HDD recovery if SATA hard drive uses PATA mode

Sometimes Windows Vista show problems using PATA mode while attached with a SATA hard disk. It results in a system failure and thereby data loss or inaccessibility. In this case , the best way to recover your data from the hard drive is to run any hard drive recovery software. Sometimes, the system crashes causing some file system corruption leading to data loss and inaccessibility.

How to resolve ?
The very first step to resolve the issue is - you must run ScanDisk to try repairing the corruption and check the health of the hard disk.

If the hard disk is accessible, then, below steps will guide you through the process of running ScanDisk from within the Windows:

Go to START, then PROGRAMS, then ACCESSORIES. After that point to SYSTEM TOOLS and within that click on ScanDisk.
Choose the disk or drive on which you want to perform the test.
Select the option THROUGH and then run the ScanDisk.

Following are the steps to guide you to run the ScanDisk from the command prompt, in case the system is not accessible:
Start the system in DOS mode.
Press ENTER after typing the following command:

scandisk

Note: meants the letter of the hard disk you are checking.
Once, the ScanDisk finishes the initial check, it prompts for a surface scan on the drive. Allow it by clicking on YES or press ENTER.

If the above processes fail to fix the errors, then your data remains inaccessible and you have to restore the same from your backup server. But unfortunately if your backup also get fail then hard drive recovery software can recover your data back.