Dec 30 2009
All file systems (including of Windows, like FAT32, NTFS etc.) use a definite cluster size to organize data on the hard disk. The hard disk cluster size is the smallest value of disk space that is allocated to hold a file and is defined at the time of formatting the disk. When you try to change the set cluster size value of hard disk, chances are that the process may affect the boot structures as well. The third-party utilities that claim to safely change the cluster size value can sometimes, bring adverse effects to the Windows boot process. Thus, it is strongly recommended to backup all your data prior to use any utility that draws any direct consequences to your hard disk structures and data. But if you still lose data, you can use a Partition recovery utility to perform data recovery. Partition Recovery
To elaborate such problems, suppose you use a third-party software to change the existing cluster size of your Windows based hard disk. The utility reports successful process completion. But the next time, when you try to boot the computer, it fails and you receive an error message, similar to below:
“A Disk read error occurred. Press Ctrl-Alt-Del to restart”
The data stored on hard disk is inaccessible and you cannot boot the computer even at subsequent attempts.
The described issue can occur due to corruption in hard disk MBR (Master Boot Record). MBR is the first sector read by computer to load the operating system and find disk partitions. The third-party software used in this case can corrupt the MBR.
Boot your computer using Windows installation disc and start command prompt. To fix and rewrite the MBR, you need to run the /fixmbr command.
If this solution doesn’t work and data is still out of access, you are suggested to use a Partition Recovery Software to recover the lost data, however, you can reformat the disk if a good backup is available. Partition Recovery utilities use effective scanning algorithms to analyze the crashed disk and extract the lost data safely.
Stellar Phoenix Windows Data Recovery is a fully-featured data recovery utility designed for Windows 7, Vista, XP, 2003, and 2000 based systems. The advanced Partition Recovery Software is compatible with FAT32, VFAT, NTFS, and NTFS5 file systems. The software has a graphically enriched interface with powerful features, like RAW File Recovery, Disk Cloning, Disk Imaging etc.