NTFS Partition boot sector keeps getting corrupted

How to use TestDisk to recover lost partition
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TheFox
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Joined: 17 Feb 2013, 19:38

NTFS Partition boot sector keeps getting corrupted

#1 Post by TheFox » 17 Feb 2013, 19:54

Hey,
I recently had some issue with my NTFS partition that led to my NTFS boot sector to get corrupted.
The partition is very large (~6TB) and consists of 4xSamsung F4EG 2TB in Raid5 connected to Perc 6/i Raid controller.

When the partition is lost, I can repair it using testidsk in the following way.
When I enter Windows (W7 x64) Disk Mangament, I get a wizard and then I init the drive to GPT.
I then convert it to a basic volume, assign a letter but do not format it.
At this point, the partition is at the right size but set to "RAW".

Now I run testdisk, choose the drive, select [EFI GPT] ->[Advanced], I get 2 options:
Disk /dev/sdb - 5999 GB / 5587 GiB - CHS 729401 255 63

Partition Start End Size in sectors
1 P MS Reserved 34 262177 262144 [Microsoft reserved partition]
> 2 P MS Data 264192 11717834751 11717570560 [Basic data partition] [Data]


I choose "2 P Ms Data", then select Type->Ms Data->NTFS.
Now I go to Boot menu and see that "Boot Sector" is bad and "Backup boot sector" is good and I choose to load the Backup boot sector instead of the main one.

After a few seconds, the partition is back and recognized as NTFS and all is good.

The weird thing is that somehow it keeps getting back to that corrupted state and I don't know how or why :?: :roll:
My array is healthy, I ran disk check and didn't find any issues so I am kind of out of ideas right now.

Any ideas ?

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