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 Otherwise you would eventually get outdated data on your disk.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. --------------------------------------------------------------------------------

Snapshot - Remote Backup -------------------------------------------------------------------------------- As a System administrator, keeping disk images for many computers current can be quite time consuming. Due to Drive Snapshot's easy command line interface, this can be done much more easily. Using RLOGIN/RCONSOLE from the Windows NT Resource pack, or the ingenious PSEXEC utility from Sysinternals, you can easily automate this process, or control it from your own working place. Example for PSEXEC: C::\>PSEXEC \\userComputer -u administrator -p AdminPasswd -c -f -h c:\Programme\snapshot\Snapshot.exe C: \\Server\Backup\user\C-drive.SNA This will: login to the computer 'Usercomputer' as an administrator (required); copy Snapshot.exe to the other computer, and start a backup of the C:-drive to some space on your \\Server. Please see PSEXEC documentation for more details. Note: when backing up a Vista or Windows 7 computer, please use -h If the target system is Vista or higher, has the process run with the account's elevated token, if available. Otherwise you will get a UAC (User Account Control) prompt that no one is able to answer.

Snapshot - command line options Well - having a nice Windows interface is a fine thing - unless you want to automate certain things, which often is sheer impossible with all this Windows wizardry, often requiring dozens of clicks to accomplish even trivial tasks - just try to automate a Backup of your data with your favourite CD-ROM burning program. Drive Snapshot has a very easy command line interface: Backup Drive to file C:\> SNAPSHOT C: X:\C-Drive.sna this will backup the C: drive to X:\C-Drive.SNA. To save several Volumes, simply create a Batch file like SNAPSHOT C: \\Server\Backups\C-Drive.sna SNAPSHOT D: \\Server\Backups\D-Drive.sna SNAPSHOT E: \\Server\Backups\E-Drive.sna This will backup C:, D:, E: to your server.. Option -L650 Most of the time, it's sensible to limit the size of a single image file to some maximum value, so it can be written to a CD-ROM. The default maximum size is 650MB; you can change this with the -L parameter. To avoid trouble with DOS when restoring your drives, you should keep this below 2 GB. Option -Ssize Equivalent to Bytemode of Advanced Options. -S0 -- always use Bytemode. -S8192 -- use Bytemode, if clustersize is >= 8192 -S100000 -- never use Bytemode (default) Option -R [empty Recycle bin ] This will empty the Recycle Bin for this drive before starting the backup. Option -W [Wait] If the cursor is in the top left corner at the time of start, Snapshot assumes it has been started from a batchfile, and waits for the key at end, so you can control the execution. This is probably unwanted, if it was started from the scheduler. This WaitForAnyKey can be suppressed with -W. Option -G [Graphical] For those who have created a shortcut to a customized Snapshot command, but still want to see a graphical progress. Useful if you have configured a shortcut or similar for automatic backup, telling the user 'Click here to backup your drive'. It has a few sub modes like -G show progress, wait for user to click [exit] when done -Go show progress, exit when done if everything worked, else tell him so -Gx show progress, always exit when done Option -T [Test] You can request a test of the image for validity, after it has been created. This will completely reread the image and check its consistency, checksums,... However (in particular in batchfiles) it's probably better to test the image separately ;like snapshot x:\image.sna -T so you can know whether a failure was due to the destination server being down, or 'unreliable data written'. Any failure will be returned as Errorlevel > 0. Differential Backups please see differential.htm for detail Set a Default Password from command line -PW=MySuperSecretPassword This password will be used for backup, restore, and mount from now on. Restore and mount will ask for the password, should it be