Yosemite install fails when I choose to install on my hard disk. It says that this disk is used for Time Machine backups. I use an external 1TB for back up. Anybody know what I can do?
I didn't have my Back up external HD connected when I tried to install Yosemite so chose the internal HD as the install drive. I have a Macbook pro with 53Gb free space. I have never used my internal HD as a time machine backup. I renamed my HD to see if that would fix it but to no avail.