I am trying to install elementary OS inside an external HDD, so I can take it with me anywhere and use it any time I need it. I have done many Linux installations before on this HDD, but using the whole memory. What I need now is to install it only in a small part.
I mean, there exists two well differentiated formatted partitions inside it, one with 650GB which I want for common storage purposes (like a normal pen drive), and another one with 100GB where I want elementary OS to be installed, totally separated from the other 650GB. The problem is that when elementary OS asks me where to install everything, it does not let me to do it on the correct partition...
It shows sda disk (Mac OSX), sdb, sdc (the HDD), and inside it, sdd1, sdd2 (650GB partition) and sdd3 (100 GB partition)
How can I solve this? And what should I choose where it asks for where to install the bootloader so I can boot it from any PC?