User Manual

User's guide O&O DiskImage Write over unused sectors
Write over unused sectors
You can specify that unused sectors of the source drive be overwritten with zeros under Clone
drive/Cloning options/Advanced/Clear unused sectors from old data. By enabling this
function, you will not be able to restore data of the empty areas from the drive clone.
This function will be run during the next clone activity of the selected drive.
Tip:
If you delete data normally under Windows, it still remains intact on the hard disk. The data will no
longer be accessed by the operating system and remains invisible for the user. The space is declared
as free area by Windows. This data can still be restored using special software. To make sure that
nobody can restore data from the drive clone, enable the function Clear unused sectors from old
data. After overwriting, not even specialized data recovery software will be able to restore this
deleted data.
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