Exercise 3-1 Floppy Disk Drivesakali2/ET127/Lab3-1.pdf4 A Common 34-Pin Connector for 3 ½-Inch Floppy Disk Drives Cut-out Key Cut-out
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Exercise 3Exercise 3--11
Floppy Disk DrivesFloppy Disk Drives
Exercise 3Exercise 3--11
Floppy Disk DrivesFloppy Disk Drives
Copyright © 2002 Heathkit Company, Inc. All Rights ReservedCopyright © 2002 Heathkit Company, Inc. All Rights Reserved
3
Mother Mother
board board
connectorconnector
3½3½--inchinch
Twisted wiresTwisted wires
5.255.25--inchinch
3½3½--inchinch
5.255.25--inchinch
4
A Common 34A Common 34--Pin Connector forPin Connector for
33½½--Inch Floppy Disk Drives Inch Floppy Disk Drives
CutCut--outout CutCut--outoutKeyKey
5
Connectors for 5¼Connectors for 5¼--inch drivesinch drives
Connectors for 3½Connectors for 3½--inch drivesinch drives
Drive ADrive A
ConnectorsConnectors
Drive BDrive B
ConnectorsConnectors
6
Rear View of 3½-Inch Drive...Rear View of 3½-Inch Drive...
DataData
CableCablePowerPower
CableCable
StripeStripe
SideSide
Yellow Wire = 12 VoltsYellow Wire = 12 Volts
Red Wire = 5 VoltsRed Wire = 5 Volts
Black Wires = GroundBlack Wires = Ground
8
Most Common
Installation Problems
Most Common
Installation Problems
Control cable backwardsControl cable backwards
Jumpers on legacy drives wrongJumpers on legacy drives wrong
9
Having problems reading or Having problems reading or
writing to disks?writing to disks?
Having problems reading or Having problems reading or
writing to disks?writing to disks?
10
DC
AC
V
OFF
1000
200
20
2
200m
20M
2M
200k20k
2k
200
A
200µ
20m2m
200m10A
V COM mA 10A
K
Use VOM to Use VOM to
check check
continuitycontinuity
11
Spend $5.95 for a new cableSpend $5.95 for a new cableSpend $5.95 for a new cableSpend $5.95 for a new cable
12
Common Floppy Disk Drive
Troubleshooting Problems
Common Floppy Disk Drive
Troubleshooting Problems
Can’t read floppy diskCan’t read floppy disk
Spilled liquid on diskSpilled liquid on disk
Can’t read or write to diskCan’t read or write to disk
Random read/write problemsRandom read/write problems
Floppy drive makes grinding soundsFloppy drive makes grinding sounds
Phantom directoriesPhantom directories
Computer keeps accessing floppy drive even when Computer keeps accessing floppy drive even when no disk is in itno disk is in it
15
Try a Different DiskTry a Different DiskTry a Different DiskTry a Different Disk
HH
DD
Win 98Win 98
Boot DiskBoot Disk
HH
DD
Win 98Win 98
Boot DiskBoot Disk
HH
DD
Win 98Win 98
Boot DiskBoot Disk
HH
DD
Win 98Win 98
Boot DiskBoot Disk
HDHD
19
Still no luck finding the R/W
problem? Time to swap...
Still no luck finding the R/W
problem? Time to swap...
ControllerController
CableCable
Floppy Disk DriveFloppy Disk Drive
20
Random Read/Write Problems...Random Read/Write Problems...
Change cableChange cable
Change driveChange drive
Check power supplyCheck power supply
24
Advantages of Cable Select
Simpler hard drive configuration.Simpler hard drive configuration.
Eliminates rejumpering.Eliminates rejumpering.
Reduces electrical signaling problems.Reduces electrical signaling problems.
25
Disadvantages of Cable Select
Requires a different hard drive data cable.Requires a different hard drive data cable.
Both hard drives on the same motherboard Both hard drives on the same motherboard
data port must be able to support Cable data port must be able to support Cable
Select.Select.
The hard drives on the data cable must be The hard drives on the data cable must be
connected in a certain order.connected in a certain order.
26
The Cable Select Data Cable
Gray Connector - SlaveGray Connector - Slave
Black Connector - MasterBlack Connector - Master
Blue Connector – IDE PortBlue Connector – IDE Port
35
The 528MB BarrierThe 528MB Barrier
1024 cylinders1024 cylinders
xx
16 logical heads16 logical heads
xx
63 sectors63 sectors
xx
512 bytes512 bytes--perper--sectorsector
528,482,304 bytes or 528MB528,482,304 bytes or 528MB
36
The 8.4GB BarrierThe 8.4GB Barrier
1024 cylinders1024 cylinders
xx
256 logical heads256 logical heads
xx
63 sectors63 sectors
xx
512 bytes512 bytes--perper--sectorsector
8,455,716,864 bytes or 8.4GB8,455,716,864 bytes or 8.4GB
The 137GB BarrierThe 137GB Barrier
268,435,456 sectors268,435,456 sectors
xx
512 bytes512 bytes--perper--sectorsector
137,438,953,500 bytes or 137GB137,438,953,500 bytes or 137GB
Maximum Volume Sizes
FILE SYSTEMFILE SYSTEM MAX SIZEMAX SIZE OS OS SUPPORTEDSUPPORTED
FAT(FAT16) 2GB DOS and all versions ofFAT(FAT16) 2GB DOS and all versions of
WindowsWindows
FAT32 2TB Windows 98, ME, 2000FAT32 2TB Windows 98, ME, 2000
and XPand XP
NTFS 2TB Windows NT, 2000,NTFS 2TB Windows NT, 2000,
and XPand XP
NTFS5 2TB Windows 2000 and XPNTFS5 2TB Windows 2000 and XP
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