I too had the same problem. After spending many hours and installing it five different times, only time it worked was when i chose to install the operating system later. In your vmware it will ask you in the beginning that it has detected a cent os, and will tell you to input full name and account name and password. I would recommend not choosing this option and clicking on the option install the operating system later. than configure the vm settings for acs accordingly like ram, hdd(allocating 60gb would be better option, case it checks minimum requirements during installation) etc. At last in vmware option of ACS, provide cd/dvd image and when you start ACS in your vm, it will prompt with 4 boot option, choose 1st option "with keyboard/mouse". Let the installation complete and you shouuld be able to enter setup command after that. see if it works. I hope that help some of you guys..
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