needed. Restoring a Volume C:\> SNAPSHOT X:\D-Drive.sna D: restores the D: drive from X:\D-Drive.sna. This will overwrite all data on the D: drive !! The limitations are identical to the normal Snapshot Restore. Setting the password from the command line From the command line, you can set the password with -PW= C:>Snapshot C: X:\Backup\c-drive.sna -PW=SuperSecret This overrides a default password for this command only. If you have a default password, and don't set one from the command line, the default is used. If you have a default, but nevertheless don't want your image encrypted, you have to indicate an empty password: C:>Snapshot C: X:\Backup\c-drive.sna -PW= Excluding files/directories from backup In some cases it can be useful to exclude some files or directories from backup. That's always the case for (and is always done automagically) for PAGEFILE.SYS and HIBERFIL.SYS, but can also be useful for temporary files, big movie archives (which you have on the bought DVD anyway and similar stuff. Due to technical reasons, the data in excluded files are not saved, but the directory entries ARE saved. Therefore, both when viewing the backup, and after restoring, the files *look* intact, but contain all zero's (when viewing) or random data (after restore). For this reason, the image contains a fresh created Batch job 'SnapshotDeleteAfterRestore.BAT'. After restore it should be executed to avoid possible confusion (it will delete all unsaved files). Files and directories can be excluded by --exclude:\Temp --exclude:\Temp\* (which is equivalent) --exclude:\Windows\Memory.dmp options can be concatenated with commas like --exclude:\Temp,\Windows\Memory.dmp,\Windows\Minidump\*,"\Documents and Settings" ,"\Program Files",\Windows\$NtUninstall* (1.38) Note: \temp and \temp\* are equivalent Spaces in Filenames have to be enclosed by `"` Subdirectories are also always excluded. Creation of filenames with date, weekday, ... Some 'magic' strings in the command line are replaced with the data, computer name, disk, etc. So it makes sense to c:\>snapshot C: \\server\backups\$computername\$DISK-$DATE.sna $date Date 6-digit YYMMDD $computername Computer name $type for differential Images --> 'dif' $disk the drive letter (C,D,...) $weekday weekday, 2 letters $year year (4 digits) $month month (1..12) $day day in month (1..31) Mount a disk Image as virtual drive C:\> SNAPSHOT X:\C-Drive.sna Z: -V mounts the image X:\C-Drive.SNA as drive Z: with a couple of variants: -VM just mount the image, don't start Explorer to be used in batch files -VQ Z: mounts the volume, doesn't show any dialog -!unmount:Z unmount Z: -!unmount unmount all mounted drives (from 1.38) Snapshot should be started with 'start' like start Snapshot x:\image.bat Z: -vq xcopy z:\Data c:\Data Snapshot -!unmount:Z Drive Snapshot 1.39 supports additionally File Extensions --exclude:"\*.MP3,\*.TMP" works as expected [1.39]reparing damaged images Unfortunately, images can be damaged. Some image sub-files may be missing or unreadable, data may be damaged, etc., and the image isn't mountable any longer. As a disk image, this is useless as you will never know what data are missing. But often all you need is a few files from the image. If the .SNA file is existing, c:>snapshot x:\DAMAGED.SNA --repair:Y:\REPAIRED.SNA will try to reconstruct something mountable; at least after running CHKDSK over the virtual drive you should be able to retrieve some data. [1.39]Migration on different hardware If you restore using VistaPE/BartPE, running c:>snapshot --AddDriver will ask you for the driver to be installed, and the location of the (restored) Windows, and install this driver as an additional disk driver more special Options snapshot --? shows all (documented ;) special commands --unmount - unmount all virtual disks and terminate snapshot started with -VQ --unmount:Z - unmount virtual disk Z --resize X: - show possible resize range for drive X: --resize X: 1000 - (try to) resize drive X: to 1000 MB --resizepart X: 1000 - (try to) grow partition and filesystem to 1000 MB resizepart is unable to shrink partitions or filesystems! --exec:RestartExchange.Bat --exec:"NET START ORACLE" - execute commands as soon as