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way to use this tool on a TrueCrypt volume: First, make a backup copy of the TrueCrypt volume
(because the ‘
chkdsk
’ tool might damage the filesystem even more) and then mount it.
Right-click
the mounted volume in the main TrueCrypt window (in the drive list) and from the context menu
select ‘
Repair Filesystem
’.
P
ROBLEM
:
When trying to create a hidden volume, its maximum possible size is unexpectedly small (there is
much more free space than this on the outer volume).
P
ROBABLE
C
AUSES
:
1. The outer volume has been formatted as NTFS
2. Fragmentation
3. Too small cluster size + too many files/folders in the root directory of the outer volume.
P
OSSIBLE
S
OLUTIONS
:
Solutions Related to Cause 1:
Unlike
the FAT filesystem, the NTFS filesystem always stores internal data exactly in the
middle of the volume. Therefore, the hidden volume can reside only in the second half of
the outer volume. If this constraint is unacceptable, do one of the following:
•
Reformat the outer volume as FAT and then create a hidden volume within it.
•
If the outer volume is too large
to be formatted as FAT, split the volume to several 2-
terabyte volumes (or 16-terabyte volumes if the device uses 4-kilobyte sectors) and
format each of them as FAT.
Solution Related to Cause 2:
Create a new outer volume (defragmentation is not a solution, because it would adversely
affect plausible deniability – see section
Defragmenting
).
Solution Related to Cause 3:
Note: The following solution applies only to hidden volumes created within FAT volumes.
Defragment the outer volume (mount it, right-click its drive letter in the ‘
Computer
’ or ‘
My
Computer
’ window, click
Properties
, select the
Tools
tab, and click ‘
Defragment Now
’). After
the volume is defragmented, exit
Disk Defragmenter
and try to
create the hidden volume
again.
If this does not help, delete
all
files and folders on the outer volume by pressing
Shift+Delete, not by formatting, (do not forget to disable
the Recycle Bin and System
Restore for this drive beforehand) and try creating the hidden volume on this
completely
empty
outer volume again (for testing purposes only). If the maximum possible size of the
hidden volume does not change even now, the cause of the problem is very likely an
extended root directory. If you did not use the ‘
Default
’ cluster size (the last
step in the
Wizard), reformat the outer volume and this time leave the cluster size at ‘
Default
’.
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If it does not help, reformat the outer volume again and copy less files/folders to its root
folder than you did last time. If it does not help, keep reformatting
and decreasing the
number of files/folders in the root folder. If this is unacceptable or if it does not help,
reformat the outer volume and select a larger cluster size. If it does not help, keep
reformatting and increasing the cluster size, until the problem is solved.
Alternatively, try
creating a hidden volume within an NTFS volume.
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