# Snapshot Backup - FAQ

#### How can I verify that Snapshot did what it claimed - backup all my data

> The easiest and fastest way:

> Backup a drive.
> Map the drive as virtual drive.
> Use WINDIFF or similar file compare tools to compare the two drives; they should be identical.

> You will see differences, because WINDIFF will not be able to open the PAGEFILE or registry files on the original drive; but that's not SNAPSHOT's fault.
> For these files you have to trust us (of course we tested this, using slightly more complicated setup's)

#### Do I have to shut down all Windows programs (highly recommended)

> No.
> It's probably a good idea to save your open files before starting Snapshot Backup.
> Otherwise you would eventually get outdated data on your disk.
> After Snapshot has started you may continue to work normally, the image will reflect the data at start time.

#### May I install a new VIRUS, while Snapshot is running?

> Yes.
> It won't make you happy, but Snapshot won't care.
> The created image will not contain any sign of a virus, ready to be restored.

#### May I FORMAT/FDISK the disk that is currently being Snapshot'ed?

> No.
> It is not possible to run programs that access the disk directly while Snapshot is running.

#### What File systems does Snapshot support?

> SnapShot relies mostly on the operating system to support a drive.
> All file systems known to Windows(FAT16, FAT32, NTFS) are supported; additionally some LINUX file systems (EXT2,EXT3,Reiser) are 'manually' supported.
> Other file system are stored completely, ignoring any free space information.

#### Does Snapshot support enhanced NTFS features like encryption, security, hard and symbolic links, mount points, multiple data streams, extended attributes,quota,...

> Yes.
> Snapshot is sector-oriented.
> Snapshot will backup all sectors relevant for the file system, and restore them exactly the same way.
> Snapshot never interprets these data on its own, the interpretation of these data is up to the file system.
> Snapshot only provides the necessary data.
> The same is true for the Image Viewer.

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