Hi, all

I have a question about low level format.
I'm using a compiler(Arm-comiler) that manages licence with
"C-dilla".

when this 45days trial version expires,
I couldn't reinstall again, except for using low level format.

By this, I got a question "format.com" between Low level format.
tell me this differnce.
Posted on 2002-01-22 20:33:55 by muzidowa
Because a real "low level" format takes time "format.com" will avoid this and try just to remake the filesystem essential files like mbr/fat/root entrys, after this he will read all other sectors/tracks to ensure all is ok but it will not overwrite them.... a copy protection scheme can eventually read absolute disk data a still detect "is was here"...

Besides a "real low level format" is only available on floppy today, the equivqlent format for HDDs is done by the manufacturer only once....

schemes to erase confidential data in sure ways are more elaborated...

However you are on the edge with such questions... beter read the rules for this messageboard...and yeah buy your programms ;)
Posted on 2002-01-22 20:53:43 by BogdanOntanu
thanks BogdanOntanu

surely I read the rules for this messageboard.
but i didn't want cracking although cracking can be another way
to get something, pravately.

I just wonder though "format" hard disk, where that data saved.
maybe i was still in hard disk, then which area?
which area could be safe after "format"?

right this, i was wondered.
Posted on 2002-01-22 21:52:51 by muzidowa
No Data can escape a big ol' ElectoMagnet! :grin:

A strong pernament magnet will work too!...

Of course if you try such things, be prepared to "clean-up" the the chaos, and format it for an OS to be put on.

(( However, i suggest just buying the software rather doing this every 45 days. ))

NaN
Posted on 2002-01-22 22:41:41 by NaN
NaN,

doesn't that electro-magnet trick "damage" the hard-drive a bit, or is it totally secure ?

Bogdan,

I'm able to format my (IDE) hdd with a (free) tool that comes from Maxtor... I use it sometimes to "clean" my hard drive, and reorganize my partitions...
If someone wants it, I can put the file on the forum... (it is also available at download.com).
Posted on 2002-01-23 00:55:07 by JCP
Dunno, never tried... I imagine you'd need to use the BIOS low level format, and then fdisk, and then normal format to get it back to normal...

But i dont see how it would "pernamently" damage anything... to my understanding, "bad sectors" are just areas where the magnetic material has degraded from physical wear and tear... (ie, drive heads momentarily touch surface etc. etc. etc)

NaN
Posted on 2002-01-23 01:07:42 by NaN
Most bios today doesn't have low-level format.
Posted on 2002-01-23 06:18:34 by dxantos
regular format: install a clean FAT.
format /u: call BIOS function to format each and every sector (or was it track?)

lowlevel format: as far as I've understood, this is the process of
"preparing the raw disk". As you may or may not know, for each
sector on a disk, there is some additional information (that is only
available to the drive itself - and this is another reason actual drive
capacity isn't as large as the drive manufacturers claim).
Posted on 2002-01-23 09:12:09 by f0dder
Nan,

Take care with magnets close to your Hard Drive :D
You can sure erase data from it, but you can also damage it permanently...

Hdd also has some "syncro data on syncro tracks" and erasing this data makes your HDD unusable even after low level format (factory may be able to repair it)

Also magnets can damage the heads moving coils or make "too hard" transitions to the hdd surface..ie transitions that a tiny little hdd head can not erase them anymore

so please take care :)
Posted on 2002-01-23 18:06:00 by BogdanOntanu
Thanx for the info, but i personally would never have the need to be so desparite :)

But its always good to learn of such things.. (didnt know about the "syncro data on syncro tracks")

:alright:
NaN
Posted on 2002-01-23 20:34:45 by NaN
To get rid of all unwanted data on your HD.

1] Delete all unwanted files
2] Create text file with any text or just spaces in it.
3] Name it simply 1.txt or just 2
4] Go to DOS prompt:

Microsoft(R) Windows 98
(C)Copyright Microsoft Corp 1981-1999.

5] C:\WIN98SE\COMMAND\>copy x.txt+x2 x3.txt

Copies one or more files to another location.

COPY source [+ source [+ ...]] [destination

source Specifies the file or files to be copied.
/A Indicates an ASCII text file.
/B Indicates a binary file.
destination Specifies the directory and/or filename for the new file(s).

To append files, specify a single file for destination, but multiple files
for source (using wildcards or file1+file2+file3 format).

PS. In no time your HD is full.
Now DEL x*.*
and on whole HD is only whatever was in this text file.

BTW I have even better method.
:)
Posted on 2002-01-24 05:26:07 by forge
if there is somebody with enough motivation (and money ;)) they
can still recover the contents of your drive, though. And needless
to say, the "copy" approach would have to be done without disk
cache, or at least have the disk cache flushed after the copying.
Posted on 2002-01-24 06:26:07 by f0dder
if there is somebody with enough motivation (and money ) they can still recover the contents of your drive,


This is very subjective.
Posted on 2002-01-24 06:36:46 by forge