Missing Disk Space??

M

marco161091

Disciple
My C Drive has 35.5 GB space.

Going to its properties show I have used 33.2 GB and thus 2.32 is free.

kslYw.jpg


But once I go inside the drive, select all the contents, and check their properties, I'm shown they're only taking 29 GB of space.

x2YwN.jpg


So I'm confused where the 4.2 GB is.

Also, as you can see for yourself, I've set my hidden files and folders to be shown so thats not the problem.

Whats more interesting is that just yesterday, my C properties showed it having 30 GB which is pretty much around the same as what the contents show. Since then I downloaded some files so that accounts for the 1 GB that I've gained.

But why does the properties now show I have only 2.3 GB left when the contents show I have 6.5 GB left.

Any help would be welcome. Thanks. :)

EDIT: Added Photos.
 
Oh snap. You're right.

I have a page file of size 4 GB.

A question then. I have 4GB RAM. Can I reduce page file size to about 512 MB - 1024 MB?

Thanks mate.
 
right click on my computer > properties> advanced system setting>advanced> setting > advanced>virtual memory change> deselect automatic> select c drive > enter new page file size
 
devi691 said:
right click on my computer > properties> advanced system setting>advanced> setting > advanced>virtual memory change> deselect automatic> select c drive > enter new page file size
Click to expand...
I already know how to set page file size.

I'm asking if its alright to reduce it to 512-1024 MB.
 
marco161091 said:
I already know how to set page file size.

I'm asking if its alright to reduce it to 512-1024 MB.
Click to expand...
AFAIK The swapping logic in short is as follows:

your ram is devided into pages, windows have page's list like

available, zero filled, free, occupied etc, there is also a term known as a process working set which is used to decide whether some pages of this process should be swapped to page file or not.

when windows found that a process working set is growing beyond a fix threshold it trims it usage, i.e. swap pages to pagefile. Now if your pagefile size is as big as physical memory (lke 4 Gb to 4GB), windows just has to maintain a one to one mapping between pages in memory and pages in pagefile. So obviously it is recommended if you have sufficient space.

Now if you set pagefile size to a value less than available physical memory, windows will apply a algorithm to put pages in & out and have to do bookkeeping(not a big hit on performance though), obviously if its too less (for eg 512 mb for 4 gb ram) than it will hit your performance severely and will soon give you a message box that your system is low on virtual memory and you should increase it. What would be a good number for pagefile than; well it depends upon individual usage pattern, how many applications you run at a time and how much memory consumption each application has.

Based on this you can start experimenting, set it to 2 gb first and than notice the performance in regular use, than accordingly choose your direction.

For more help you may refer to

How to overcome the 4,095 MB paging file size limit in Windows

How to determine the appropriate page file size for 64-bit versions of Windows
 
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