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I have successfully installed COS 6.3 on Virtualbox. I allocated 8 GB for VBox. It boots up fine, and I could install JAVA JDK. I tried to install JRE for Firefox, and it said not enough disk space. So, I ran du -h command:
1) I have not installed anything bigger yet, and how come almost 5 GB is used up in mapper?
2) Where is my 3 GB (out of 8 on Vbox), and how can I use that?
3) (it is not a COS question, so ignore if does not apply) Do I need to, and if yes, how to increase Vbox disk size?