While trying to repartition the hard drive, I accidentally deleted one of the NTFS partitions from my Western Digital hard drive. I have stored many folders that contain important files in this drive. Those files are crucial to my work and I need them back. Is there any way to recover the deleted partition and the data stored in it? The operating system I use is Windows XP.
Do not worry. You can recover deleted partitions and data from a hard drive using Windows Data Recovery. This hard drive recovery software with the most advanced scanning algorithm traces and recovers deleted partitions and data from hard drive quickly.
Though deleted data can be recovered from the hard drive, if you use the hard drive further to create and store data, after deleting the partitions, the chances of deleted data getting overwritten is very high. Once the data is overwritten, it is not possible to recover deleted data using data recovery software.
Hence for best recovery results:
Windows Data Recovery software is capable of retrieving data lost from hard drives, external hard drives, IDE/AT, SATA/SCSI hard drives, flash drives and from all types of memory cards. The software supports recovery of data from hard drives by popular brands including Seagate, Western Digital, Maxtor, Toshiba, Samsung, Hitachi and many more.
Windows Data Recovery Software is capable of recovering data from Windows Vista, Windows XP and Windows 7. The software is read-only and does not damage your hard drive. Handy features such as disk imaging, disk cloning and disk cloning helps in recovery data from hard drives with bad sectors and in quick recovery of deleted files. For recovering data from FAT file system you can use FAT Data Recovery.
Screen shots:

Step 1 : Main Window

Step 2 : Select Partition Recovery

Step 3: Select Physical Drive

Step 4 : Select Logical Drive
Step 5: Select File Type

Step 6: View Recovered Data