Why are Windows updates so slow (and long) with Windows 7. Okay maybe some background on the root of the problem would help. Windows XP used a fast and great mechanism called Hotfix Installer (Update. Updates installed in very little time (if you want to even reduce update time on XP, temporarily. System Restore service) and updates will install at crazy speeds because it doesn't waste time creating a restore point for every update.
Hotfix installer works by simply installing a new version of files to be updated at C: \Windows\system. C: \Windows\system. Windows File Protection cache).
This is File Based Servicing. The hotfix installer (Update. It also supported the ability to slipstream a service pack or update into the original XP setup files using the /s switch.
When Microsoft was developing Windows Vista, they realized that components had gotten too many interdepencies on each other and to service/patch each file reliably without breaking another component that relied on it, Microsoft introduced what they called. Component Based Servicing (CBS) (read all about it in The Servicing Guy's blog: http: //blogs.
What it does basically is it installs the entire OS's all files including all languages and all drivers shipped with the OS into C: \Windows\Win. Sx. S. and then it hard links files from there to C: \Windows\system. Whenever an update is installed, it no longer installs it to C: \Windows\system. C: \Windows\system.
XP's hotfix installer (Update. Instead, it updates the files in. C: \Windows\Win. Sx. S. Now Win. Sx. S can contain multiple copies of the same file if it is used by more than 1 Windows component. The higher the number of components, that many number of times the file exists in C: \Windows\Win.
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Sx. S. It does not give the user to not backup. XP's /nobackup switch. As as you install more and more updates on your system, they will take more and more disk space. The very reason Windows 7 is bloated and updates take so long is because of this servicing mechanism it uses (Component. Based Servicing). Of course, one can't deny installing security updates and leave their system. The whole servicing stack is more of a downgrade to XP's update.
It causes slow logoff and slow logon (Please wait while. Windows configures NONSENSE), heavy disk thrashing upon logon and logoff when updates are installed and systems being unable to boot because of failed updates.
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Another huge issue it introduced is the inability to do a true slipstream of service packs and hotfixes. First it is searching for whether the update applies to your system for a long time. Then that post- installation process (. Do not. turn off your computer. The solution is to stay with Windows XP. I can also install a slipstreamed with SP3 and all updates copy of XP is about 3. PC. If you have to use Windows 7 or Vista, you will have to be stuck.
Microsoft does not even acknowledge that there is any slowdown or loss of functionality. Take the case of. Vista today. First you have to install Windows Vista, then SP1 which takes about 6. SP2 and then install all the dozens of post- SP2 SLOW UPDATES. It's not worth wasting your time on an OS whose servicing mechanism Microsoft completely screwed.
I recommend you read more about the servicing and how it works at The Servicing Guy's blog. Microsoft's response to this is vague - they simply state . Of course they know all this too but can't admit it since it makes their latest OSes look poor. Moving from a very simple and fast update mechanism that worked to a complex one that requires endless “configuring” and repair. Please Do Not Turn Off Your Computer.
Computer does not boot.
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