Your Friend and Mine The Windows Registry What is the Registry? Think of as a giant 411 switchboard Simple idea of centralized one-stop shopping for all of Windows needs Everything else is a GUI for it:
Windows Control Panel File Associations Startup Folder Information about WHAT and WHERE things are but not specifics on HOW to run them Why Edit the Registry? Registry
is the ULTIMATE authority Editing it directly allows greater control over what windows does Allows control over some features that dont have a GUI When things go bad Editing the Registry: The Choice is Simple Regedit.exe Designed for single user registries.
Cleaner interface Available in all supported versions of Windows Regedt32.exe Designed primarily for networked registries Available in Windows 2000, and NT Merged with
regedit.exe in Windows XP Registry Basics Keys and Subkeys(Folders) Reg_Dword (Numbers) Hexadecimal (decimal) 0x0000001 (1)
True =1 False =0 Reg_SZ (String) Stores strings (paths to files, etc.) Can be encrypted Backup First!! The registry stores everything that windows knows about the computer
let that sink in. Backup first! File =>Export or File =>Backup Scanreg /backup and System Restore MISTAKE=FORMAT! Organization of the Registry Local Machine Current Config
Classes Root Registry (Hkey) Current User Users The forgotten oneHKey_Current_Config\
Stores temporary information about computers settings Barely implemented \Microsoft\Windows\CurrentVersion\InternetSettings (proxy enable) The User Database Personalized
Settings for Windows Themes Accessibility Preferences Cycle- DB Saved on Exit Edit only Current_User
All Users (2k/Me/XP) HKey_Users The Current User Important Stuff in HKCU AppEvents=
What should I do with that? .mp3 (Default) MMJB.mp3 ContentType OpenWithList
Icon Command Handles file extensions/ associations and links to methods Choose what opens with what (remove old
apps) Who wins with multiple apps .mp3 => MMJB.mp3 and mp3file Icon Command
.EXEs + Viruses Hkey_Local_Machine HKey_Local_Machine Software \Microsoft\Windows System Applications
Control Sets/HW Profiles Software- Application Settinsg System- Control Sets Control Sets = Windows HW Profiles Otherwise leave it alone! Hardware
Hkey_Local_Machine HKey_Local_Machine Software \Microsoft\Windows System Applications Control Sets/HW Profiles
Software- Application Settings System- Control Sets Control Sets = Windows HW Profiles Otherwise leave it alone! Hardware \CurrentControlSet
\Enum\ same as Device Mgr \Control\Class- Driver Database HKLM\System\CurrentControlSet\Services This is the source of a lot of errors \Services\VxD Those pesky VxDs are stored here \Software\Microsoft\Windows\Current
Version /AppPath points to registered apps /Run/ vs /Run-/ /Setup/ Change install path Finding CD keys (shhh!) Registry Tricks Backup first!
If you cant find it Search! Copy to regedit.com if youre infected by virus. www.regedit.com for more info
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