Disk Cleanup wizard in Windows 7 SP1

No it's not, as it says:

 

First startup after using this got a BSOD. Just one but weird.

 

That's strange, I never got on in several years of deleting Windows Update backups.

 

Roger but what does it delete exactly?

thanks Roger

 

It deletes Windows Update backups.

When an update is installed, backup of any changed files are kept enabling you to uninstall the update if there are problems with it. If the update works fine, there is no need for the backup, so it can be safely deleted.

I'm what criteria this uses to decide with backups are unneeded. Possibly it is done on how long since the update has been installed, e.g. if the update has been installed for a while it is probably not causing any problems, but for a new update it would be best to keep the update for a short period to time, in case it causes problems and you need to uninstall it.

 

thanks
but like what ccleaner can do with windows xp?

 

New Windows Update CleanUp

Recover Tons of Wasted Disk Space with the New Windows Update Cleanup.

http://lifehacker.com/recover-tons-of-wasted-disk-space-with-the-new-windows-1442937625

 

do you installed from the w7 update module or did you download with explorer or firefox?

thanks

 

BTW, can anyone tell me if after to clean Windows Update, the item 'Windows Update Cleanup' is still in Disk Cleanup windows?

 

It is.
I just ran it again and its still present.

 

Strange... Not in my PC. (BTW, is your OS not-English?)

Thanks anyway for the info, The Red Moon.


EDIT: Sorry I saw now that you are in England...

 

it cleans up only 50Mb to me!!

under update installed i have a long long list!

144 updates!

does this utility delete all these backups in your pc?

 

Have you tried clicking "clean system files"....?
It works for me ok.

 

i haven't and clean system files should be not related to service pack but restore points

or?
http://i.imgur.com/k9XK2rt.png

under installed updates what do you have?
look
after the clean up

what's wrong?

 

thanks sadly for are only 50mb

 

The option disappeared for me once I'd used it.

edit: but I can see it is still scanning for those files in the 'calculating' dialog box.

 

Ronjor, Thanks for the heads up. I got 6.5GB.

 

Hi
i updated every last update and run it it saved me 1GB!!!

selet to clean up and reboot!
it cleaned but it told me the are still 2mb

 

Yes, I'm seeing that too. There are a number of options, such as windows error reporting, that don't show in the window if there are no files in that category that can be deleted. My guess is after the next round of updates are installed the option to delete the backups will appear again.

 

Thanks for the info. Very appreciated.

 

Interestingly, there was no "clean system files" button, the WU cleanup item was already in the list (and pre-ticked). This may depend on how you do your update checks ... back on XP (and prior) I'd open IE and go to the WU site, but on 7 I just "run" WU from the start menu.

So that you don't get into a panic when you reboot, be forewarned ... you'll get the same "configuring updates, don't turn off" message both shutting down and while rebooting, just like after a real update, although the latter jumps from 30 (35?) to 100 almost immediately. The new procedure is a little unsettling, if you're not prepared for it ... it seems to hang for quite a while while showing 100%, then changes to "cleaning up" for an additional while before returning to the normal startup. In my case I gained about 3 gigs (free space, that is), don't have Office on my system which probably would have amounted to quite a bit more.

 

How it works is a little confusing. Remember we're talking about Windows 7. If you run Disk Cleanup without elevating it first (run as admin) it will not scan for and include the "windows update cleanup" category. If you then click on the "cleanup system files" button UAC will kick in and ask for confirmation followed by a scan that will include "windows update cleanup". However the "windows update cleanup" item appears in the list on the Disk Cleanup tab with all the other items that don't require elevation, not the "More Options" tab where you can delete system restore points, etc. It's easier to right click and run Disk Cleanup as Admin to begin with if you want to remove windows updates. Note that if there are no updates to delete the item will not appear in the list, however you can observe that Disk Cleanup scans for the updates.

Yes, Disk Cleanup apparently only marks the updates for deletion and waits until shutdown/reboot to actually remove them. Maybe they did it that way so the hard drive wouldn't be tied up while people were using the system?

 

The MS document linked to in post #1 describes the operation of the program.

 

It does a fairly good job of doing so, but it's not completely clear which I believe explains why there has been some back and forth here.