After following the instructions on creating install media for Mac OS X Mavericks, I repeatedly got the error message “This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupted or tampered with during downloading.” After some web searching, I came across Jonathan Mohar‘s blog with the bit that did the trick! You simply have to set the date on your computer before you attempt the installation.
- From Utilities menu, pick Terminal
- Set the date using the command: date 110216472013.53
- (Optional) You can get an actual current date from another machine in the Terminal with the command: date “+%m%d%H%M%Y.%S”
- Then type exit to exit the terminal, or command-Q. The installer comes back up, and all is well.
Thanks, Jonathan! =)