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Windows 7: External Hard drive has changed to RAW file system

31 Oct 2014   #21
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

TestDisk Step By Step - CGSecurity section "NTFS Boot sector recovery". Is Boot sector OK? Backup Boot sector OK? Are they the same?

Recovering An NTFS Boot Sector On An NTFS Partition Using Its Backup

TestDisk can use the backup boot sector to fix a corrupted NTFS boot sector. The primary boot sector is sector zero of the filesystem and the backup NTFS boot sector is located near the end of the filesystem. Even if the boot sector is accidentally overwritten, the backup should be intact. TestDisk checks the boot sector and the backup boot sector. If the boot sector and backup boot sector mismatch, you can
  • restore the NTFS boot sector from its backup (Backup BS) or;
  • update the backup NTFS boot sector with the current boot sector (Org. BS).
Dump can used to display the boot sector content in both hexadecimal and ASCII. If there is no valid boot sector available, TestDisk can still rebuild an NTFS boot sector.
Rebuilding An NTFS Boot Sector On An NTFS Partition

If both NTFS boot sectors are corrupted and you need to rebuild the NTFS boot sector, TestDisk searches the MFT (Master File Table: $MFT) and its backup ($MFTMirr). It reads the MFT record size, it computes the cluster size, and it reads the size of the Index Allocation Entry in the root directory index. Using all these values, TestDisk can provide a new boot sector. Finally it lets the user list the files before writing.
Repair An NTFS MFT

The MFT (Master File Table) is sometimes corrupted. If Microsoft's Checkdisk (chkdsk) failed to repair the MFT, run TestDisk. In the Advanced menu, select your NTFS partition, choose Boot, then Repair MFT. TestDisk will compare the MFT and MFT mirror (its backup). If the MFT is damaged, it will try to repair the MFT using the backup. If the MFT backup is damaged, it will use the main MFT.


My System SpecsSystem Spec
.
31 Oct 2014   #22
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Type=07 so NTFS. All diskpart output is as expected. No problems at all. It even has a drive letter J.
Only problem it is RAW.....
My System SpecsSystem Spec
31 Oct 2014   #23
gd5583

Windows 7 Home Premium 32 bit
 
 

Its the Advanced menu I can't seem to gain access to. Below are the screens I go through in the order I have listed them, the option I chose on each screen is the one highlighted in white.


Attached Images
External Hard drive has changed to RAW file system-testdiska.png External Hard drive has changed to RAW file system-testdiskb.png External Hard drive has changed to RAW file system-testdiskc.png External Hard drive has changed to RAW file system-testdiskd.png 
My System SpecsSystem Spec
.

31 Oct 2014   #24
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Very strange.... never seen that. Maybe try the linux version of testdisk (?) Or post in a testdisk forum
My System SpecsSystem Spec
31 Oct 2014   #25
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Boot to Advanced Boot Options then "repair your computer" then command prompt.

Code:
diskpart
select disk 5
select part 1
detail part
--- only continue if this is the RAW partition? --- 
exit
 
bootsect /nt60  Q:
--- replace Q with actual drive letter of RAW partition found above ---
Post results
My System SpecsSystem Spec
31 Oct 2014   #26
gd5583

Windows 7 Home Premium 32 bit
 
 

When using repair computer command prompt there are no disk partitions to show. When using list disk it looks like my drive becomes disk 1 (disks 2,3,4,5 state no media). I have tried the following:

Disk part
list disk

Disk ### Statuss Size Free Dyn Gpt
Disk 0 Online 931 GB 1116 MB
Disk 1 Online 0 GB 0 GB
Disk 2 No Media 0 GB 0 GB
Disk 3 No Media 0 GB 0 GB
Disk 4 No Media 0 GB 0 GB
Disk 5 No Media 0 GB 0 GB


select disk 1
Disk 1 is now the selected disk

list part
There are no partitions on this disk to show.

Repeated the above for disk 5 and same results occur

Edit if I type select part 1 error appears as follows:

Virtual Disk service error:
The disk is not initialised.
My System SpecsSystem Spec
31 Oct 2014   #27
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Very strange. Still in recovery environment->command prompt:
Code:
dir/s  X:\bootsect.exe
Where is bootsect.exe ? For example in x:\windows\blabla . then
Code:
copy  x:\windows\blabla\bootsect.exe  c:\
Succesfull? If so, boot in win7 normally. Now Elevated Command Prompt then:
Code:
c:\bootsect.exe /nt60  j:  /force
post results
My System SpecsSystem Spec
31 Oct 2014   #28
gd5583

Windows 7 Home Premium 32 bit
 
 

Quote   Quote: Originally Posted by Kaktussoft View Post
Very strange. Still in recovery environment->command prompt:
Code:
dir/s  X:\bootsect.exe
Sorry don't know if I can do screen shots from this mode. The first command brings up the following:

Code:
Volume in drive X is Boot
Volume serial number is D60A-0DC2

Directory of x:\Windows\System32

07/13/2009  05:14 PM  97,280 bootsect.exe
1 file(s) 97,280

Directory of x:\Windows\winsxs\x86_microsoft-windows-winpe_tools_31bf3856ad364e
35_6.1.7600.16385_none_fad5f90498336010

07/13/2009 05:14 PM 97,280 bootsect.exe
2 file(s) 194,560 bytes
0 dir(s) 30,629,888 bytes free
Based on the above, what would I type for 2nd command?
My System SpecsSystem Spec
31 Oct 2014   #29
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Screenshots are impossible in that mode.

Please do:
Code:
copy  x:\Windows\System32\bootsect.exe  c:\
My System SpecsSystem Spec
31 Oct 2014   #30
gd5583

Windows 7 Home Premium 32 bit
 
 

Quote   Quote: Originally Posted by Kaktussoft View Post
Screenshots are impossible in that mode.

Please do:
Code:
copy  x:\Windows\System32\bootsect.exe  c:\
The above worked fine, advised that 1 file successfully copied

Next step in Windows 7 however:


Attached Images
External Hard drive has changed to RAW file system-bootsect.png 
My System SpecsSystem Spec
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 External Hard drive has changed to RAW file system




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