4.4BSD/usr/share/man/cat8/boot_hp300.0

BOOT_HP300(8)             BSD System Manager's Manual            BOOT_HP300(8)

NNAAMMEE
     bboooott - system bootstrapping procedures

DDEESSCCRRIIPPTTIIOONN
     PPoowweerr ffaaiill aanndd ccrraasshh rreeccoovveerryy.. Normally, the system will reboot itself at
     power-up or after crashes.  An automatic consistency check of the file
     systems will be performed, and unless this fails, the system will resume
     multi-user operations.

     CCoolldd ssttaarrttss.. On an HP300, the boot procedure uses the boot ROM to load a
     boot program from an LIF format directory at the beginning of an attached
     disk.  The _/_u_s_r_/_m_d_e_c directory contains a disk boot programs which should
     be placed in a new pack automatically by newfs(8) when the ``a'' parti-
     tion file system on the pack is created.

     This _b_o_o_t program finds the corresponding file on the given device
     (_v_m_u_n_i_x by default), loads that file into memory, and starts the program
     at the entry address specified in the program header.

     The boot program can be interrupted by typing `^C' (ctrl-C).  This will
     force the boot program to interactively prompt for a system to boot.  If
     not interrupted, it will boot from the device from which the boot program
     itself was loaded.

     The file specifications used for an interactive boot are of the form:

           device(unit, minor)

     where _d_e_v_i_c_e is the type of the device to be searched, _u_n_i_t is 8 * the
     hpib number plus the unit number of the disk or tape, and _m_i_n_o_r is the
     disk partition or tape file number.  Normal line editing characters can
     be used when typing the file specification.  Currently, ``rd'' and ``sd''
     are the only valid _d_e_v_i_c_e specifiers.

     For example, to boot from the `a' file system of unit 0 on HP-IB 2, type
     `rd(16, 0)vmunix' to the boot prompt.  For tapes, the minor device number
     gives a file offset.

     In an emergency, the bootstrap methods described in the paper _I_n_s_t_a_l_l_i_n_g
     _4_._3_b_s_d _o_n _t_h_e _H_P_3_0_0 can be used to boot from a distribution tape.

FFIILLEESS
     /vmunix                system code
     /usr/mdec/bootrd       LIF format boot block
     /usr/mdec/installboot  program to install boot blocks

SSEEEE AALLSSOO
     halt(8),  reboot(8),  shutdown(8)

4.4BSD                           June 9, 1993                                1