There are several apps available to allow this,one I tried was Virtual-CD,some games worked,most didn't as they needed "reinstalled" due to bits broke(corrupted/missing,etc)or everytime I tried to continue from previous saved point,it would decide I hadn't ever played it before,requiring hours of additional gameplay to return to where I had already been.
CD-Cache is a great little shareware program, it work's by specifying a certain portion of HDD space as a cache. It works great with "reference" type CDS, eg encarta, ICD Infodisk etc.... Not sure how it would work with games though.
I know of a few sites where you can download files that will replace the 'desktop shortcut' for a game/application so you do not need the CD in the drive to run it.
There are several advantages in doing this. I don't have to be continually hunting for discs in order to have a quick 5 minutes of gameplay (my game collection is extensive and on a very high shelf). It also means I reduce the risk of damage to an expensive CD/DVD.
However, it also means that people can download games/apps illegally and use them. As it is this that people will latch onto, I will not post the url of the sites I use to get these patches. But Google will be able to help you.
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