backup really started MUST be the last option on the command line! --ClearSignature HD1 --SetSignature HD1 01234567 --Checkboot HD1 - test if HD1 seems to be bootable --Activate X: set active flag for drive X: --Deactivate X: clear active flag for drive X: --RestoreMBR HD1 filename - writes the MBR from filename to HD1 --RestorePartitionStructure HD1 filename - writes the partition information from filename to HD1 --exclude:filename1,filename2,... excludes all given filenames from backup --exclude:@filename.txt exclude from file filename.txt --LogFile:filename.log - append log output to file filename.log --DontLogStdout - don't write VSS log output to standard output --DontLogProgress - don't write the progress report lines to stderr --novss - don't use the volume shadow service (more about VSS) --usevss - use the volume shadow service if available --forcevss - use the volume shadow service. If not available exit with error. --register:License.lic - register snapshot --setdefaultpwd=MyPassword - sets the default password to MyPassword --SearchFull:path1,path2,path3 while working with differential images search the full image in the given path. --------------------------------------------------------------------------------

Snapshot - Restoring a volume from Dos Quick steps Boot your system from a DOS boot disk. Below it is assumed that your image data are accessible as drive W:\C-DRIVE.SNA. If you want to (or have to) repartition your drive, because it is new or completely damaged, enter: A:>SNAPSHOT RESTORE HD1 partitionstructure W:\C-DRIVE.SNA -Y This will partition the whole drive (HD1) in exactly the same way as your original drive. You don't need to do that, and shouldn't do it, if you only want to restore a single, damaged volume. A:>SNAPSHOT RESTORE HD1 auto W:\C-DRIVE.SNA -Y -V This restores all data in the automatically selected partition from the image saved on C-drive, will not ask for confirmation (-Y), and will verify that all data were indeed written correctly (-V). Details Boot your system (from a DOS bootdisk) If you don't have a DOS bootdisk available, here is more information on how to create one. When restoring a partition, all data on it will be deleted and replaced by the data at the time of the backup. If you think you need some of the data, you have to copy them to somewhere else before restoring the image. After the restore, the system will be identical to the time you created the image. To restore an image, the imagefile must be accessible to DOS (you must be able to say C:>DIR); for more information about how to access a file on CDROM, Network, or local NTFS click here. actions to be performed show information about the hard disk's partition structure show information about the Image file restore the partition structure restore the partition data test image file for internal consistency (optional) restore Master Boot Sector (MBR) (rarely needed) show information about the hard disk's partition structure snapshot.exe show [HDx] [HDx]: number of hard disk, HD1 is the first hard disk A:>SNAPSHOT SHOW HD1 SNAPSHOT for DOS V1.21 [Feb 27 2003] Copyright (c) tom ehlert 1 hard disk(s) detected disk 1 - 1022 cylinders, 255 heads, 63 sectors, 512 byte total physical size 29314 MB Primary partitions start - end : start, size 1:06 FAT16 CHS 0 1 1- 129 254 63 : 0MB, 1020MB 2:05 extended Part. CHS 130 0 1- 2 254 63 : 1019MB, 7037MB 3:07 NTFS inst FS CHS 3 0 1- 249 254 63 : 8056MB, 18003MB 4:0C FAT32 LBA CHS 250 0 1- 663 254 63 : 26058MB, 3248MB Logical partitions 1:06 FAT16 CHS 130 1 1- 194 254 63 : 1019MB, 510MB 2:06 FAT16 CHS 195 1 1- 324 254 63 : 1529MB, 1020MB 3:06 FAT16 CHS 439 1 1- 568 254 63 : 3443MB, 1020MB 4:07 NTFS inst FS CHS 569 1 1-1014 254 63 : 4463MB, 3499MB 5:07 NTFS inst FS CHS 1015 1 1-1015 254 63 : 7961MB, 8MB 6:04 FAT16 < 32MB CHS 1016 1 1-1019 254 63 : 7969MB, 32MB highest used sector on disk 60018840 (29307 MB) show information about the Image file snapshot.exe show imagefile imagefile: path and name of the image file This shows information about the saved volume as it was stored at backup time. Additionally, the partition structure of the original disk is shown. A:>snapshot show x:\c-drive.sna Information