Windows 10: My Windows Partition uses 730 GB! Why?

Hello,I have an issue here, my C:\ Partition shows way too much storage used and i don't know what or why that is. In properties it shows 728 GB used, but when I select everything in the partition it shows only 128 GB used. The gap is just too big. 600 GB is too much. Attached is a screenshot of my issue. How can i find out what is happening and how can i fix it?Kind regards,Andrei

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W7 Hard drive partition issue

to get rid of that 100 meg windows partition that setup creates for you on a new install on a blank hdd:

- press shift+f10 when on the partition management screen in setup <-- this opens a command prompt
- diskpart <-- start the windows command line partition management tool
- list disk <--- list the installed hdds in this computer for the next step
- select disk 0 <- might have to replace 0 with the number of the correct disk
- clean <-- this will erase all data on the disk you selected one step up- dont use the wrong disk!
- create partition primary <- creates a primary partition taking up all space on the drive, adjust the command if necessary
- exit, exit to exit diskpart and the command prompt
- click refresh in partition manager and select your newly created partition and install to that

 

Installing Windows Vista/7 on a GUID Partition Table

Dear FordGT,

First of all, thank you very much for your very useful (and imho, most recommended) tip on installing Windows 7 on a GPT hard disk, which has enabled me to install Windows 7 Ultimate 64-bit on my brand-new Samsung Series 5 NP550P5C laptop (only a few weeks old, coming up to its one-month anniversary) which has an UEFI BIOS, after wiping its slow 1 Tb 5,400 rpm hard disk (will replace it with a SSD sometime in the future) clean of SamCrap bloatware and performing a clean Win7 install.

Now, I think I may have an interesting question for you.

I am thinking of assembling a mini-ITX pc with Intel quad-core i7-3770K and GTX660Ti 2 Gb sometime in the near future (when funds permit).

I am thinking of putting a 2 Tb 7,200 rpm hard disk and a 240 Gb SSD together, and using the SSD to cache the two 1 Tb partitions (after setting up the 102 Mb EFI system partition and the 32 Mb Microsoft Reserved partition and partitioning the remainder into two equal-size partitions of slightly under 1 Tb each) using Intel Smart Response Technology.

On the SSD, I intend to create the following partitions:- a 102 Mb partition to cache the EFI system partition, a 32 Mb partition to cache the Microsoft Reserved partition, a 64 Gb partition to cache the < 1 Tb drive C (coz Intel Smart Response Techology only allows a maximum of 64 Gb), another 64 Gb partition to cache the < 1 Tb drive D, a 16 Gb partition to copy the system RAM to SSD using Intel Rapid Start Technology when putting the computer to sleep (in S3/S4 mode) and the remaining 95/96 Gb partition (I have done the sums) as a normal hard disk for stuff that requires speedy access, for games like Sims 3 which requires a lot of disk accessing.

My question is this:-

Is what I am proposing above feasible or not ?

Would it be possible to use the partitions on the SSD and Intel Smart Response Technology to cache the EFI System partition and the Microsoft Reserved partitions ?

Would Intel Smart Response Technology be able to recognise both the EFI system partition and the Microsoft Reserved partitions, in addition to the two < 1 Tb partitions (drives C and D) ?

Thanks in advance.


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HDD partitions format

Used a tool from the list and it worked..
Install won't start if windows can't recognize the partitions.