IBM H80 Series manual Aix, Fmtcert

For a newly installed drive, you can ensure that all blocks on the drive are overwritten with your pattern if you use the following procedure:

1.Format the drive.

2.Check the defect MAP by runningErase Diskthe selection.

Note:

If

you useFormat theand Certify

option,

there

may

be some

blocks

which

get placed into the

grown

defect

MAP.

3. If

there

are

bad

blocks

in

the

defect MAP, record the

information

presented

and

ensure

that

this

information

is

kept with

the

drive. This data is

used later

when

the

drive

is to

be

overwritten.

4. Use the drive as you would normally.

5. When

the

drive is no longer

needed and is to be

erased, run

the

same

version

of Erasethe Disk

selection

which

was

used

in

step

2.

Note:

Using

the

same

version

of

the

service

aid

is

only

critical

if

any

bad

blocks

were

found

in

step

3.

6. Compare

the

bad

blocks

which

were

recorded

with the drive in step 3 with

those

that

now

appear

in

the grown

defect MAP.

Note: If there are differences between the saved data and the newly

obtained

data,

then

all

sectors

on this

drive

cannot be

overwritten.

The

new

bad

blocks

are

not

overwritten.

7. If

the

bad

block

list

is

the

same,

continue

running

the

service

aid

to

overwrite

the disk with the chosen

pattern(s).

This task can be run directly from

the

AIX

command

line.

See

the

following

command

syntax:

diag -c -d deviceName -T "format [-s\ fmtcert erase -a {read write}]

[-F]"

Flag

Description

fmtcert

Formats

and

certifies

the

disk.

*

Available

in

no-console

mode

only.

-F

Force the disk erasure even if all blocks

cannot be

erased

due

to

errors

accessing

grown

defect

map.

Note: The Erase Disk option in command line mode uses default values. To

selectively read or write,diag usecommandthein console mode.

132 RS/6000 Enterprise Server Model H80 Series User's Guide