二、如何修改系统的时区？
   先把/etc/TIMEZONE改了。
   把这两行
   #  TZ=xxxxx
   #   export TZ
   写到
   ./etc/profile   里
   在有用户登录就改过来了。

三、硬盘的跳线的几种方式
   1。master  主硬盘
   2。slave   从属硬盘
   3。cable select 线选

四、sun下，机器无法启动，提示无法访问utmpx如何处理？
   进单用户,然后在/var/adm/下touch一个这个文件,属性是
   # ls -l utmpx
   -rw-r--r--   1 root     bin         3720  1月  7 12:36 utmpx

五、我的E450机器在星期日停电中出现问题,系统反复RESETTING,出现Initializing Memory \
                                                   
Boot device: disk  File and args:
|Release 4.0]
Copyright (c) 1983-1999, Sun Microsystems, Inc.
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: hwc_parse: No expansion for class scsi
WARNING: pci6: no portid property
  解决：
  {1} ok  BOOT CDROM -S
  # fsck/dev/rdsk/cxtxdxsx
  # mount /dev/dsk/cxtxdxsx /a
  # cp /etc/driver_classes /a/etc/driver_classes
  # cp /etc/driver_aliases /a/etc/driver_aliases
  #reboot
  重起后发现devfsadmd: fopen failed for /etc/devlink.tab: No such file or   directory
  在/etc下 touch/etc/devlink.tab
  #reboot
  一切OK!