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What are these folders & files in Drive C:\?

Note: This is part 2 of 2. Part 1 can be found here:

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/Q_28247645.html

Hello,

I am running Windows 7 and the Drive C in my desktop is a 125 GB Solid-State Drive. A while ago I made some changes in how files are stored and it has resulted in my Drive C frequently turning red due to overloaded memory.

Normally I would describe the changes I made but that's not relevant at this point because I've got a new replacement SSD (500 GB) sitting in its package here on my desk. The problem is that my nephew, who built my system, will not be available until after October 1st. He's got some way of installing the new drive without the need for me to reinstall Windows and all my software. Therefore, it's well worth the wait.

The purpose of this thread is to:

        1) ask if someone can give me a Band-Aid by telling me what I can safely delete from Drive C in the meantime (see Part 1), and

        2) ask if someone can briefly explain some of these folders & files which reside on Drive C (this thread—Part 2).

Following are some screenshots using TreeSize Free to display various folders, subfolders & files along with their memory utilization.

By the way, there are a couple of items (eg Outlook) which I realize could be moved but need to stay.

Thanks

Screenshots:
(the first image shows in tree form, the folders and files depicted below)

Fig. 0 Items in red are those about which I'm wondering

Fig. 1 First level folders in Drive C

Fig. 2 First level folders in AppData

Fig. 3 Contents of the folder: Local

Fig. 4 Contents of the folder: LocalLow

Fig. 5 Contents of the folder: Roaming

Fig. 6 Contents of the folder: Windows

Fig. 7 Contents of the folder: winsxs

Fig. 8 Contents of the folder: Installer

Fig. 9 Contents of the folder: System32

Fig. 10 Contents of the folder: [4 Files]

Fig. 11 Contents of the folder: [9 Files]


Also, what are the differences between the three AppData subfolders: Local, LocalLow & Roaming?

Thanks again
0
Steve_Brady
Asked:
Steve_Brady
2 Solutions
 
Skyler KincaidNetwork/Systems EngineerCommented:
I would recommend:

1. Download the portable version of CCleaner and run it:
http://www.piriform.com/ccleaner/download/portable

2. Run the temp file cleanup and also the registry cleaner

3. When that completes run disk cleanup (built into Windows) and make sure and check all the boxes so all the temp files are deleted.

4. What are the names of the folders on the root of your C:? There might be some driver or setup folders that can be deleted.
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noxchoGlobal Support CoordinatorCommented:
Fig. 1 First level folders in Drive C

Open in new window

C: drive contains normally the Windows OS and MS apps data. Also most of the installed third party level programs put their data by default to this drive.
Fig. 2 First level folders in AppData
Applications data for specific user profiles.

Fig. 3 Contents of the folder: Local
Local user profile data

Fig. 4 Contents of the folder: LocalLow
Here are the data for Internet Explorer is saved for temporary usage. It is so called SandBox of Internet Explorer.

Fig. 5 Contents of the folder: Roaming
Roaming profile data. Roaming profile is a profile saved on server and accessed by a user from any machine in the local network.

Fig. 6 Contents of the folder: Windows
Windows system data plus update data and drivers.

Fig. 7 Contents of the folder: winsxs
the component store (\Winsxs) is needed to repair the OS binaries in the event that a file becomes corrupted or, in worst case scenarios, compromised.  There are a few directories in the component store so let’s look at them and what their general role is in Windows.

    \Winsxs\Catalogs:  Contains security catalogs for each manifest on the system
    \Winsxs\InstallTemp: Temporary location for install events
    \Winsxs\Manifests: Component manifest for a specific component, used during operations to make sure files end up where they should
    \Winsxs\Temp: Temp directory used for various operations, you’ll find pending renames here
    \Winsxs\Backup: Backups of the manifest files in case the copy in \Winsxs\Manifests becomes corrupted
    \Winsxs\Filemaps: File system mapping to a file location
    \Winsxs\<big_long_file_name>: The payload of the specific component, typically you will see the binaries here.
http://blogs.technet.com/b/joscon/archive/2010/08/06/should-you-delete-files-in-the-winsxs-directory-and-what-s-the-deal-with-vss.aspx

Fig. 8 Contents of the folder: Installer
Backup of installed program packages. In case you want to repair/uninstall the installed application the data from this directory is used.

Fig. 9 Contents of the folder: System32
http://www.symantec.com/connect/blogs/cwindowssystem32-files-explained

Fig. 10 Contents of the folder: [4 Files]
http://www.symantec.com/connect/blogs/cwindowssystem32-files-explained

Fig. 11 Contents of the folder: [9 Files]
http://www.symantec.com/connect/blogs/cwindowssystem32-files-explained
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Steve_BradyAuthor Commented:
Thanks. Great information and suggestions.
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