TrueCrypt 5.1a yazilimi Acik kaynak kodlu ve ucretsiz bir sifreleme programi olan TrueCrypt'i kullanarak sifreli sanal suruculer olusturabilir, bilgilerinizin guvenligini saglayabilirsiniz. TrueCrypt olusturdugunuz sifreli suruculerle kopyaladiginiz bilgileri bir dosyanin icinde saklar ve bu sayede bilgilerinizi tasinabilir USB bellek ve benzeri aygitlarda guvenle tasiyabilirsiniz. Sifreli dosyayi baska bir sabit diske veya kaynaga kopyala surucuye atamak oldukca kolaydir. TrueCrypt dosyayi her acmak istediginizde size belirlediginiz sifreyi sorarak guvenliginizi saglar. Ayrica gizli surucu olusturma ve klavye kisayollariyla dosyayi surucuye atama gibi ozelliklerde programda mevcut.

TrueCrypt is a software system for establishing and maintaining an on-the-fly-encrypted volume (data storage device). On-the-fly encryption means that data are automatically encrypted or decrypted right before they are loaded or saved, without any user intervention. No data stored on an encrypted volume can be read (decrypted) without using the correct password/keyfile(s) or correct encryption keys. Entire file system is encrypted (e.g., file names, folder names, contents of every file, free space, meta data, etc). Files can be copied to and from a mounted TrueCrypt volume just like they are copied to/from any normal disk (for example, by simple drag-and-drop operations). Files are automatically being decrypted on-the-fly (in memory/RAM) while they are being read or copied from an encrypted TrueCrypt volume. Similarly, files that are being written or copied to the TrueCrypt volume are automatically being encrypted on-the-fly (right before they are written to the disk) in RAM. Note that this does not mean that the whole file that is to be encrypted/decrypted must be stored in RAM before it can be encrypted/decrypted. There are no extra memory (RAM) requirements for TrueCrypt. For an illustration of how this is accomplished, see the following paragraph.

R-Drive Image 4.2 programi Windows XP geri yukleme aracinin bir handikabi da sabit disk uzerinde bir hayli yer kaplamasi olarak gosterilebilir. Bu noktada karsimiza kullanicilara ileri duzeyde secenekler sunan R-Drive Image cikiyor. R-Drive Image, bu versiyonunda ag uzerine boot diskler olusturmaya izin veriyor, yedekleme konusunda sundugu kolayliklari ile dikkati uzerine cekiyor. CD yazma programina ihtiyac duymadan son derece kolay bir islem ile gerek CD'ye, gerekse DVD'ye kayit imkaninin yani sira ag uzerindeki bir konuma yedekleme yapabilmesi gibi geri yukleme isleminin de basit olmasi programin en onemli artilarindan.

R-Drive Image creates disk image files for backup or duplication purposes. Disk image file contains exact, byte-by-byte copy of a hard drive, partition or logical disk and can be created with various compression levels on the fly without stopping Windows OS. Drive image files are stored in a variety of places, including various removable media. Images are restored on the original disks, on any other partitions or even on a hard drive's free space. A special bootable diskette is created to restore system partition. MS Volume Shadow Copy Service (VSS), dynamic disks and BSD slices are supported. To restore only certain files from a disk image, the image is connected as a virtual disk and files are copied directly from the disk image using Windows Explorer or any other file utility. A free 15-day trial version allows verifying all R-Drive Image capabilities except creation and restoration a disk image when R-Drive Image is launched from a bootable floppy disk created by the trial version.