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Windows 7: Hard drive installed, shows in Drive Mngmnt, in Bios, but not in Comp.

03 Jul 2014   #11
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Yeah right. The partitions on Drive1 do not have a single drive letter. So they are 'hidden' and cannot be seen in Computer. Do what Gary and Steve suggest and you'll be OK.


My System SpecsSystem Spec
.
03 Jul 2014   #12
Slartybart

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
 
 

follow essenbe's request for Diskpart information - but select each disk in list disk and show the details.
lis dis
sel dis 0
det dis

sel dis 1
det dis

etc.

This is a strange disk setup. Please provide more information on the machine (Make and model).
The first disk has an special OEM part and the recovery partition is active which is probably ok
the second disk has the special efi part

It looks to me as a incomplete or failed UEFI install. - not sure though.

Dumhed, please give us some history on the machine and disks.
What exactly do you mean by I have also cleared the mounted drives via registry and reset

Also, please add your SF Systems Specs by following this tutorial: System Info - See Your System Specs
  • In the System Manufacturer/Model Number field, manually type Desktop or Laptop adding it to the information already in the field.
  • Specify Custom Build as the manufacturer if it is not an OEM machine.
  • The tool does not fill in this information but it is very important if someone has to research drivers or hardware for your machine.
Log on to Sevenforums (SF) and let the tool fill in you System specs on your SF profile.

Full instructions are in the tutorial. It's a simple process and it makes that information readily available on your posts. You don't have to retype the information in any thread.

Click here to view your system specs on SevenForums.

Click on My System Specs in the lower left of any post by any member to see what is presented about their machine.

Thanks

Also,
My System SpecsSystem Spec
03 Jul 2014   #13
Anshad Edavana

Windows 7 Ultimate x64
 
 

A disk partitioned as GPT under Windows probably will have "Microsoft Reserved" partition (MSR ). The absence of that partition suggest the drive is partitioned using "Disk Utility" under Mac. This is only my assumption - OP need to confirm.
My System SpecsSystem Spec
.

03 Jul 2014   #14
jumanji

Windows 7 Home Premium 32 bit
 
 

Yes, OP's drive is an exact replica of the OP's drive here http://www.sevenforums.com/hardware-devices/336422-wd-my-passport-external-hdd-not-showing-my-computer.html where you and me almost instantaneously posted that it appears to be a Mac formatted drive. And the OP conceded.

Windows will neither assign a drive letter to it nor read/write to it natively if it is so..

Nonetheless it would be interesting to see how Windows diskpart shows the drive and what it says when one tries to assign a drive letter.

And here the OP only says he had used it before but where? That is why a previous history is called for and also whether he needs the data on it.

If he intends to use the drive henceforth only on Windows 7, and does not need the data on it he may delete those partitions shown in diskpart and then format it to NTFS.

If he wants to shift it back and forth between a Mac and Windows PC he has to format it to exFAT.
My System SpecsSystem Spec
03 Jul 2014   #15
gregrocker

 

Gary asked me to look in. Some observations as we await important answers:

Disk Mgmt does not always show MSR partition. Missing MSR partition after clean install.

It is clearly an EFI install of an OS so if as stated it was a backup it may be a clone which failed due to lack of EFI support. So its also important to know why an EFI install to GPT disk is being called a backup.

Everything I can see that can be done has been proposed, up to the soundest choice which is to wipe the drive with Diskpart Clean Command then repartition in Disk Mgmt as an MBR disk.
My System SpecsSystem Spec
03 Jul 2014   #16
jumanji

Windows 7 Home Premium 32 bit
 
 

Quote   Quote: Originally Posted by gregrocker View Post
......Disk Mgmt does not always show MSR partition. Missing MSR partition after clean install.

It is clearly an EFI install of an OS so if as stated it was a backup it may be a clone which failed due to lack of EFI support. So its also important to know why an EFI install to GPT disk is being called a backup.

