cgsecurity.org

Hello guys.
I was checking what's testdisk can do, and in a really no sense way I modified one partition. Actually my disk is not working anymore, but I still have the log of testdisk. Someone can suggest me the way to undo the changes I did? I hope there is one way having the log.
Thank you!!

Before beginning keep a backup of the old testdisk.log file.
If you have modified the partition table, you can restore the old values by choose Analyse, Quick Search and if necessary, manually add ('a' key) the missing partitions.
Use the arrow keys to set the partitions to P(rimary), *(bootable) or L(ogical). Once the partition table match what is written in the old testdisk.log file, go on next screen, and choose Write, confirm, Quit.

Thank you about your fast tutorial