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Computer not detecting Hard Disk and showing as Unallocated Space

Anonymous
2010-10-07T12:41:36+00:00

Hi All,

I transferred my data from a 160GB to a Hard disk drive of 250GB both internal a problem came up and said that some file are unreadable and I decided to skip. But after a while my back up drive just locked me out and when I double click the drive a message came that 250GB drive F: is not accessible. Access Denied. So I scan and a message came say force disk mount and I clicked yes.

Then it finished and the drive is still locked. My F: drive is not full and need my files as its my back up drive all my works are in this drive. And not the drive is not seen in my computer and I cannot find it. Went to disk management and shows Disk 0: Uallocated Space and It shows a small round logo woth a red down arrow.

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2010-10-28T15:20:24+00:00

Hi, Margarita.

Did I wipe the external drive clean?

Maybe, but probably not.  It takes a while to "wipe" a drive; about as long as a reformat, because the system has to write zeroes or ones or garbage - something! - into every spot on the disk, and that can take a long time.  So your problem is probably less complicated than this.  Maybe you somehow wiped out the partition table and/or the Master Boot Record.  In that case, all the data is still there, right where you left it, but you'll have to re-create the signposts to find it.

and is there any way I can retrieve that data?

How "techie" are you, and what tools are at your disposal?  Do you have a geeky friend who can help?  (One that you trust A LOT?)  With luck, skill and tools (or maybe just two out of three), you and your friend might be able to recreate the signposts and recover all those files, maybe in minutes.  ;<)  And maybe not.  :>(

To clarify, by "Disk Manager", do you mean the Disk Management utility (diskmgmt.msc), which is included in every copy of Windows since Win2K?  Or some third-party utility?  When you post back, please give more details, like:  How big is the HDD?  USB or SATA or ??  Formatted NTFS or FAT32 or ?? How many files and how many MB/GB/TB involved - a rough guess is good enough.  What operating system and file system was your friend using on this disk?  What else is on the HDD that might be in danger - or already lost?

Disk recovery services are available, but they typically are expensive - hundreds or thousands of dollars - and probably not worth it in this case.

RC


R. C. White, CPA

Microsoft Windows MVP (2002-9/30/10)

"margarita17" wrote in message news:*** Email address is removed for privacy ***...

I am having a problem very similar to this.  I am working on a laptop that runs Windows XP.  My friend recently let me borrow his external hard drive with all of his music files on it.  It showed up on my computer as an F: drive and allowed me to transfer half of the files over before it stopped recognizing the source.  Like this problem, the disk showed up in my Disk Manager as not initialized.  Now I believe it's initialized, but the entire disk is showing up as unallocated space.  Did I wipe the external drive clean? and is there any way I can retrieve that data? Thank you, any help is appreciated - he's going to kill me!


R. C. White, CPA Microsoft Windows MVP

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12 additional answers

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  1. Anonymous
    2010-10-08T10:08:12+00:00

    I tried this but showing as Physical Drive and not file found when there is about 200gb of Data

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  2. Anonymous
    2010-10-08T04:27:05+00:00

    Hi RC,

    Here's a quick detail on my computer its a desktop windows 7 and assemble and it was upgraded from windows XP Pro to Windows 7 Professional, and its assemble.

    I have three hard drives originally one-160gb for the windows drive as C:, D: and E:. One other 160gb for my media. And the 250gb for my personnel stuff like Music, Games, Software, the 250gb drive act as a backup for all my works. All the drives work perfectly together until now.

    My friend wanted a hard disk for storing some of his works so he asked me and I told him after I clear out my 160 gb disk I will give it to him. I did removed all the data and kept in the 250gb-my backup drive, thats what I named it and no partition cause I do not want so much drives. So I moved and after I formated my other 1602gb disk to give it to my friend.Done removed. all is left in my desktop is the windows 160gb and my 250gb-back up drive. When I clicked the backup drive it gave me a message-Access is denied. So I ran disk check and fixed the problem and it forced a dismount and I clicked ok. But after it checked it didnot mount back and now not only is the disk unaccessible but rather gone from the compute. I checked the Disk Management. Its there but not mounting. I did try to initialized but did not work.

    Hope you will help me: Uploading the pictures for you to know the problem better. Please take a look and tell me what to do.

    Please check the pictures to give you a better idea. Please help me all my work is here

    http://i274.photobucket.com/albums/jj255/binan124/Problems/Pic1.jpg

    http://i274.photobucket.com/albums/jj255/binan124/Problems/Pic2.jpg

    http://i274.photobucket.com/albums/jj255/binan124/Problems/Pic3.jpg

    http://i274.photobucket.com/albums/jj255/binan124/Problems/Picture1.png

    http://i274.photobucket.com/albums/jj255/binan124/Problems/Pic4.jpg

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  3. Anonymous
    2010-10-07T15:29:24+00:00

    Hi,First install this program & recover your data.

    http://downloads.nucleusdatarecovery.org/download-windows.php


    mohanad

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  4. Anonymous
    2010-10-07T15:09:35+00:00

    Hi, Kitbinan.

    I'm sorry for your problems, but we'll need some more information to try to help you.

    First, how about a basic description of your computer:  Desktop?  Laptop? Make and model, or did you build it yourself?

    Were both HDDs there originally?  Have they ever worked properly together?

    As you probably know (and Disk Management will confirm), a "drive" letter does not refer to the physical disk, but to a partition on the disk, even if that partition includes all of that disk's space.  Disk NUMBERS refer to the physical disks.  In your system, is Disk 0 the 160 GB disk?  In the Status column of DM, which volume is labeled "System", and which is "Boot"?  Where are these volumes on your disks?  (A single volume MAY be both System and Boot, but not necessarily.)  Does your Win7 have a volume (probably about 100 MB) with NO letter, before your Boot volume?

    I've been using Disk Management since it first appeared 10 years ago in Win2K.  I don't recall ever having seen the down-arrow logo you describe. Where do you see this:  which column or volume segment?

    RC


    R. C. White, CPA

    Microsoft Windows MVP (2002-9/30/10)

     "Kitbinan" wrote in message news:*** Email address is removed for privacy ***...

    Hi All,

    I transferred my data from a 160GB to a Hard disk drive of 250GB both internal a problem came up and said that some file are unreadable and I decided to skip. But after a while my back up drive just locked me out and when I double click the drive a message came that 250GB drive F: is not accessible. Access Denied. So I scan and a message came say force disk mount and I clicked yes.

    Then it finished and the drive is still locked. My F: drive is not full and need my files as its my back up drive all my works are in this drive. And not the drive is not seen in my computer and I cannot find it. Went to disk management and shows Disk 0: Uallocated Space and It shows a small round logo woth a red down arrow.


    R. C. White, CPA Microsoft Windows MVP

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