BOOT(HW)

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(095) 932-9212, 932-9213, 939-0783
E-mail: [email protected]

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CIT Forum CD-ROM

BOOT(HW)

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boot - �� UNIX.

��
boot - �� , �� UNIX. �� UNIX, �� , �� . boot �� UNIX � �� UNIX.

�� boot �� , �� . �� , �� , �� reboot, �� , �� . �� haltsys(8).

�� :

�� , �� .
�� /boot �� .
�� /boot �� .

�� :

�� .
�� (boot0) �� (��. fdisk(8)).
��, ��, �� UNIX, �� boot1, �� 2.2 �� UNIX �� . �� UNIX, �� , �� boot1 �� . �� boot1 �� 20 �� 1K.
boot1 �� /boot �� UNIX.
/boot �� .

�� /boot � /kernel �� , �� badtrk(8). �� (masterboot), boot0 � boot1 �� .

�� , �� .

�� boot �� , �� :

  UNIX System V

  Boot
  :

�� . �� , �� . �� , �� (?).

�� :

  xx(m,o)filename

��

  xx(m)filename

��:

xx

m

o

filename

�� . �� (��) �� hd(HW) � fd(HW). �� . �� , �� /etc/default/boot �� .

�� <RETURN> �� , �� "prompt". ��, �� "prompt" � �� <RETURN>, �� boot �� :

  Loaded, press <RETURN>

�� , ��:

   prompt="change diskettes now"

�� boot �� xenix, �� "change diskettes now" � �� <RETURN>. �� prompt, �� "=" � �� , �� . �� <RETURN>, xenix �� . "Prompt" �� , �� /etc/default/boot. �� , �� boot �� , �� .

�� boot � �� , �� <RETURN> � boot �� .

�� UNIX � �� :

   hd(40,0)unix

�� , �� /etc/default/boot, �� <RETURN>, �� , � boot �� , �� DEFBOOTSTR � �� .

�� /etc/default/boot �� LOADUNIX=YES, �� boot �� , �� <RETURN>, �� , �� "auto". (�� LOADUNIX=YES �� TIMEOUT=n, �� boot �� n ��.) boot �� , � �� init(5) �� -a �� "prompt".

�� DOS, �� UNIX. (��. dos(1)). �� DOS �� "Boot" �� UNIX, �� "dos".

�� XENIX �� (masterboot). �� , �� .

�� 
�� boot �� , �� , �� , �� "prompt".

�� , �� , �� . �� /etc/default/boot, �� , �� , �� .

�� , �� :

   dev=xx(m,o)

��

   dev=xx(M)

��:

dev

xx, m, o

�� -�� root, pipe � swap, �� , �� , �� . �� .

�� 
�� , �� systty=x �� SYSTTY=x � �� /etc/default/boot. �� x �� , �� .

�� systty=x, �� boot �� x, �� , �� . �� x �� systty ��:

   sio    ���������������� ���� COM1
   scrn   ������� �������

��, �� , �� COM1, �� :

   systty=sio

�� , �� boot �� :

boot �� /etc/default/boot � �� SYSTTY=x, �� x - ��, �� .
      1  �������� ���������������� ������� ����� COM1.
      0  �������� ������� �������.
�� SYSTTY �� /etc/default/boot �� , �� boot �� .
�� , �� boot �� COM1, �� 9600 ��, 8 �� , �� .

�� , �� , �� COM1, �� /etc/default/boot ��:

  SYSTTY=1

�� 
�� , �� /etc/default/boot. �� , � �� boot �� /etc/default/boot � �� . �� :

   key=file [root=xx9m0 pipe=xx(m) swap=xx(M) prompt[="string"]]

�� dev=xx(m,o), �� o - ��.

��, �� , �� xenix, �� , �� /etc/default/boot �� :

  disk2=hd(40,0)unix root=hd(104,0) prompt="Using second disk"

�� "disk2". �� xenix �� , � �� "Using second disk", �� <RETURN>. �� xenix �� . �� , �� /etc/default/boot � �� , �� boot, � �� - �� .

�� : ��, �� (hd10) � �� . �� :

  hd(104)unix root=hd(104) pipe=hd(104) swap=hd(105)

�� :

  fixperm -c -dHD1 /etc/perms/inst

�� 
�� /etc/default/boot. �� boot �� :

LOADUNIX=YES �� YES, �� boot �� UNIX �� , �� TIMEOUT. �� 60 ��.

DEFBOOTSTR=string C�� string �� , �� . �� DEFBOOTSTR, �� "=" � �� string �� .

SYSTTY=x �� x=1, �� COM1. �� x=0, � �� .

RONLYROOT=NO �� "�� ". �� "yes" �� .

FSCKFIX=YES �� NO �� fsck(8) �� -�� . �� YES, �� fsck(8) �� -rr.

MULTIUSER=YES �� NO �� init(8) sulogin �� .

PANICBOOT=YES �� NO �� panic(). �� init �� /etc/default/boot.

TIMEOUT=n n - �� (�� LOADUNIX=YES).

��
�� . �� :

IO ERR: �� .
BAD TBL: �� .
NO OS: �� , �� .

�� boot �� , �� "Boot". �� :

bad magic number: �� .
can't open <pathname>: �� .
Stage 1 boot failure: �� boot. �� boot � �� .
not a directory: �� UNIX.
zero length directory: �� . �� , �� , �� , �� System V UNIX (� �� ).
fload:read(x)=y: �� x �� y ��. �� -�� . �� (��).

��

 /boot
 /etc/default/boot
 /etc/masterboot
 /etc/hdboot0
 /etc/hdboot1

��. ��
autoboot(8), badtrk(8), fd(HW), fdisk(8), haltsys(8), hd(HW), init(5), sulogin(5)

��
�� . �� , �� .

�� boot �� , �� . �� -A �� UNIX (ld(1)) � �� .

�� , �� . � �� /��, �� .

�� RONLYROOT �� "yes" �� . �� , �� . � �� , �� /etc/default/boot � ��.

Comments: [email protected]
Designed by Andrey Novikov
Copyright © CIT

LOADUNIX=YES	�� YES, �� boot �� UNIX �� , �� TIMEOUT. �� 60 ��.
DEFBOOTSTR=string	C�� string �� , �� . �� DEFBOOTSTR, �� "=" � �� string �� .
SYSTTY=x	�� x=1, �� COM1. �� x=0, � �� .
RONLYROOT=NO	�� "�� ". �� "yes" �� .
FSCKFIX=YES �� NO	�� fsck(8) �� -�� . �� YES, �� fsck(8) �� -rr.
MULTIUSER=YES �� NO	�� init(8) sulogin �� .
PANICBOOT=YES �� NO	�� panic(). �� init �� /etc/default/boot.
TIMEOUT=n	n - �� (�� LOADUNIX=YES).