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2NDRIVE.PRS
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1993-12-20
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╬╠╧╧╬╠╬╠╬╠╡
╨╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╙
╢ Φ φ ≥ ≤ α δ δ Φ φ µ α █ │ one a "master" and the other a
╢ ≥ Σ Γ ε φ π Φ π Σ █ │ "slave." Essentially, one
╢ τ α ± π π ± Φ ⌡ Σ █ │ controller is disabled and the
╤▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█ │ master controls both. If the two
│ drives are not identical you may
ß√ αδδΣφ ∞⌠δ⌡Σ√ │ have to make the slower one the
ôçä âæêòä: │ master. The jumper layout and
│ position vary greatly from drive
│ to drive so you will have to
IDE stands for Integrated │ check the data sheet or contact
Drive Electronics; the controller │ the manufacturer to get the
is actually on the drive logic │ details for your drive.
board. The interface card is │
merely a contrivance to allow │
connection to the AT bus, │ ÅçÿÆêéÇï éÄìÆêâäæÇôêÄìÆ:
sometimes with other features │
added like I/O (Input/Output) │ ÷Φ±Φφµ - If the ribbon cable
support, etc. To prevent the two │ to the first drive does not have
controllers from conflicting the │ an extra connector you will have
drives must be jumpered to make │ to get another cable. Both drives
are connected in parallel on the │ drives have a 1/4 inch tab
same cable. There should be a │ connector for such a ground and
stripe along one edge of the │ some power supplies have several
cable marking the pin #1 side. │ wires with 1/4 inch push on
Make sure this corresponds to the │ connectorsdangling from a screw
#1 pin on the drive. Try to route │ on the chassis for this purpose.
the cables as far as possible │ Of course, you will also need to
from any raster scanning boards │ connect the new drive to a
like video or scanner │ connector on the power supply.
controllers. These frequently │ Any one that fits will do.
emit a lot of RFI (Radio │
Frequency Interference) and could │ ε±ΦΣφ≤α≤Φεφ - The question
cause data errors on the drives │ commonly asked is, "What is the
(I learned this the hard way!). │ safest way to orient the drive?
Be sure you have a good │ Can I mount it sideways?" The
electrical ground. If you use a │ bearings in many older drives are
plastic mount, make sure there is │ designed to support the platters
a jumper wire of some sort │ using gravity to maintain proper
connecting the body of the drive │ end thrust on the spindle shaft.
with the computer chassis. Most │ In other words - horizontally
with the drive right side up. │
(Usually the logic board is on │ üêÄÆ ÆäôöÅ:
the bottom.) Many people have │
successfully operated drives │ Boot the computer and enter
horizontally for extended │ the CMOS Setup program. You will
periods. An argument against this │ need to enter the appropriate
is that, as the bearings wear, │ drive types for both drives. You
the platters drop out of │ may need to use the user defined
concentricity with the heads. It │ option. The drive type and user
would seem that the drive would │ settings should be specified in
probably fail in some other way │ the drive documentation and
long before the bearings wear │ possibly on a label on the drive
sufficiently to produce │ itself. If you have an AMI BIOS
read/write errors from mis- │ you will have to set the scratch
alignment. However, I try to │ RAM option to 2 to allocate
mount hard drives horizontally │ enough memory to hold the
unless the manufacturer states │ parameters for two drives. Save
that they may be mounted │ the settings to CMOS RAM and
otherwise. │ reboot the computer. You should
│ now be operational.
│
φε≤Σ≥ εφ ∩α±≤Φ≤ΦεφΦφµ π±Φ⌡Σ≥: │ If your first drive was
│ partitioned, what had been your
When the BIOS assigns drive │ D: drive will become your E:
letters to hard drives it does so │ drive, etc. Any batch files or
in the following order: │ shell programs that
│ referencethese paths must be
1st physical drive │ adjusted. Some versions of FDISK
primary partition. │ allow you to partition a disk
│ without creating a primary
2nd physical drive │ partition. Doing so on the second
primary partition. │ drive would eliminate this
│ problem; however, if the first
1st physical drive │ disk failed you would no be able
extended partition, │ to swap them and boot from the
all logical partitions. │ remaining drive as DOS will only
│ boot from the primary partition.
2nd physical drive │ Remember, also, the partition
extended partition, │ from which you boot (usually the
all logical partitions. │ primary partition on the first
physical drive) must be marked as │
"active." Some versions of FDISK │
do this by default, others do │
not ñ │