如果由于原始文件损坏或系统未引导而需要在引导过程中指定备用内核或 /etc/system 文件,则以交互方式引导系统非常有用。使用以下过程以交互方式引导系统。
以下过程介绍了在仅有一个引导环境的系统的交互式引导过程中,如何指定备用 /etc/system 文件。或者,可以引导备用引导环境。
# cp /etc/system /etc/system.bak # cp /boot/solaris/filelist.ramdisk /boot/solaris/filelist.ramdisk.orig # echo "etc/system.bak" >> /boot/solaris/filelist.ramdisk
Name of system file [etc/system]: /etc/system.bak
在不提供任何信息的情况下按回车键将接受系统缺省设置。
# reboot
在以下示例中,接受了系统缺省值(显示在方括号 [] 中)。
# init 0 # svc.startd: The system is coming down. Please wait. svc.startd: 121 system services are now being stopped. Apr 22 00:34:25 system-28 syslogd: going down on signal 15 svc.startd: Killing user processes. umount: /home busy Apr 22 06:34:37 The system is down. Shutdown took 18 seconds. syncing file systems... done Program terminated {11} ok boot -a SC Alert: Host System has Reset Sun Fire T200, No Keyboard Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved. OpenBoot 4.30.4.d, 16256 MB memory available, Serial #74139288. Ethernet address 0:14:4f:6b:46:98, Host ID: 846b4698. Boot device: /pci@780/pci@0/pci@9/scsi@0/disk@0,0:a File and args: -a Name of system file [/etc/system]: /etc/system.bak SunOS Release 5.11 Version 11.2 64-bit Copyright (c) 1983, 2014, Oracle and/or its affiliates. All rights reserved. Retire store [/etc/devices/retire_store] (/dev/null to bypass): Press Return system-28 console login:示例 4-17 x86: 以交互方式引导系统
在下面的示例中,以交互方式引导基于 x86 的系统。
root@system-04:~# reboot -p Apr 23 15:37:04 system-04 reboot: initiated by user1 on /dev/consoleTerminated system-04% syncing file systems... done rebooting... . . .LSI Corporation MPT SAS BIOS MPTBIOS-6.26.00.00 (2008.10.14) Copyright 2000-2008 LSI Corporation. Initializing..|Press F2 to runS POPUP (CTRL+P on Remote Keyboard) Press F12 to boot from the network (CTRL+N on Remote Keyboard) System Memory : 8.0 GB , Inc. Auto-Detecting Pri Master..ATAPI CDROM 0078 Ultra DMA Mode-2 GNU GRUB version 1.99,5.11.0.175.1.0.0.14.0 **************************************************************************** *Oracle Solaris 11.2 * * * * * * * * * * * * * * * * * * * * * * * * * **************************************************************************** Use the * and * keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting or 'c' for a command-line. GNU GRUB version 1.99,5.11.0.175.1.0.0.15.1 +--------------------------------------------------------------------------+ | setparams 'Oracle Solaris 11.2' | | | | insmod part_msdos | | insmod part_sunpc | | insmod part_gpt | | insmod zfs | | search --no-floppy --fs-uuid --set=root cd03199c4187a7d7 | | zfs-bootfs /ROOT/s11u2/@/ zfs_bootfs | | set kern=/platform/i86pc/kernel/amd64/unix | | echo -n "Loading ${root}/ROOT/s11u2/@$kern: " | | $multiboot /ROOT/s11u2/@/$kern $kern -B $zfs_bootfs -a | | set gfxpayload="1024x768x32;1024x768x16;800x600x16;640x480x16;640x480x1\ | +--------------------------------------------------------------------------+ Minimum Emacs-like screen editing is supported. TAB lists completions. Press Ctrl-x or F10 to boot, Ctrl-c or F2 for a command-line or ESC to discard edits and return to the GRUB menu. Booting a command list Loading hd0,msdos1,sunpc1/ROOT/s11u2/@/platform/i86pc/kernel/amd64/unix: 0 %...done. Loading hd0,msdos1,sunpc1/ROOT/s11u2/@/platform/i86pc/amd64/boot_archive: 0%... . . . Name of system file [/etc/system]: /etc/system.bak SunOS Release 5.11 Version 11.s 64-bit Copyright (c) 1983, 2014, Oracle and/or its affiliates. All rights reserved.: 0 Retire store [/etc/devices/retire_store] (/dev/null to bypass): Press Return NOTICE: kmem_io_2G arena created Hostname: system-04 system-04 console login: