lost HDD partition after Windows 7 reinstall

October 10, 2015 at 15:23:26
Specs: Windows 7
Complex problem. Windows packed in alltogether and got stuck just on black screen. I eventually managed to format C partition after booting from cd I then proceeded to install windows but it would not finish so I went through clean disk part instruction... when I listed disks only one appeared - my hd is 750gb but only one disk at 160gb appeared... I cleaned that and made fresh windows install that installed fast and fine but now my hd shows at 160gb only and all the data is gone. The missing disk does not show in disk management. I also installed fresh sata drivers. I am at the end of my witts now... no idea... please help...

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#1
October 10, 2015 at 19:19:48
Was there anything on the lost portion of the hard drive that you haven't safeguarded off the drive (usually to dvd at least)? If so do want to try to recover it? If so... do not write anything more to the drive as is. There "may" be a way to recover it...; albeit with a little tiime/effort.

recuve and easus have utilities that "may" help in this regard; and there are one or two others as well.


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#2
October 10, 2015 at 19:56:29
You should have asked for help before you formatted because it would have been much easier to recover the data prior to formatting. As said, if you want to recover all that is possible from the drive then do not save or install anything until you do the recovery. Please confirm that you need help with the recovery (2 listed recovery programs above can both be used to see how much can be recovered) Read their web sites for details. If you can run the programs (one at a time) without installing like from a CD created on another machine, you will be reducing the chance of overwriting the memory location of some of your files.

After that we can deal with the hard drive issue. Check in your BIOS to make sure that your SATA ports are set to AHCI and not Legacy. Also list your system make and model number or motherboard make and model number and your hard drive make and model series as these may also help.

You have to be a little bit crazy to keep you from going insane.


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#3
October 11, 2015 at 00:29:43
Hi guys thanks for speedy response... I tried easeus partition recovery and files recovery and it did not find anything... :-/ Is that possible? Could it be that such big portion of hard disk is just corrupted and the format or clean process just 'locked' it out?

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#4
October 11, 2015 at 06:48:15
"Could it be that such big portion of hard disk is just corrupted and the format or clean process just 'locked' it out?"

Extremely doubtful. It would help if you'd explain how the HDD was partitioned prior to this whole fiasco.


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#5
October 11, 2015 at 07:18:01
I had 2 partitions c and d... c only carried the windows and d carried all the data, installed programs and such... c was a 60gb partition and I have no idea how it became 160gb as all I did was format c only and then cleaned it in diskpart... :-/

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#6
October 11, 2015 at 20:06:23
If you did a full format then the memory locations were overwritten. If you did a quick format then the memory locations were not overwritten and recovery is possible. I do not use Diskpart so I am not sure if 'Cleaning' with it also overwrote the memory locations as well. Once a partition is written over with 1's or random 1's and 0's then it is not possible to recover anything (not counting expensive professional recovery services).

You should always have important files on more than one drive since you never know when one becomes corrupted, encrypted, or just dies. The more important to you, the more locations it should be saved to.
In my house, I have an internal back up drive on all desktop computers and an external back up drive for all laptops plus all of them are networked together and important stuff is saved to a similar folder on multiple computers (the family photos folder is duplicated on 4 machines). Some people use external drives and DVD's for redundancy while others use a back up drive and a cloud storage (or secure off site paid for storage), and others use a NAS and DVD's or External drives that are removed from the premises. For the future, make a plan that works for you and stick to it.

You have to be a little bit crazy to keep you from going insane.


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#7
October 11, 2015 at 21:35:26
If Disk Management isn't seeing 750GB then either you have partitions that Windows can't access or you have a partial disk failure. hard disks have multiple platters with one or two sides that are used for storage. There are multiple read/write heads that can fail.

Is this a desktop or laptop? Post details on ;your hardware.

Boot into the BIOS (setup) screens to verify your hard drive is actually being seen as 750GB.


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#8
October 12, 2015 at 02:38:33
Sigh. I did a full format on C... twice... so am obviously screwed when it comes to data... :-/
I am in bios. All it says about HD is Toshiba MK1652GSX, serial no. 98KEP1IOT... the capacity does not appear... let me know if you have any trick to find out... :-(

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#9
October 12, 2015 at 02:56:38
Also to clarify the recovery software not recovering. It only seems to be able to search the 160gb and recover the windows files over and over again so nothing of value...

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#10
October 12, 2015 at 08:07:16
See if the two partition recovery utils I refer to (link) in this post can help... (#4)

http://tinyurl.com/ot4b2ob

I trialed both with degrees of success in a similar situation (an age ago). Possibly one or other may help?

message edited by trvlr


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#11
October 12, 2015 at 23:41:41
Have you determined you can or can not see the other missing 590GB? If the drive has failed then it makes no difference what you do.

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#12
October 13, 2015 at 02:23:26
I can not see the 590gb anywhere... not in disk manager nor in my computer... and in bios it does not show the capacity... when I used diskpart I could also only see 160gb but prior to installing the new Windows I could see the other partition too though...

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#13
October 13, 2015 at 06:14:27
You could try booting to a live version of Linux to check out hardware AND the files. Linux doesn't use the same file system so it may be of some use to you.

Live versions mean they run off the CD/DVD/flash drive and don't need to be installed. They may need to write a small amount of data to the drive. Linux Puppy is a small one I have used for your purposes.


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