Your DOS drives are set up as follows: A: floppy drive (ifit exists) C: points tothe Linux directory ~/.dosemu/drive_c. It containsthe files config.sys, autoexec.bat andadirectoryfor temporary files. It is available for general DOS use. D: points to your Linux home directory E: points to your CD-ROM drive, ifit is mounted at /media/cdrom Z: points totheread-only DOSEMU and FreeDOS commands directory It actually points to ~/mydos/dosemu/drive_z; it appears read-only inside DOSEMU.