about the saved volume from Computer 'TP', drive C:, Label 'C-TP ', Filesystem FAT (06) Hard disk 1 Primary Partition 1- size 2.097.393.664 =1999MB total size 1999 MB - 420 MB free - 32768 Bytes per cluster disk 1 - 1222 cylinders, 255 heads, 63 sectors, 512 byte total physical size 9585 MB Primary partitions start - end : start, size 1:06 FAT16 CHS 0 1 1- 254 254 63 : 0MB, 2001MB 2:0F extended Part CHS 255 0 1-1023 254 63 : 2000MB, 7586MB Logical partitions 1:07 NTFS inst FS CHS 255 1 1- 514 254 63 : 2000MB, 2040MB 2:06 FAT16 CHS 515 1 1- 641 254 63 : 4039MB, 997MB 3:07 NTFS inst FS CHS 642 1 1-1023 254 63 : 5036MB, 2997MB 4:07 NTFS inst FS CHS 1023 1 1-1023 254 63 : 8032MB, 1554MB highest used sector on disk 19631430 (9586 MB) restore the partition structure This is required, if your disk is new (not partitioned), or partitioned differently. Snapshot will restore the exact partitioning of the original disk. The necessary information is available in each Snapshot image file. If for some reason you want to partition the disk in a different way, you have to use FDISK or similar tools. Note: for this to work it is necessary, that the new disk is at least as large as the partitioned area on the original disk; Snapshot will not modify the partition information in any way. A:>snapshot restore [HDx] partitionstructure imagefile [HDx]: Number of hard disk, starting with HD1 [imagefile]: Path and name of Image file restore the partition data The real restore action. This will overwrite all data on this partition and replace it with the original data. After that, the partition is identical to the original state. snapshot.exe restore [HDx] {auto/primary#/logical#} imagefile [HDx]: Number of hard disk {auto/primary#/logical#}: automatically select the destination partition, or force a primary or logical partition to be restored [imagefile]: Path and name of image file AUTO - PRIMARY1 - LOGICAL5 Snapshot knows which partition is contained in the image file; option 'AUTO' will use this partition as the destination. Should you want to restore a different partition, you may select this by PRIMARY1 or LOGICAL2. Please use the SHOW command first to verify what partition you want to restore. option -V ( Verify) this will cause a verification run after the restore is completed, to verify that all data are readable and correct. You may abort the verification at any time by pressing Ctrl-C. Parameter -Y (Yes) -Y (YES) will skip the 'are you really sure' question. the command to automatically restore the C-drive from network drive W: should look similar to: A:\>snapshot.exe restore HD1 auto W:\c.drive.sna -Y -V test image file for internal consistency A:>snapshot test X:C-DRIVE.SNA this reads the complete image file, and verifies readability and consistency. This is useful, if you want to make sure, for example, that all your CDROM is readable before starting the restore. restore Master Boot Sector (MBR) This is rarely needed, but useful if some software installed a different boot loader in the MBR. It will restore the very first sector on the disk. A:>snapshot.exe restore HD1 MBR W:\c.drive.sna

Disk Image Restore 1 2 3 -------------------------------------------------------------------------------- Screenshots Drive Snapshot can restore a drive completely to its former state. If you restore a drive, all current data on the drive will be lost !! Proceed as follows: First, you select the disk image file to be restored. To aid you, all known properties about the image at creation time are shown. After selecting the image, please click [Next]

Snapshot - DiskImage Restore for Windows NT/2000/XP Test the Snapshot Userinterface Obviously, a disk image program would be of little value without a restore. Snapshot does restore disk images, but has some limitations. However, these are the same limitations that apply to FORMAT and CHKDSK, which result from the fact that WinNT won't allow access to open files. So most important, the system drive and all drives with a PAGEFILE cannot be restored while WinNT is running. To restore a System Volume you have to use DOS restore. All other volumes can be restored from WinNT. See some Screenshots of a restore operation.