Everything I can see that can be done has been proposed, up to the soundest choice which is to wipe the drive with Diskpart Clean Command then repartition in Disk Mgmt as an MBR disk.
GPT specification does not specify a 128 MB reserved partition. It is an addendum that MS has put in for a specific purpose. When it exists in an Windows GPT formatted drive, it can be seen by other partitioning software.

The other point is it need not necessarily be a failed OS install on a GPT drive or a clone that failed. To my mind it was used as a backup drive for a Mac. The partition structure of the drive when compared to the one in the other post I referenced is ditto of a Mac formatted drive.Hence the question whether he needs the backedup data on it.

We shall know for certain when the OP gives all details asked for.
My System SpecsSystem Spec
03 Jul 2014   #17
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Thanks Greg.

If the drive is formatted for Mac, HSF or some other file system I believe it would show up as unallocated or unknown files system?
My System SpecsSystem Spec
03 Jul 2014   #18
Anshad Edavana

Windows 7 Ultimate x64
 
 

Quote:
If the drive is formatted for Mac, HSF or some other file system I believe it would show up as unallocated or unknown files system?
That is what the current situation. "Disk management" doesn't seems to detect the file system at all - it just says "Healthy Primary Partition".Those who dual boot Windows and Linux will easily recognize this. As Windows don't read "ext4" , Linux drive won't be assigned with a letter in Windows. It's partition won't be marked as "unknown" either - instead you will see "Healthy Primary Partition".

http://askubuntu.com/questions/13825...euse-the-space




In the above example, 191 MB is Linux Swap and 20 GB is Linux Root ( either Ext3 or Ext4).

Try assigning a drive letter to the Linux partition and you will understand. Windows is smart enough to detect it's own file system.
My System SpecsSystem Spec
03 Jul 2014   #19
jumanji

Windows 7 Home Premium 32 bit
 
 

Quote   Quote: Originally Posted by Britton30 View Post
Thanks Greg.

If the drive is formatted for Mac, HSF or some other file system I believe it would show up as unallocated or unknown files system?
Just have a look at this thread WD My Passport External HDD not showing in my computer.

The screenshot of the drive posted by the OP there is that of a Mac formatted drive given by his friend.

All the partitions of that drive are shown as healthy but no file system. It is a replica of OP's drive here.

Following Anshad's suggestion to install Macdrive to copy files from his Windows system, he copied the files onto the Macdrive and gave it back to his friend.
My System SpecsSystem Spec
03 Jul 2014   #20
Dumhed

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

Quote   Quote: Originally Posted by Britton30 View Post
Quote   Quote: Originally Posted by Britton30 View Post
Try option 3 here: Drive Letter - Add, Change, or Remove in Windows

If that won't work, try Option2. As essenbe said with a drive letter it will show in Computer. You should be able to copy data from it or format it.
Did you read this tutorial at all?
Yes, and what the tutorial suggests did not work or is not possible since, as I stated, I cannot select any options to re-assign drive letters.

Quote   Quote: Originally Posted by essenbe View Post
Dumhed, try the above suggestions, if none of them work open an elevated command prompt (click start, in the search box type cmd right click the cmd that appears and select run as administrator) in the cmd window type diskpart press enter, when the window replies diskpart, type list disk, press enter, it will list each disk and assign them a number. (pick the number of the disk in question, it should be disk #2.) type select disk 2 and press enter, next type detail disk and press enter. Please post a screenshot of the command window.
I've attached the screenshot below. As you can see, the "healthy" primary partition did not appear.

As for drive history, I had always used this drive as a media storage drive and a backup for important documents... that is it. I have never formatted it with a Mac (don't have one, haven't had one since Apple IIe). I've never used it to boot an OS, linux or otherwise.

(I'll get around to the System specs later today, however, the same thing happens on multiple machines when connecting to this drive via USB, or installed internally via Sata cable, not just on the one I am currently typing on)


Attached Images
Hard drive installed, shows in Drive Mngmnt, in Bios, but not in Comp.-diskpart.jpg 
My System SpecsSystem Spec
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 Hard drive installed, shows in Drive Mngmnt, in Bios, but not in Comp.




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