AT&T PC 6300 - System will Not Access Hard Disk 5-36

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MAINTENANCE

System

Will

Not

Access

Hard

Disk

Caution:

This

will

destroy

ALL

data

stored

on

the

HDU.

If

the

HDU

problem

is

the

result

of

the

heads

becoming

misaligned,

the

following

message

may

be

received

when

trying

to

read

or

write

to

the

Hard

Disk:

Non-DOS

disk

error

reading

drive

C

Abort,

Retry,

Ignore?

_

5-36

n

n

n

n

n

n

A

unit

that

has

just

been

received,

transported

to

a

new

location,

or

equipped

with

a

new

HDU

may

experience

trouble

accessing

the

^

HDU

(drive

C).

This

becomes

apparent

when

the

system

will

not

j

|

boot

from

drive

C

or

recognizes

it

as

being

a

non-DOS

partitioned

disk.

This

is

probably

the

result

of

rough

handling

during

shipment

or

transporting

of

the

unit

and

is

an

indication

that

the

HDU

heads

may

be

misaligned.

Even

though

the

HDU

cannot

be

read

from

or

written

to,

the

Resident

Diagnostics

will

show

the

HDU

(Fixed

Disk)

status

as

Ready.

The

first

fix

attempt

in

the

^

case

of

a

previously

bootable

Hard

Disk,

which

is

no

longer

j

?

accessible,

is

to

try

to

retransfer

the

Operating

System

to

the

Hard

Disk

Unit

by

means

of

the

SYS

command

present

in

your

MS-DOS

system

diskette.

This

may

recover

any

lost

data

from

j

j

one

of

the

first

tracks

on

the

Hard

Disk.

If

this

fails,

then

try

reformatting

the

HDU

to

clear

the

problem.

P

n

n

'

I

n

n

1

0

n

n

n

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