Exploring the created Snapshot disk image is extremely simple and powerful : use the normal Windows explorer - or any other program you like. Snapshot achieves this by creating a virtual drive - like W: - usable by any Windows program. This virtual drive can be used by the normal Windows Explorer. Here are Screenshots how to view a saved disk image. Main use: You can view/compare files without restoring them first. First you have to select the disk image you want to explore. You see some information about the saved disk at the time of Backup to help you to find the right image, should there be more than one. Additionally, you may choose the drive letter the virtual drive shall have; Drive Snapshot will automatically use the highest drive letter available (Z:). Click Map and Explore Virtual Drive to mount the drive and start the Windows Explorer on the drive. Click Map Virtual Drive to mount the drive only without starting Windows Explorer. Partial Restore You can do a partial Restore, simply by dragging and dropping files with Windows Explorer. And, since it's a virtual drive, the image can be used by any other Windows/DOS program, not just an 'explorer like' browser. Simply use the tools you like most to view/compare/restore files. When viewing a saved NTFS partition, the virtual drive will have exactly the same security attributes, owner ship, compressed state, encrypted state,... as the original disk. Performance Snapshot virtual disk has performance similar to a real disk. Depending on the conditions, expect 50-120% of the speed of the real disk (yes, sometimes it's faster:-). For instance, Win2K backup will back up my Win2K System disk in 7:43; while saving the same drive as a virtual disk takes 10:28, or about 35% slower. Most important - it will never feel slow.

1. Select the Volume to be saved For each Partition, you see detailed Information. Select the Drive you want to back up, then click Next Drive The usual Windows drive letter (C:, D:,...) HD (HardDisk) The hard disk, which hosts this drive (in case you have more then one hard disk). PartNo The Partition number and type, primary or logical PartStart The Partition's location on the physical disk PartSize ... and its size P... (Partitionstyp) Label the volume's name FS (FileSystem) is usually FAT16, FAT32, or NTFS Size The size in the Partition that is used by the file system, regardless of how full the file system is. Usually, it's slightly smaller then the Partsize above, and can never be larger. However it's entirely legal to have a logical, used size much smaller then the available space in the partition. Used The amount of used data, that will have to be saved Free free space .

Snapshot - DiskImage Backup for Windows NT Screenshots Snapshot is easy to use The Snapshot user interface is Windows Wizard-like with few surprises, even to inexperienced users. Anything with a drive letter (like C:, E:) can be backuped. Anything with a drive letter (like X:) can be used for the image destination. See some Screenshots of a backup operation. Snapshot can be used often For DOS based image backup, the user has to stop his work, boot into a different configuration, wait for the backup to finish, then boot Windows again. With Snapshot, there is no need to reboot. Simply start Snapshot, then continue to work normally. This enables one of the most important things in backup business: backup often It is even possible to make image backup for servers, that must be online 24 hours a day. Snapshot is safe to use The problem with Windows based disk imaging is that Windows may constantly write to the disk, even with no user interaction. As the image creation takes some time, you may end up with a disk image that partially reflects the disk status at program start, partially at a later time. Snapshot handles this. Once Snapshot has been started, you may continue to work, delete anything on the disk, install new programs,... The created image will always reflect the disk status at program start. Compatible Snapshot is compatible with Windows NT 4.0, 2000, XP, 2003, Vista, 2003, 7, 2008, 2008 R2, PE, x64 all file systems supported by WinNT/Win2K (FAT16,FAT32,NTFS). Linux Ext2/Ext3/Ext4/Reiser (but no explore possible) any IDE/SCSI/USB/...local disk drive. If WinNT can access it, Snapshot will back it up. any disk mirroring/striping/spanning/RAID scheme. Windows 2000 basic and dynamic disks. Fast and efficient Both speed and image size are data and configuration dependent. In short: Snapshot saves about 400 MB/min on a P700, and ~1,5 GB/min on a P4 4GHz. The compressed image size is comparable to the best other DOS-based disk imaging products. More of detailed performance data can he found here. How it works Any disk image program takes some time to run. Depending on computer speed and disk size, this take a few minutes to a few hours. So a 1GB disk on a P200 will take ~10 minutes to store, and ~1 minute on a P4 4GHz. As WinXX constantly writes to the disk, what do you get? SnapShot takes the image at a certain point of time. When SnapShot gets started, it will take some time to collect information about the disk to be saved, such as disk size, used disk space,... Then the OS is instructed to write all data