MOUNT(8) UNIX Programmer's Manual MOUNT(8) NNAAMMEE mount, umount - mount and dismount file system SSYYNNOOPPSSIISS //eettcc//mmoouunntt [ special name [ --rr ] ] //eettcc//mmoouunntt --aa //eettcc//uummoouunntt special //eettcc//uummoouunntt --aa DDEESSCCRRIIPPTTIIOONN _M_o_u_n_t announces to the system that a removable file system is present on the device _s_p_e_c_i_a_l. The file _n_a_m_e must exist already; it must be a directory (unless the root of the mounted file system is not a directory). It becomes the name of the newly mounted root. The optional argument --rr indicates that the file system is to be mounted read-only. _U_m_o_u_n_t announces to the system that the removable file sys- tem previously mounted on device _s_p_e_c_i_a_l is to be removed. If the --aa option is present for either _m_o_u_n_t or _u_m_o_u_n_t, all of the file systems described in /_e_t_c/_f_s_t_a_b are attempted to be mounted or unmounted. In this case, _s_p_e_c_i_a_l and _n_a_m_e are taken from /_e_t_c/_f_s_t_a_b. The _s_p_e_c_i_a_l file name from /_e_t_c/_f_s_t_a_b is the block special name. These commands maintain a table of mounted devices in /_e_t_c/_m_t_a_b. If invoked without an argument, _m_o_u_n_t prints the table. Physically write-protected and magnetic tape file systems must be mounted read-only or errors will occur when access times are updated, whether or not any explicit write is attempted. FFIILLEESS /etc/mtab mount table /etc/fstab file system table SSEEEE AALLSSOO mount(2), mtab(5), fstab(5) BBUUGGSS Mounting file systems full of garbage will crash the system. Mounting a root directory on a non-directory makes some apparently good pathnames invalid. Printed 7/9/88 April 27, 1985 1