This is probably a pretty obvious questions but I have looked on macrumors for an answer and not found a clear one. Had the day off and what was supposed to be a day of housecleaning my Mac HDD has turned into somewhat of a mess. Bottom line, there are apps installed I want off and apps I deleted I want reinstalled (went crazy with Trash too). Ugh, what a mess. Anyway, I do have a Time Machine backup from a time just before I started this whole mess. When I try to restore the whole "Macintosh HD" it says it cannot delete or modify the Application (or Library) folder because this folder is needed by Mac OS X. It seems when I try to reinstall from the applications tab under "Places" it doesn't really remove any of the new installs. Either way, this doesn't seem to take care of the supporting files in other folders. I thought the whole point was to be able to go back to a previous version of stuff so I didn't have to muddle through deleting and reinstalling stuff. Could someone walk me throught this please? Thanks in advance. Add: When I tried a different way to select the Applications or Library folder, after preparing all the files for copying, it says that there isn't enough room to copy the files? Isn't it just supposed to copy over the currently installed files? What does this mean?