0 to end of drive. Checks to make sure the drive can write and read in sequential order from cylinder 0, head 0 to end of drive.
Controller Checks to make sure basic operation of drive and controller are working properly. Seek Checks to make sure the read/write head assembly works properly. Drive Ready Checks to make sure the drive is ready to accept and execute commands. All Tests Runs all the tests listed above.
6.5.2 SHIPDISK.EXE Whenever you need to move your system and/or hard disk, you should move ("park") the read/write head on the hard disk at an area always void of data (the so-called landing zone). This is analogous to securing the tone arm of a stereo turntable. To park the read/write head, use the SHIPDISK.EXE program on the EVERDISK utility diskette. To Park the Read/Write Heads: 1--..., 1. Insert the EVERDISK utility diskette in drive A. 2. Type: SHIPDISK r"'\ [Enter] 3.
Appendix 1: Removing System Cover It is a straightforward process to remove the system cover. First, remove the holding screws from the edges of the back panel of the system unit (save the screws). With the front of the unit facing you, carefully pull the cover towards you until it stops. Tilt the cover up slightly, and lift it off gently.
Appendix 2: Installing One External & One Internal Drive If you have one internal and one external drive, you must configure the external drive as drive 1 and the internal drive as drive 2. Installation Instructions 1. Turn the system OFF. 2. Change the drive select switch so your internal drive is configured as drive 2 (the external drive is already configured as drive 1). NOTE: You do not need to remove the terminating resistor from your internal drive. 3.
WARNING: DO NOT remove the cover of the external hard disk drive subchassis; some of the components inside can produce electrical shock.
Appendix 3: EV-390 Controller Installation Use the instructions in Section 5 to install the EV-390 Hard Disk/Floppy controller board. The only change required for this controller is the installation of a floppy disk ribbon cable. To install the hard disklfloppy disk controller: 1. Remove the floppy disk controller card already in your system. 2. Attach one end of the 34-pin daisy-cable to the J6 connector on the upper left side of the EV-390 board.
The daisy-chain cable is keyed to prevent installing the cable backwards. The untwisted end of the cable should be attached to the J6 connector. Make sure to align the cable with pin 1 on the controller; the color stripe on the cable should be on the right side as you see the component side of the controller. (See Figure 16.) 3. Connect the cable's middle connector to drive "B", and connect the end connector to drive "A". (See Figure 16.) 4.
Appendix 4: Controller Specifications ,,-.., ,.-.., Encoding Method MFM (EV-390/391) RLL (2,7) (EV-392) Cylinders Per Drive Up to 1024 Bytes Per Sector 512 Sectors Per Track 17 (EV-390/391) 26 (EV-392) Head Selects 16 Drive Selects 2 Data Transfer Rate 5 Mbits/sec. (EV-390/391) 7.5 MBits/sec.
Host Interface Type IBM PC/XT Connection Uses any expansion slot (it will not fit half-length slots) Power Voltage +5VDC +/- 5% and +12VDC +/- 10% Maximum Current depends of drive type Environmental Limits Ambient Temperature 0-550 C (32-131 0 Fahrenheit) Relative Humidity 10-95% non-condensing Altitude 0-3000 meters (0-9840 feet) Air Flow 0.25" from component surface Interleave factor The recommended interleave factor is 5.
Appendix 5: Hard Disk Specijicatz'ons TABLE 3 Hard Disk Specifications (I) ,"'-'\ Seagate ST225 Seagate ST251 Seagate ST4026 Seagate ST4038 21.4MB 42.8MB 21.4MB 31.
,,.....,, TABLE 4 Hard Disk Specifications (II) Seagate ST4051 Seagate ST4096 NEC 5146 Miniscribe 3650 42.5MB 80.2MB 42MB 42.
TABLE 5 Hard Disk Specifications (III) Micropolis 1333A Micropolis 1335 Seagate ST238 44.5MB 71.3MB 315MB 5 8 4 Cylinders 1024 1024 615 Tracks 5120 8192 2460 Encoding Type MFM MFM RLL (2,7) Transfer Rate Mbits/second 5 5 7.5 Average Access (msec) 30 30 .
Appendix 6: Questions &Answers Q. Do I need to change the dipswitch settings on the system motherboard? A. Normally, you do not need to change the dips witch settings when you install a hard disk subsystem. However, if you removed one of your floppy disk drives so you can install an internal hard disk drive, check your computer owner's manual to see how to set the motherboard for one floppy drive installed. Q. When I boot up, the message 1701 hard disk not recognized comes up. What should I do? A.
Q. When I boot up, the message invalid drive specification appears. What should I do? A. Make sure you followed the hard disk formatting instructions in Section 6 of this manual properly. If you have a IBM PC 1, you should run the EVEREX1.EXE program each time you boot up from DOS. Q. After I format the disk, the drive shows a lot of bad tracks. What should I do? A. Make sure you followed the formatting instructions in Section 6 properly; we suggest doing the entire formatting process again.
Q. Why is it that after exchanging controllers, the drive does not work? A. A unique physical format is required for each type of controller. This means if you formatted your hard disk drive with one type of controller and then replaced the controller with another type, you must reformat the drive for the newer controller to work with your drive. Please refer to Section 6 of this manual for instructions on how to reformat your drive.
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