heads/cylinders mismatches 251 <NTFS> ! = 255 <HD>

How to use TestDisk to recover lost partition
Forum rules
When asking for technical support:
- Search for posts on the same topic before posting a new question.
- Give clear, specific information in the title of your post.
- Include as many details as you can, MOST POSTS WILL GET ONLY ONE OR TWO ANSWERS.
- Post a follow up with a "Thank you" or "This worked!"
- When you learn something, use that knowledge to HELP ANOTHER USER LATER.
Before posting, please read https://www.cgsecurity.org/testdisk.pdf
Posts: 1
Joined: 18 Aug 2016, 14:18

heads/cylinders mismatches 251 <NTFS> ! = 255 <HD>

#1 Post by raguilo »

My WD 3Tb My book went RAW overnight. Have not reformated.
When I select this HDD in Test Disk 7.1 I get:
heads/cylinders mismatches 251 <NTFS> ! = 255 <HD>

I'm 65yrs old, don't understand this and I'm stumped. Please help?

What I have:
WD My Book 3Tb
Windows 7
Test Disk 7.1

Sponsored links

User avatar
Site Admin
Posts: 5307
Joined: 18 Feb 2012, 15:08
Location: Le Perreux Sur Marne, France

Re: heads/cylinders mismatches 251 <NTFS> ! = 255 <HD>

#2 Post by cgrenier »

Run TestDisk, select the disk, confirm the partition table type, go in the Advanced menu, select the partition, choose, Boot, RebuildBS, List.
If you can see your files, choose confirm, Write, Quit and restart your computer.