mavericks appstore download starts installing unintentionally I have been running Mavericks 10.9.4 on my system. with the release of 10.9.5 I preferred to re-download whole mavericks instead of just the combo update. This will be helpful if I clean install mavericks in that I would not have to install 10.9.4 and then run combo. Also it will take less storage in one pack. more manageable for me.

I started to re-download the mavericks from app store. It was a bit slower than last time. taking several hours. time to time I was checking progress in launch pad. After several hours when I checked back, system was in sleep mode. I logged and in AppStore, progress was 'Installing ... 9 minutes left' and stuck there for hours. several restarts I did but no avail. 

It is amazing why the install process started automatically without user interaction after the download completes?

Secondly, I lost the purpose of downloading i-e the installer. My purpose was to save mavericks installer 10.9.5 for later use. But in app folder, the x icon is showing only a few KB. That is definitely unpleasing after approx 8 hrs of download.

Where is the installer now which was downloaded ?

Another attempt: I tried to download under a MAC-Mavericks(guest VMware on windows 7 Host). This machine's HDD is about 26GB. with plenty of space free. But after 3GB download, AppStore started giving error

Error: 'We could not complete your purchase... you need 4.97GB of free space to download os x...'

That is pinching. At this moment free space is 4.54GB. I am unable to delete anything from MAC components like iTunes etc to make little more space to complete the download. Also unable to expand this machines HDD from VMWARE. Perhaps there also space issue. The windows partition where this machine resides is 25GB with 10GB free. When I try to expand it says there is no free space on the file system for this  operation. Perhaps VMware expands in this way: first creates a duplicate of the main vmdk then do something to increase its space and delete the original vmdk. Or for other reasons it IS asking more space to increase the vmdk of mac vm. 

**Please suggest something to get the purpose: obtain mavericks 10.9.5 fro App store for  later use. can something be done to preserve those above one complete and one half way (under vmware) download attempts **
Just upgrade as normal. Then if you need to do a clean install, use the recovery partition. Or is there something else you are after?