
Mount with Virtual Box "automatic mounting": Some systems may need option comment=tomount in their fstab entry ( source). It may then help to append the vboxsf kernel module to /etc/modules. On some systems the vboxsf kernel module is not yet loaded at the time fstab is read on boot. One possibility is to mount with defaults, or to give specific mount options (e.g. Replace name_of_share and /path/to/mountpoint with your individual setup (the directory for the mountpoint has to be created first). Then we may put the following line in our etc/fstab file: /path/to/mountpoint vboxsf 0 0 To mount a shared folder using the vboxsf filesystem provided with Guest Additions we first need to make sure prerequisites are met. It is up to personal preference which option works best in our setting. Still I don't really like doing it that way because I have no idea if extraction using WinRAR in Windows would do anything wrong to some files for use in Linux.To always mount a Virtual Box "shared folder" on booting an Ubuntu guest we have two options. I'm also getting these errors when I try to unzip the tarball with WinRAR on the host end unless I run WinRAR as an administrator. Tar: Exiting with failure status due to previous errors Tar: jdk1.7.0_65/jre/lib/amd64/server/libjsig.so: Cannot create symlink to ‘./libjsig.so’: Read-only file system

Tar: jdk1.7.0_65/jre/bin/ControlPanel: Cannot create symlink to ‘jcontrol’: Read-only file system Tar: jdk1.7.0_65/man/ja: Cannot create symlink to ‘ja_JP.UTF-8’: Read-only file system Tar: jdk1.7.0_65/bin/ControlPanel: Cannot create symlink to ‘jcontrol’: Read-only file system To save space and to avoid having to move files from the guest to the host or vice versa, I have created a shared folder where I keep most my stuff, and it is within that folder that I tried to extract the jdk. I'm running a Kubuntu 17.04 in VirtualBox as a guest OS on a Windows 10 host, because the single disk of my laptop has too many partitions to set up dual boot on it. So I have a project that requires a specific (and modified) version of the jdk, which I am given as a tar.gz.
