Installing Hosts Using an ISO Image and at the last step experienced the following 'OS install failed' issue:

![]()
Handling process
1. Pressed Alt + F2 to log in to the kernel system (root/ServerOS_2012).
2. Checked the /var/log/setup.log. It showed 'error : memory size is larger than maximum limit, please check it'.

3. Checked the server physical memory - it is about 8GB, less than 8192MB. But during the installation, I did not change the Domain 0 default Memory size(8192M).

4. Change the Domain 0 default memory size to 3172MB. The installation finished successfully.
Root cause
