Hi all, need some help since I am definitely not a tech guy. I have a very nice G3 graphite iMac (it used to be my sister's and she barely used it ever). It has 9.2.2 on it and I just installed 10.1.2. I also installed the 4.1.9 firmware so I went ahead and bought a Tiger 10.4 dvd install disc but when I tried to use it, the disc just popped back out. So I'm pretty sure I'm missing a step somewhere. Searched forever trying to see if I had to install 10.2 first but couldn't find any answers. So I am stuck as to what to do next. It only has a 4X CD-RW in it so do I have to copy the Tiger dvd onto a cd to use it? One strange thing to add, I deleted my sister's account since she couldn't remember her password and set myself up as administrator in 10.1 which works fine when I sign in but when I go to disk utility and click on repair all choices are greyed out. I thought I read that this had something to do with an administrator account but not sure. Did I do something wrong when I deleted her account? Anyway, just stuck and wanting to keep this nice little machine but want to get Tiger on it. It is maxed out with Ram (1gb) just in case you were wondering. Thanks so much for your time.