Data recovery after OS failure
Despite constantly improving reliability of operating systems users still sometimes experience operating system failures. An operating system may fail due to corruption of OS logical structures (caused either by computer viruses or human errors) or damage of a storage where the OS is installed (caused by hardware failures, system breakdowns, immediate power failure resulting in file system structures corruption). Corrupted operating system is unable to boot. A failed operating system will attempt to start and may progress to a certain point, freeze and not boot any further. It may attempt to boot and then stop with a blue screen or an error message as well. But if the computer goes to a black screen very quickly with an "Invalid System Disk" or "Please Insert Bootable Media" message, particularly if the machine doesn't report the presence of the hard disk drive, then the issue is a failed disk, not a failed operating system. In this case it's strongly recommended to have the disk examined by specialists for a conclusion on possibility to recover lost data.
If you're facing operating system failure, access to your data can be achieved by either of two possible methods. You can connect the hard drive to another computer in a way described in the article
"How to: Connect IDE/SATA drive to a recovery PC" or use
UFS Explorer Backup and Emergency Recovery CD
to boot your computer. If you open the hard drive and the data it contains are intact, you may simply copy your files to a safer data storage. If files were damaged or lost, they can be retrieved with an efficient recovery software. SysDev Laboratories offer UFS Explorer software with effective mechanisms for the search for lost or corrupted files on a failed operating system. Supporting a great variety of operating systems and working with a wide range of file systems the software is a universal solution for recovery of lost files from any operating system.