USER'S GUIDE - minuszerodegrees.net
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1. Wrong drive select jumped on hard disk cables reversed bad cables no power to drive bad drive PROBLEM Error code 40 or 20 appears on screen SOLUTION Cables reversed bad cables or drive malfunction PROBLEM After you do a high level format Format C S the message Insert disk drive and press ENTER appears The system thinks drive C is a floppy disk drive SOLUTION Motherboard switches are set for the incorrect number of floppy disk drives Check to see if RAM disk drivers are present PROBLEM Bad Track 0 using DOS 3 1 SOLUTION PROBLEM SOLUTION Make a config sys file with BUFFERS 99 Reboot to load the configuration Bad Track 0 using DOS 2 1 DOS 2 1 cannot support bad tracks above 16 7 MB Upgrade system to DOS 3 1 If you require further information or other technical support please contact your authorized dealer IBM IBM PC AT and IBM PC XT are trademarks of International Business Machines Corporation MS DOS is a registered trademark of Microsoft Corporation Compaq is a registered trademark of Compaq Computer Corporation COPYRIGHT 1987 WESTERN DIGITAL CORPORATION ALL RIGHTS RESERVED THIS DOCUMENT IS PROTECTED BY COPYRIGHT AND CONTAINS INFORMATION PROPRIETARY TO WESTERN DIGITAL CORPORATION ANY COPYING ADAPTATION DISTRIBUTION PUBLIC PERFORMANCE OR PUBLIC DISPLAY OF THIS DOCUMENT WITHOUT THE EXPRESS WRITTEN CONSENT OF WESTERN DIGITAL2. heads sectors track sector size 30 megabytes Note 1 megabyte 220 bytes 1 048 576 bytes X 31 457 280 8 17 512 X 451 8 451 cylinders Note Round X down to the nearest whole number Since Y Total capacity X Y 612 451 or 161 The split 451 161 Figure 3 Logical Format Calculation EXAMPLE FOR ST 225 315 CR The program displays the initiate format message Press Y to begin formatting drive C or D with interleave 03 or value entered above If any key other than Y is typed the program displays the following message and returns the operator to DOS Nothing done exit returning to system A gt If an error occurs while formatting the program imme diately terminates displays the following error message and returns the operator to DOS XX is the hexadecimal BIOS completion code defined in Table 3 Error completion code XX A gt If Y is typed the program initiates the low level format The following message indicates that the controller is formatting the drive Formatting The screen displays the following message if there are no resulting errors Do you want to format bad tracks answer Y N CE eee The user is prompted to enter via keyboard a bad track list if Y is pressed This list should be provided by the drive manufacturer Because of the logical addressing used by DOS mark ing an entire track bad will result in more
3. initiate format message Repeat this low level format procedure for a second physical drive if present after successfully formatting physical drive C Current versions of DOS allow no more than 32 mega bytes per drive Therefore a 40 megabyte drive may be divided into two virtual drives using the virtual option Figure 3 provides an example of how to calculate total drive capacity and establish virtual parameters Enter Y for virtual configuration Do not attach another physical drive to the controller or add another Winches ter controller to the system when using virtual configura tion Also do NOT repeat this low level format procedure for logical drive D The program continues with the following display Key in cylinder number for drive split as vvv where vvv number of cylinders for drive C 1 4 digits Enter the ending cylinder number for drive C Drive D uses the remaining cylinders Figure 3 illustrates how to calculate a virtual split The capacity of a drive can be easily calculated as follows Capacity Cyl Heads Sectors Tracks Sector Size in Bytes If a drive has 612 cylinders 8 heads 17 sectors per track and a 512 byte sector size then calculate the logical split as follows Total capacity 42 614 784 bytes or 612 8 17 512 To split the drive into 2 logical drives of 30 and 10 megabytes each of X and Y respectively do the following calculations Because X
4. than one logical address being marked bad As DOS can only accept a limited number of defects a drive with excessive media defects may cause the FORMAT program to terminate with an error The displayed error is typically TRACK 00 BAD DRIVE UNUSABLE Pressing Y causes the program to display the following message Key in bad track list as follows ccc h where ccc bad track cylinder no 1 4 digits h bad track head number 1 2 digits Table 4 Stepping Rate Codes Code Rate 3 msec per step 45 psec per step 60 psec per step 18 sec per step 210 psec per step 75 psec per step 30 psec per step 18 usec per step NO OSWN O Type in the cylinder and head numbers for the bad tracks separate the cylinder and head numbers with a space and follow with a RETURN EXAMPLE 160 1 161 2 304 3 223 4 223 2 CR The program continues More Y N Enter the extra bad track Terminate bad tracking format ting by typing N CR The program continues BAD TRACK MAP TRACK ADDR PROBLEM ccc h USER SUPPLIED If no errors occurred the program ends execution of the low level format with the Format Successful message Format Successful System will now restart Insert DOS diskette in drive A Press any key when ready be formatted Do NOT virtually configure the second physical drive Do NOT run the low level format on the second logical drive if drive C was vi
