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RE: Cluster size

Subject: RE: Cluster size
Date: Thu, 16 Dec 2004 15:19:57 -0500

Lily,

Is this the information your looking for?

http://www.computerworld.com/softwaretopics/os/story/0,10801,73872,00.html

and more info on Fat and NTFS at

http://www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us
/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prkc_f
il_lxty.asp

Tim Watkins


-----Original Message-----
From: Lily Tse [mailto:lily_tse908@yahoo.com] 
Sent: Monday, December 13, 2004 7:15 PM
To: forensics@securityfocus.com
Subject: Cluster size



Hi,
  I know that there are different default cluster sizes an operating 
system uses during a high level format depending on how big the volume 
is.  However, cluster size can be changed easily.  Assuming that the all 
the VBRs on a hard disk have been destroyed (BIOS parameter block info 
is lost), is there any way I can find out the exact cluster size for 
FAT16, FAT32, NTFS, EXT2, and EXT3 volumes?  I have been studying different
filesystems to look for hints, but it seems like only the BPBs provide
cluster information.  I have also looked at a hard disk with a hex editor to
find hints, but no luck.   

Thanks

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