Re: Format DASD? -- MIDRANGE-L

S/36 used to have an option on the DELETE command to write all binary 1's into 
the file.




jlangston@conexfreight.com on 09/02/99 11:01:54 AM
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Subject:        Re: Format DASD?

As a side bar,

I understand that doing it that way would be about the same as
a PC deletes files, it wipes out the FAT table.  I'm just curious
about actually deleting the files.

I know that there is a DoD delete for PCs, which writes over the
actual data 3 times, once with all 0's, once with all 1's and again
with something like 10101 or such.

I was just curious if the AS/400 had something similar.  It is not
something I would ever need, but I know that the AS/400 at
security level 50 classifies as a very secure machine as far as the
DoD is concerned.

Regards,

Jim Langston

"paats, marc" wrote:

> The best way to to this is a D-IPL (initialize the system). This will wipe
> all the data from your drives.The first thing the system will do is writing
> 0's all over the load source drive and since the AS/400 is a single level
> storage machine the data will be gone, you can count on that. After that the
> As/400 will install LIC and will ipl to DST. Next the drives you are going
> to add will be cleared in the same way. Then install the OS and take it from
> there.
> Make sure you make a backup (two) and you should be all set...Look in the
> backup and recovery guide..
>
> Marc Paats
>
> Paats_Marc@emc.com
>
> -----Original Message-----
> From: T. Jessica Miller [mailto:tealem@wrq.com]
> Sent: Wednesday, September 01, 1999 6:48 PM
> To: MIDRANGE-L@midrange.com
> Subject: Format DASD?
>
> I have a system that needs to be 'wiped clean' and I do not see the best way
> to
> do this.  Is there a way to 'format' the drive so that I can do a fresh
> install
> of OS/400 and be rid of all the old libs, usrprfs, docs, etc.?
>
> Thanks!
>
> Jessica
>
> "Stone, Brad V (TC OASIS)" wrote:
>
> > Hello all!
> >
> > I recently got a mail from a user of one of my tools and he wants it to
> > accept the CCSID of 5035.  Now, the only place I am moving data from their
> > machine is into a temp file that I create on the fly in QTEMP.
> >
> > Does anyone have any ideas of how this can be done?  I looked into the
> CCSID
> > parameter of CRTPF, but it says it ignores this field on *DATA type files.
> >
> > Would the ICGDTA keyword have anything to do with it?  It wasn't quite
> clear
> > what this does from the help text.
> >
> > I guess what is happening is when I copy their data into my temp file,
> > certain text must be getting corrupted since I am not using DBCS files.
> >
> > Thanks!
> >
> > Bradley V. Stone
> > BVS/Tools
> > http://www.bvstools.com
> >
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> --
> T. Jessica Miller
> WRQ Technical Engineer
> WRQ Inc, Makers of Reflection and Express Software
>
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