Solved Hard disc space

[Oilman5678]

Can anyone please help me with a problem that's driving me nuts.
I am running Windows 7 on a 1 TB hard drive.
The total size of files/programmes on the hard drive is 497GB. But, I only have 41.9 GB free???
I have run WinDirStat, & it shows an "unknown" space of 434 GB. This section is a yellow colour, & does not show any files. I cannot alter it or delete it, so how can I recover this 434 GB.
I have run cc cleaner, disk defrag etc. but no joy.
I haven't got windows restore active as I use a programme called Rollback RX ,which allows me to revert back to an earlier save point.
I have run WinDirSat & also Treesize. I have attached the results.

https://imgur.com/a/SLEZ4

https://imgur.com/a/2Ew0r

Can anyone please help me?
Regards
Dave

 

[strollin]

Can you post a screenshot of Disk Management?

 

[Paul Black]

Hi Dave, welcome to sevenforums,

Run Disk Management...

Start > Control Panel > Administrative Tools > Computer Management > Disk Management

...and post the results here.

I hope this helps!

 

[Oilman5678]

Thank you for helping me. I have attached a screenshot below.
Dave


https://imgur.com/a/tsEHm

 

[Paul Black]

Hi Dave,

Out of interest, why is the date created/modified showing as 14-July-2009?
Is your date and time correct on the computer?

I hope this helps!

 

[Oilman5678]

Paul,
I hadn't noticed that, well spotted. Anyway, I can't answer your question. My hard drive was replaced by a new one about 4/5months ago, & Windows 7 was reinstalled on it. The current time/date on my computer is correct.
Dave

 

[Megahertz07]

Please don't use external links to images. Use the paper clip (on quick reply window) - browse to the file - upload.
I can see almost an identical drive on disk 1.
Did you created an disk image and stored on drive C:?

 

[DavidE]

I have run WinDirStat, & it shows an "unknown" space of 434 GB.

WizTree can often show the files that WinDirStat lists as unknown.

Antibody Software - WizTree finds the files and folders using the most disk space on your hard drive

 

[Oilman5678]

I have attached the Wintree file showing that approx.half of my hard drive capacity is missing(?)
I have also attached other results from WinDirStat etc.
Please, can anyone advise?
Dave

 

[Megahertz07]

Run a check disk on drive C: (chkdsk c: /f). You may have cross links.

 

[Oilman5678]

I wish I hadn’t tried the above (chkdsk), because after setting up the check for when the pc was next started up, now it just won’t start up. As soon as I try to start the pc. a message comes up saying there is a hard drive problem & to start up by inserting a windows disc ( which I haven’t got, as I bought the pc with windows already installed). Also because of the message, I can’t start up in safe mode either. I’ve now got to take it to a store for repair!!!

 

[Megahertz07]

So disk 0 has a problem.
Isn't disk 1 the original disk?
Boot from Disk 1 and proceed with check disk 0.

 

[Oilman5678]

Hard disc 0 is the one with windows on it. If you look at the screenshot of computer management where it shows each hard drive, disc 0 is the boot disc.

 

[DavidE]

Disk Management shows Disk 1 also has an active partition, that means your PC also has a bootloader there.
Unless something was done to stop the original Win 7 on disk 1 from running it should still be able to run.
Basically you have a dual-boot setup, with 2 copies of Win 7.
You just need to tell bios to boot from disk 1.

 

[Oilman5678]

David. Thank you very much (& Megahertz 07). I pressed the f12 key which allowed me to choose which drive to boot from.
I've now got the pc up & running & drive C (which is where I've had problems with space) is now showing 259GB free, where I only had 35GB earlier today (?????????)
I don't understand this at all. Do you think I should still run a check disc on drive C, or leave it alone?
Dave

 

[DavidE]

Your drive C is now on the disk 1 drive, not the disk 0 drive that had the space problem, and hard drive chkdsk problem.
If you assign a drive letter to the disk 0 Windows partition you should be able to see that partition in Windows Explorer.

If you don't get disk 0 fixed, you will be booting from the old disk drive and not using your new disk drive / Win installation.
I'm sure you'll find none of the Windows Updates have been applied to disk 1 that you are running now, since you started using the new drive.

If disk 0 is found to be bad, you may be able to return it for warranty exchange/repair.

 

[Oilman5678]

Morning David,
I have just switched on my pc & the only way I could start up was to go to F12 again & boot from the other hard drive. How do I set the bios to Always boot from that drive?
Thanks again for your help, you're making an old man very happy again !
Dave

 

[Megahertz07]

On BIOS you have a Boot disk priority list. Now you have disk 0 as first. Change to disk 1.
As David explained, the drive letters are assigned by Windows. Disk C: will always be the one you booted from.
If you boot from disk 1 and open disk management, you're going to see that C: will be on disk 1 and disk 0 will have a different letter assigned to it.

Once you boot from disk 1, do a check disk on the partition on disk 0.
Open a cmd window and type:
chkdsk x: /f (replace X: by the letter that windows has assigned to the old C: partition on disk 0)

You wont need to schedule to next start. As it isn't the disk with the OS, it will un mount and do the test.
Pay attention on the results.

 

[Oilman5678]

Dear Megahertz07,
I really appreciate your efforts in trying to help me with this problem. Unfortunately, the advice you give me above I find confusing as I think it's a bit difficult for me to carry out. I know I'm being a pain in the butt, but is it possible you could set it out line by line what I need to do, I then can follow your advice slowly & correctly. For instance, I understand what you say about Boot disc priority, but I can see how to alter the priority so that the pc automatically boots from the other (F) drive. I have spent quite a time trying to see how to do it, but I am completely baffled.
I really hope you don't mind continuing to help me a little while longer.
Kind regards
Dave

 

[DavidE]

You need to enter BIOS SETUP to permanently change the boot disk priority.
The F12 key is a one-time boot priority, BIOS SETUP is some key other than F12.

We need your system specs to get you exact instructions how to enter and use bios setup.
If you have a pre-built PC we need the make and model.
If you have some type of custom-built PC we need the motherboard manufacturer and model.
Speccy can give you the motherboard info.
Speccy - Builds