[Free Space]

I tried the following today:

 

- started with 69.3 GB free

- ran Defraggler and then had 51.5 GB free

- used CCleaner to analyze Wipe Free Space - no result

- used CCleaner to wipe free space - it reported a few MB

- after that had 70.2 GB free

 

 

I don't know how a defragmentation works precisely, but my guess is that what happens is this:

 

 

• during work Defraggler allocates free space on disk to be used for temporarily writing parts of files
  
• when it finishes, this space is wiped, but it does not deallocate that space anymore. So, the space is free, but any task that reports the used space by just checking what is reported as used will treat this as used.
  
• when you then run a task that does something with the files and free space on disk and recalculates the new results itself, that finds this space not used, so you then get the correct information. Tasks like delete system restore point, or wipe free space
  

So, my guess is that Defraggler needs to deallocate the extra space it used, and recalculate again in the end.

If there is anybody here who knows how this all works, I would like to hear if I am right (or wrong)

[Free Space]

After using Defraggler I saw a loss of 20-30 GB free space

But I got that back...

 

First time I use Defraggler (version 1.13.155)

I daily clean using CCleaner

up till yesterday I daily defragged after cleaning using Auslogic Defrag

 

CCleaner is one of my favorite tools, so I decided to try Defraggler yesterday.

It took ages, so I checked the "shutdown after completing" and went to bed.

This morning (Saturday) I found my free disk space gone from around 60 GB to 36 GB...

 

-------------------

checked Windows logs

- nothing special

 

ran my old defragger:

- hardly any fragmentation reported

- free space on the disk was almost completely covered in red (fragmented) blocks

 

deleted system restore points

- still left me at 36 GB

 

Rebooted for fresh info

 

created a system report:

- Bytes Free: 36.403.064.832 bytes

 

ran CCleaner

- gained a few kb

 

Had CCleaner analyze Wipe Free Space:

- that would gain me 0, so I didn't perform it

 

Switched Aero off

 

checked my disk size again

- 67GB free!

 

created a system report:

- Bytes Free: 71.299.616.768 bytes

 

ran my old Defragger:

- hardly any fragmentation reported

- Free space on the disk shows no red blocks

------------------

 

 

I did not check the free space before using Defraggler. I know it was around 60 GB because it was that last Wednesday and since that time I only cleaned out a few unused things, so would only be more free space

 

Thursday I switched Aero on. I did not check if that builds up a lot of used space.

When defragging Friday with Auslogics a few hours before defragging with Defraggler I did not see the disk space pie much changed, so if Aero takes up space it couldn't have been that much

 

This morning I noticed the disk space pie showing a lot more space used

 

I now wonder: between my first report and second system report of today I suddenly gained over 30 GB

What I did in between was not much:

- Analyzed Wipe Free Space, without actually doing it using CCleaner

- Switch off Aero on Windows

- create an account here

 

It is my guess that the analyze Wipe Free Space may have "sorted" the information.

I'l check the Aero space used later, but since my last Auslogics defrag ( a couple of hours before Defraggler) did not show much difference in the free disk pie, I guess that is not it. (Would be pretty bad if that would take up so much space anyway)

 

 

My system info:

CPU - Intel Core i7 CPU 920 @ 2.67GHz

Memory - DDR3 - 12.278.18 MB

MoBo - Asus P6T DELUXE X58

Video - NVIDIA GeForce GTX 295

HD - Samsung HD753LJ and Western Digital VelociRaptor

OS - Windows Vista 64 (6.0.6001)