DEFRAG on FAT32 corrupt volume

NTFSD
1

Hi all,

I have a FS filter to cript files from a specific directory. It works
fine on FAT32 or NTFS. When DEFRAG run on NTFS, it works fine, but when
I run DEFRAG on FAT32, it corrupts the volume.
In my point of view, DEFRAG dispath IRPs to drivers of storage and
File Systems filters are above them but does not receive theses IRPs.
Any help is welcome.

Thanks in advance,
Fernando.

2

From what you’ve written, it is hard to
say what you are doing wrong.

What exactly mean “corrupt the files”
Are your encrypted files greater than their
unencrypted versions ?

L.