On Jun 16, 2006, at 7:24 AM, Mark Roberts wrote:

> Godfrey DiGiorgi wrote:
>
>> No need for a third party utility.
>>
>> * The Finder includes a "Secure Erase" feature for items you put in
>> the trash. See the menu command "Finder -> Secure Empty Trash".
>>
>> * If you need to erase an entire disk drive volume, the Disk Utility
>> application includes secure erasure of disk volumes.
>
> Which versions of the OS have these features? One of the Macs I'm
> dealing with is a G3 Powerbook. Don't know which version it's running
> yet, but it's at least 5 years old. maybe older.

All Mac OS X systems since v10.1 release in 2001.

PowerBook G3 represents a range of five models made from late 1997 to  
2002:

1997-98: PowerBook G3 "Hooper" - oldest, squared off case design with  
SCSI and serial ports
1998-1999: PowerBook G3 "Wall Street" - softer 'pillow' case design  
with SCSI and serial ports
1999: PowerBook G3 "Lombard" - thinner, pillow case design with USB  
and SCSI ports
2000-2001: PowerBook G3 "Pismo" with dual FireWire and USB ports

Hoopers and Wall Streets could run Mac OS X up to 10.1 but only to a  
limited extent, due to lack of RAM and video options. Lombards were  
made for only a short time, they can run 10.3 but had limited video  
cards so some things do not run well or weren't fully supported.  
Pismos can run all versions of Mac OS X up to the current 10.4  
generation.

If you need to scrub an older PowerBook drive that is not configured  
with Mac OS X:

- For a Pismo, it's very easy. Set the PowerBook into FireWire Target  
Mode and connect it to any other Mac OS X system via a FireWire  
cable. Then run Disk Utility and use one of the Secure Erase options.  
Or obtain a Mac OS X installation CD or DVD, boot the system with it  
(with the CD or DVD in the optical drive, power up the system with  
the 'C' key held down, this will automatically search for a bootable  
volume in the optical drive first). You can then run the Disk Utility  
from the Installer's Tools menu and use a secure erase option on the  
drive.

- For older PowerBooks, you'll need an installation CD for Mac OS X  
v10.1 specifically to boot the systems from the optical drive and  
perform a secure erase of the hard drive. If you don't have that, you  
can use a FireWire to SCSI adapter cable for a more modern system and  
a SCSI System Connector cable for the old PowerBook. The latter cable  
is inserted into the SCSI port, and connected to the adapter and the  
modern system and then the old PB system is started. This starts the  
PowerBook up as a SCSI Target Drive, which Disk Utility can then see  
and run a secure erase.

Without the right pieces on these older machines, doing a good secure  
erase will require finding a bootable CD or SCSI drive with Mac OS 9  
and a secure erase utility written for the older operating system.  
The age and value of such an old system means that it is probably  
much less trouble to extract the drive and physically destroy it  
rather than waste time finding all the bits to do a secure erase.

PowerBook G3 Pismo system are still quite viable ... I fitted mine  
with 768M RAM and a 60G fast drive in 2004 and used it until two  
months ago running Mac OS X v10.4.x, when I bought my PowerBook G4  
1.67Ghz system. I've since sold the PBG3 to a friend who is  
continuing to use it for his daily internet and accounting work. :-)

Godfrey

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