Solved Windows lost partition letter and don't recognize format partition

JustBe

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Hi,

I have a question.

I formatted a partition of my harddrive but in the end not only a partition was formatted but the next partition also was gone.

Meaning: the data is still there, but the NTFS partition isn't recognised anymore by Windows, and in diskmanager the space is now ready to assign new partition.

In a data recovery software, I saw the not recognised partition was still recognised as 'NTFS'.

What can I do?

The best scenario would be to simply tell Windows somehow, there is partition with NTFS and it should assign a letter to it.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Sure
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Sure, (it's in dutch however).
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Sure, (it's in dutch however).

I formatted partition F. Then I lost my partition D (the partition of 320 Gb): No partition letter, not recognisation anymore of format.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Boot into "recovery environment" so F8 on boot and select "repair computer". After that select "command prompt".
DISKPART
SELECT DISK 0
LIST PART

Is ghost partition visible? Please post output
(I live in The Neteherlands as well)
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
The recovery software you used showed it still as NTFS??? Sure it was just a simple ntfs partion. Or was it hidden, deleted or whatever?
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
This is what I get from using cmd command within Windows
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Sure, (it's in dutch however).

I formatted partition F. Then I lost my partition D (the partition of 320 Gb): No partition letter, not recognisation anymore of format.

Looking at your screenshot, F: was partition 1, D: was partition 2 of a Logical drive.
Do you have data to save in D:?
 

My Computer My Computer

OS
ME/XP/Vista/Win7

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Sure, (it's in dutch however).

I formatted partition F. Then I lost my partition D (the partition of 320 Gb): No partition letter, not recognisation anymore of format.

Looking at your screenshot, F: was partition 1, D: was partition 2 of a Logical drive.
Do you have data to save in D:?

D: was my 'data' partition. On F: I had another Windows installation.
C: is my windows installation, and there is one other partition where the OEM Windows is coming from.

Formatting the whole partition again might be not such a problem. I have backed up most important data.

But I prefer a solution where I can just have access again to the partition somehow. I don't have to think so hard then, if I have forgotten something.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
So Partition 0 Extended (Uitgebreid) is the problem. Was it always extended or was it a primary partition? BTW I think the recovery software saw this extented partition as well. Or are you very sure it sees a logical partition within this extended partition?
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
Partition Wizard actually does see my old partition.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
partition wizard has also a windows version. So if your CD-drive has broken simply try the windows version
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
Allright!

Partition works again.

Thanks, for super fast support, Theog & Kaktussoft!

Partition Wizard found data and after a restart my windows explorer could find the partition again as well.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Partition Wizard actually does see my old partition.
The screenshot you posted is very normal. Was this the screenshot you got when starting PW normally? Or did you perform a partition recovery?
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
I did make a recovery. Then it had to apply the pending actions. After a reboot of the computer, I could access the partition again.
 

My Computer My Computer

OS
Windows 7 Home Premium 64 bit
Great you solved the problem. It seems you did delete partition by accident.
 

My Computer My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
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