My host pc is Mavericks 10.9 with a hfs+ partition which name "android". I install ubuntu 12.04 LTS in Parallels Desktop, and mount "android" as prl_fs in ubuntu . I couldn't make soft in "android",the additional info as bellow: ------mount none on /media/psf type prl_fs (rw,nosuid,nodev,sync,noatime,share,_netdev) ------ll /media drwxr-xr-x 4 root root 4096 Jun 14 15:19 ./ drwxr-xr-x 25 root root 4096 Jun 12 14:18 ../ drwx------ 2 root root 4096 Jun 14 15:19 CDROM/ drwxr-xr-x 1 root root 0 Jun 17 20:45 psf/ ------ll /media/psf/ total 4 drwxr-xr-x 1 root root 0 Jun 17 20:45 ./ drwxr-xr-x 4 root root 4096 Jun 14 15:19 ../ drwxrwxr-x 1 gree gree 578 Jun 16 14:35 android/ drwxr-xr-x 1 gree gree 2176 Jun 17 20:56 Home/ ------ln -s code code1 ln: failed to create symbolic link `code1': Operation not permitted ------ does some edit with /etc/group ? if couldn't make soft link ,so the bunt couldn't make android's source code in ubuntu. if ubuntu use a ext4.hdd img ,it's will take 50min to compile ,that's too long .