= How to create a core dump = A core dump is very helpful for helping us tracking down crashes of !VirtualBox. To create a core dump, start !VirtualBox from a command line (e.g. xterm): {{{ ulimit -c unlimited VirtualBox }}} Ensure that no startup script (`~/.bashrc`, `~/.bash_profile`, `~/.profile`) contains an instruction like `ulimit -c 0` as the limit cannot be increased once it was set to zero.