hi i use a seagate desktop external harddrive.i use windows 7 ultimate OS but my external harddrive is now inaccessible.it gives a drive letter in the my computer console and gives a dialog box saying "you need to format this partition first to use it".i have 4 partitions on the harddrive and all of them are inaccessible.can my drive be repaired or its now jus a matter of recovering my data.have tried all sorts of tricks.have gone to disk mgnt to try to change permissions and ownership bt it gives an error.have tried converting file system from raw to ntfs through command prompt but it says option not available for raw file systems.have tried chkdsk in cmd prompt and it says access denied.help plizz
Go try a partition recovery tool called Vimx Partition Recovery. It is designed to process different partition recovery problems, including recovering the inner data and the partition itself. Perhaps, you can try it to take a chance: http://www.vimxsoft.com/partition-recovery/
Hope this helps.
You may try a professional partition recovery tool called Partition Data Recovery Software that specializes in recovering partition data from a deleted partition, formatted partition, corrupted partition and other problem partition.
1. Do not store any new data on this drive to avoid the original data overwritten by new data, which can make it gone forever.
2. Do not save the recovered data on the same drive in case of recovery failure.
3. Do not forget to back up your important data before you do any change to it in the future.