IBM RS/6000 7043 43P manual Map, Flag

The following steps should be followed if the data on the drive is t overwritten:

1. Use the

"Erase Disk"

selection to overwrite

the

data

on

the

driv

2.

Do

a

format

without certify.

3.

Run

a

second

pass

of

the erase

disk

selection.

For a newly installed drive, you can

insure

that

all

blocks

on

the

driv

overwritten

with

your

pattern if you

use

the following procedure:

1. Format

the

drive.

2. Check the defect MAP by running the Erase Disk selection.

Note:	If	you use			the	"Format and			Certify" option,	there may	be so
	which		get	placed		into the grown defect MAP.
3. If	there		are	bad blocks			in	the	defect MAP, record the informati
and	ensure		that	this		information		is	kept with the	drive. This	data
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

version

of

the

Erase

Disk

selection

which was used in step 2.

Note:

Using

the

same

version

of

the

service

aid is only critical i

any

bad blocks

found

in

step

3.

6. Compare

the

bad

blocks

which

were

recorded with the drive in ste

those

which

now

appear

in

the

grown

defect

MAP.

Note: If there are differences between the saved data and the obtained data, then all sectors on this drive cannot be overwr The new bad blocks are not overwritten.

7. If	the	bad	block	list is	the same, continue running the service ai
the	disk	with	the	chosen	pattern(s).

This task may be run directly from the AIX command line. The following usa statement describes the syntax of the command:

Usage:

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	flag. Forces disk		erasure even if all blocks cannot be era
	errors	accessing	grown	defect map.
9-26	7043 43P Series User's		Guide