from the disk caches. And then, Snapshot takes the SnapShot. All you will get in your Disk Image is what is at this very moment on your disk. What's on the disk is saved; nothing else. If you would POWER OFF the computer at this moment and make the image from DOS, you would get exactly the same. Because we flushed all data to the disk, Windows will boot without CHKDSK, because the data on the disk are consistent. You would lose the changes of any open (unsaved) files, of course, but the original would be exist and be valid. The magic The idea is simple: By using WindowsNT Driver technology, Snapshot chains itself between the file system and the disk driver so that it will see any request to the disk. When any WRITE request is detected, before the data are saved, the data are read first from the disk and saved, before the WRITE request is allowed to proceed. So the data are completely safe against change; and this allows the user to work while Snapshot is running and no changes will be reflected in the image produced. Whatever happens, the image will contain the disk data at start time. You may work as usual, clean up the disk, install/uninstall Software, or even catch a virus of his choice. SnapShot even tries to minimize its influence on other programs. Snapshot uses about 7MB of memory during Backup, 0 bytes when not activ. Snapshot runs at low priority, giving the foreground application as many CPU cycles as needed. As SnapShot uses a huge amount of disk IO (~40 MB/sec for a Pentium IV 3 GHz), Snapshot would bring down a typical Windows program start to a crawl. So Snapshot watches for any user disk activity and will pause for a short while, so the user application runs at nearly full speed. However, SnapShot still makes sure that no unsaved data are overwritten. In this case, SnapShot will buffer these data up to a few Megabytes in memory, and then simply delay the application, until these data have been saved to the SnapShot destination. This won't happen often, as applications tend to modify the same data over and over again, like a database's index files. These data will be saved the first time a change is detected and later requests will proceed at normal speed.

Snapshot - DiskImaging for Windows NT/2000/XP/2003 Test the Snapshot Userinterface SnapShot is disk imaging software that enables the user to back up, restore and view backed up hard disk data, easily and safely. Using WindowsNT driver technology, Snapshot brings two new features to disk imaging: 1. Snapshot Backup - create disk images while Windows is running This allows the user to work in his usual environment when backing up his data. Any device suitable for file storage can be used for the image destination, like your local drive, a network drive or any removable drive And - most important - the image will be an industrial quality image, even though WinNT constantly writes to the disk. The user may continue to work normally, while a backup operation is in progress; the image will still be valid and consistent. This enables one of the most important things in backup business: backup often It is even possible to make an image backup for servers, that must be online 24 hours a day. More details about Snapshot Backup Snapshot Backup - Main use Snapshot Backup is aimed at the backup/disaster recovery market. There is little use for on the fly disk image creation, if you want to deploy hundreds or thousands of workstations. We think however, that the possibility to do on the fly backup is very important for the end user to regularly protect his data. At least, this was our reason to create Snapshot. No need to shut down and boot from floppy, no need to create network disks, and no need to wait half an hour for the backup process - we think that's nice. 2. Snapshot View - Explore saved disk images the friendly way The image file is presented to the user as a virtual drive. This virtual drive can be used like any other drive, using any Windows program, be it Explorer, Norton Commander, or your favourite MP3 Player. More details about Snapshot Image Explorer Snapshot View - Main use Snapshot View is a very easy and powerful method to explore disk images. This technique could be easily adapted to disk images created by other disk imaging programs. Compatibility SnapShot works on WinNT4, Win2000, WinXP and 2003 Server. You need administrative rights to use Snapshot.

SCHEDULER - Geplante Tasks more Tips Instead of developing yet another scheduler, we prefer to use the built-in Windows Scheduler; that's one less thing to worry about. Usage Win2000/WindowsXP (for WinNT4, use AT/WinAT): Start -> Settings-> Control Panel-> Scheduled Tasks-> Add scheduled Task Start->Settings->Control Panel->Scheduled Tasks->Add scheduled Task [Browse] and insert "C:\Program Files\Snapshot\Snapshot.exe" (*) weekly and [*] Monday [*] Friday und enter a user name that has administrative rights on the local machine, and possibly can access (with this account) a network server. [*] advanced properties, and [finish] in the following dialog, enter: either [start] 'c:\programs\snapshot\SNAPSHOT.exe C: X:\C-DRIVE.SNA or (much more powerful and flexible) [start] 'cmd /c c:/programs/snapshot/SuperDuperBackup.BAT'' more Tips