Windows – How to shrink hard disk more effectively

How to shrink a partition with unmovable files in Windows 7

http://www.brandonchecketts.com/archives/how-to-shrink-a-partition-with-unmovable-files-in-windows-7

Says that the way to do it: 1- Disable System Restore (Right click on
Computer => Properties => System Protection => System Restore) 2-
Disable Virtual Memory (Right click on Comptuer => Properties =>
Advanced System Settings => Performance (Settings) => Advanced Tab =>
Virtual Memory (Change) => No Paging File => Set. 3- Run Disk Cleanup
to get rid of Thumbnails, Temporary Internet Files, and a bunch of
other files that it makes no sense why they are immovable. 4- Restart
the computer to have #1 and #2 take effect

Try to shrink the volume again. If it still is unreasonably large, you
will then have to look at Event Viewer to find which file is at the
boundary. 1- Right click on Computer => Manage => Event Viewer =>
Windows Logs => Application. 2- Click on Filter Current Log, and put
’259′ for the Event ID 3- Click on the latest event and look through
the detail to find the problematic file. You can then attempt to
delete that file (or set of files) manually. You may have to restart
into safe mode to delete some files

It took me about 5 loops of doing the above before I was finally able
to shrink my volume to the size that I wanted. After successful, you
can then re-enable the features that you want (namely System Restore
and Virtual Memory)

The problem is the file that's problematic for me is:
\System Volume Information\{4ebf1c32-6152-11e2-95c2-1078d23b5db1}{3808876b-c176-4e48-b7ae-04046e6cc752}::$DATA
 - The last cluster of the file is: 0x1dc204a
 - Shrink potential target (LCN address): 0x1604d70
 - The NTFS file flags are: ---AD
 - Shrink phase: <analysis>

I think it's too complicated. Not to mention that system volume information is a prety important file.

My plan is to do defragment before boot.

Will that help?

Can i do that?