5. CORPORATION IS STRICTLY PROHIBITED THE RECEIPT OR POSSESSION OF THIS DOCUMENT DOES NOT CONVEY ANY RIGHTS TO REPRODUCE OR DISTRIBUTE ITS CONTENTS OR TO MANUFACTURE USE OR SELL ANYTHING THAT IT MAY DESCRIBE IN WHOLE OR IN PART WITHOUT THE SPECIFIC WRITTEN CONSENT OF WESTERN DIGITAL CORPORATION Doc No 79 000 173 000 Western Digital 2445 McCabe Way Irvine California 92714 800 847 6181 W1441S 9 8 100M ee O OOO
6. Failed 07 Set Parameters Failed 09 Attempt to DMA Across 64K Boundary 0B Bad Track 10 Uncorrectable Data Error 11 ECC Error Corrected 20 Controller Failure 40 Seek Failure 80 Time out BB Undefined Error FF Read Status Failed Format Step Instructions 1 At the A gt prompt load and run the DOS debug utility Type DEBUG Press CR 2 At the debug prompt Type g c800 5 Press CR The controller format program displays one of the following messages 2A WX2 Format Revision 7 0 Copyright Western Digital Corp 1985 AH Relative drive number 0 7 AL Interleave factor 3 standard Press Y to begin formatting drive C with interleave 03 If you have message 2A go to step 3 2B XT GEN Dynamic Formatter Rev 1 0 9 Copyright Western Digital Corp 1987 Current Drive is C Select new Drive or RETURN for current If you have message 2B go to step 5 CAUTION Remember that all existing data on the target drive is lost during formatting Back up your data before continuing To abort the format hit any other key except Y 3 To start the format for drive C with interleave 3 Type Y When the format is completed the following displayed S Format Successful A gt If you have a second drive to format or wish to change the interleave factor go to step 3A Otherwise skip to step 4 3A To format a second drive or change th interleave factor you must return to the de
7. USER S GUIDE WDXT GEN Winchester Disk Controller Important Information Do Not Discard WESTERN DIGITAL INTRODUCTION The installation of the WDXT GEN controller consists of physically installing the XT GEN controller board formatting the disk drives The WDXT GEN controller is an easy to install primary controller There are no confusing jumpers for you to set You simply order the feature number which corresponds to the drive you wish to install Table 1 Feature Number vs Disk Drives lists several major disk drive manufacturers and the model numbers that correspond to each Western Digital feature Just look in the table locate your disk drive then order the corresponding ee eee ca Table 2 WDXT GEN Feature Number Characteristics Western Digital feature number Table1 Feature Number vs Disk Drives WD Feature Drive Drive Model Number Manufacturer Number F300 F320 Alps DRNO20A DRM020A CMI 3426 Cognito PT925 Fuji FK302 26 LaPine LX200 LX2000 Microscience HH325 HH625 HH725 Miniscribe 3425 7426 8425 Mitsubishi MR522 NEC 5126 Okidata 0D526 Olivetti HD662 12 Rodime RO365 Seagate ST125 ST138 ST225 Syquest SQ325F SQ325AF Tandon TM262 TM362 TM702 F335 CDC WRENII 9415 5 38 Citoh 3530 Seagate ST4038 F336 CMI 6640 E Rodime RO203E Syquest SQ340AF Tulin T240 F340 Micropolis 1304 Seagate ST251 JD WD Featu
8. bug utility step 1 At the debug prompt Type rax Press CR The debug program displays the following AX 0000 At the colon prompt enter the drive number and interleave factor followed by a RETURN xxyy where xx relative drive number yy interleave factor For drive C xx 00 and drive D xx 01 For interleave factor 3 yy 03 The interleave factor is system dependent While an interleave factor of 3 is standard 3 may not be the best interleave factor for your system You can determine the interleave factor through experimentation however if you don t know your optimum interleave factor start with an interleave factor of 3 To set drive D with an interleave factor of 3 Type 0103 Press CR This sets the interleave factor at 3 for drive D At the debug prompt Type g c800 5 Press CR The controller format program displays the following IM WX2 Format Revision 7 0 Copyright Western Digital Corp 1985 AH Relative drive number 0 7 AL Interleave factor 3 standard Press Y to begin formatting drive D with interleave 03 Type Y When the format is completed the following displays Format Successful A gt This completes your formatting After you see this message go to step 4 4 Load and execute the FDISK and FORMAT utilities See your DOS manual for details After you complete step 4 this completes your installa tion Do not go to step 5 unless you have message 2B 5 E
9. cover plate at rear of slot to be used by WD board Do not remove cover plate Install board Reinstall screw clamping down both clip and cover plate Figure 2 WDXT GEN Board Installation Summary Next using a screwdriver loosen the screw holding the expansion slot bracket Remove the screw but keep the bracket in place Save the screw to hold the new controller board and the bracket Connect the 34 pin wide control cable connector to J1 on the controller board Check that Pin 1 of the cable connector adhd eee goes to Pin 1 on the controller board Pin 1 of the cable connector is typically located on the color coded side of the cable Connect the 20 pin data cable to J2 Drive 0 Data Con nector on the controller board Check that Pin 1 on the cable is connected to Pin 1 on the controller board If a second drive is being installed connect the other 20 pin data cable to J3 Drive 1 Data Connector on the controller board Verify that the disk drives are properly installed Check the drive select jumpers and drive termination resistors See the disk drive installation manual for further information DO NOT USE THE RADIAL SELECT OPTION To install the controller board press and insert the board into the expansion slot Check that the board is seated properly by pressing down firmly on both ends of the board After the board is seated firmly in the socket secure the board and clip with the bracket screw that you rem
