What i said just now were not to configure you computer dual boot, but just run CentOS on Vmware which were installed in your windows!
To perform dual boot and be able to choose which system to...
that because in your file line ending has CR LF, you just need LF. To fix this run this on your script
awk '{ sub("\r$", ""); print }' your_current_script.sh > newscript.sh