10. nter your choice of drives at this point The program continues Curent Interleave is 3 Select new Interleave or RETURN for current Ess Enter your choice of interleave at this point The program continues The next displayed message is Are you dynamically configuring the drive answer Y N Enter N if you are NOT dynamically configuring the drive The program displays the initiate format message Continue from that point Enter Y if you ARE dynamically configuring the drive The program displays the initiate dynamic configuration message Key in disk characteristics as follows ccc h rrr ppp ee o where ccc total number of cylinders 1 4 digits number of heads 1 2 digits rrr starting reduced write current cylinder 1 4 digits ppp write precomp cylinder 1 4 digits ee max correctable error burst length 1 2 digits range 5to 11 bits default 11 bits o CBB option byte step rate select 1 hex digit range 0 to 7 default 5 refer to controller and drive specification for step rates Enter each value separated by a space and follow the complete entry with a RETURN Enter physical cylinder values Refer to Table 4 for step rates and the step rate codes EXAMPLE FOR ST 225 615 4 616 616 11 5 CR Program displays Are you virtually configuring the drive answer Y N Enter N if no virtual configuration Program displays
11. oved earlier CAUTION When routing cables be careful not to pinch them Cables must not get caught between the cover and the boards nor should they obstruct any air flow path from fans or vents FORMAT INSTRUCTIONS The format instructions that you follow are simple pro cedures to tell the computer that you have either one or two Winchester disk drives installed Run Debug Utility The DEBUG Utility supplied with DOS initiates the control ler format program and physically formats the drive While you are running the controller format program prompts request you to answer questions that describe your system See your DOS manual for detailed instructions on how to run the debug utility Format Notes 1 Debug is usually located on the Supplemental Disk 2 For IBM systems only at the debug prompt verify that the BIOS is 10 27 82 or later by doing the following Type d 000 fff5 fffc Press CR 3 Remember if any key other than Y is typed when initiating the controller format program the program displays the following message and returns you to DOS Nothing done exit 4 Should the system detect an error during formatting the program terminates returns to the operating sys tem and displays the following error message Error completion code xx See Table 3 for a list of error codes Table 3 Error Codes Completion Codes Code Summary 01 Bad Command 02 Address Mark Not Found 04 Sector Not Found 05 Reset
12. re Formatted Number of Pre Comp Step Number Capacity Heads Cylinders RWC Rate F300 F320 21 MB 4 615 307 30 none microsecond F335 32 MB 5 733 367 18 none microsecond F336 32MB 6 640 210 18 210 microsecond F340 42 MB 6 820 410 18 none microsecond The F300 allows e dynamic low level formatting bad track formatting INSTALL BOARD This section contains instructions for the physical installa tion of the controller board an IBM Personal Computer XT compatible Winchester disk controller If the disk drives are being installed internally locate the controller board in the closest available expansion slot next to the power supply EXCEPT do not use the slot closest to the power supply in the IBM Personal Computer XT CAUTION virtual drive splitting Handle the controller board by the ends of the board Some of the chips are static sensitive and damage may occur if the board is incorrectly handled WARNING Turn off power before opening compu ter cover and installing controller board Figure 1 shows the connector locations J1 J2 and J3 on the XT GEN board and the location of the BIOS ROM U13 WDXT GEN Connectors BIOS Location and Clip Figure 1 Install clip on board as shown in Figure 2 Figure 2 contains a summary of the board installation steps Push clip on board as shown until it snaps into place Remove screw holding PC
13. rtually configured OR ease Repeat Step 1 2 2B and 5 if a second physical driveisto 7 Load and execute the DOS FDISK utility for both drives regardless of virtual or physical configuration FDISK partition data should indicate the proper split of cylinders for both drives 8 Load and execute the DOS FORMAT utility for both drives regardless of virtual or physical configurations If You Have A Problem First check your physical installation Check for reversed cables an overloaded system power supply incorrect drive selection etc This section lists some common problems and possible solutions when installing the controller PROBLEM Winchester activity LED always lit SOLUTION Cables reversed drive malfunction or bad cables PROBLEM Nothing done exit appears when start ing the low level format program SOLUTION Did not press Y Restart at step 1 of format instructions PROBLEM System hangs with controller installed SOLUTION System BIOS may not handle Winchester disk Update system BIOS PROBLEM Error Reading Fixed Disk when booting the system SOLUTION DOS partition not active See FDISK instructions in your DOS manual PROBLEM Hard Disk Drive Not Ready or 01 Error Code SOLUTION System BIOS does not support Winches ter controller and drive Overloaded power supply Update system BIOS PROBLEM Error code 80 when formatting through debug SOLUTION
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