固件无法识别引导磁盘。
在引导AIX分区时，固件可能无法识别引导磁盘。
When AIX partition boots, the firmware may not recognize the boot disk.
在这我将介绍如何使用一个Linux紧急引导磁盘实现您的更改。
Therefore, I describe how to implement your changes using a Linux emergency disc.
为了确保引导磁盘和引导列表已被正确配置，我将重新引导系统以便验证。
To ensure that the boot disk and boot list had been configured correctly, I would reboot the system to verify.
为了确保引导磁盘已成功迁移，我们必须能够在这个新的磁盘上引导此系统。
To ensure that the boot disk has migrated successfully we must make sure that we can boot the system on the new disk.
定义引导磁盘后，您现在可以引导此磁盘，这会导致启动UNIXV 6图像。
With the boot disk defined, you can now boot this disk, which results in starting the UNIX V6 image.
因此，您可能需要从一个紧急引导磁盘来进行这些操作，如本系列第1部分所述。
Thus, you may need to do this from an emergency boot disc, as described in Part 1 of this series.
如果您使用一个紧急引导磁盘，比起常规安装它可能支持不同的选项，稍后将介绍。
If you use an emergency disc, as described shortly, it may support different options than your regular installation does.
使用备用引导磁盘事，您可以在主磁盘上发生文件系统问题时创建另一个引导磁盘进行使用。
With an alternate boot disk, you create another bootable disk to use in the event of a file system problem on the primary disk.
关于第一次尝试LILO的最后一点建议是：我发现使用软盘引导磁盘比使用硬盘实现LILO配置更为安全。
A final word of advice when trying out LILO for the first time: I found it a lot safer to work out my LILO configuration using a floppy boot disk rather than my hard disk.
这会涉及严重的问题：即为了直接引导磁盘，您的BIOS必须支持通过FireWire或usb连接的磁盘。
This has a very serious implication: namely, that in order to boot the disk directly, your BIOS must support disks connected via FireWire or USB.
注意图1是从一个紧急引导磁盘获取的，因此MountPoint列不能反映正在运行的系统挂载点。
Note that Figure 1 was obtained from an emergency boot disc, so the mount point column doesn't reflect the running system's mount points.
那样，如果弄乱了lilo.conf文件中的任何配置，都可以取出引导磁盘并像先前一样引导到Linux。
That way, if I messed up any of the configuration in my lilo.conf file, I could take out the boot disk and boot into Linux as before.
所有的PC系统都是通过执行rom(明确地说，BIOS)中的代码从引导磁盘的0柱面0扇区加载扇区，从而开始引导过程。
All PC systems start the boot process by executing code in ROM (specifically, the BIOS) to load the sector from sector 0, cylinder 0 of the boot drive.
实际上，我在以后的一次POWER 6升级中测试了这种方法，它与从磁盘引导同样有效。
In fact, I tested this on a subsequent POWER6 upgrade and it worked equally well as just booting from disk.
如果我选择了错误的磁盘，就会引导了错误的系统。
当引导连接的磁盘时很简单地进入了BIOS设置程序。
Simply enter the BIOS setup utility while booting with the disk connected.
它不包括一个图形化用户界面(GUI)，以及作为一个RAM磁盘默认引导；因此当您拔掉电源时您所作的改变都将丢失。
It does not contain a graphical user interface (GUI) and boots by default as a RAM disk; thus any changes you make are lost when you unplug.
有三类主要的软件需要GPT支持：内核、引导装载程序和低级别磁盘工具。
Three main classes of software all require GPT support: the kernel, the boot loader, and low-level disk utilities.
这些工具可以让您用一个特殊磁盘来引导系统，并可以动态地重新调整分区和文件系统的大小。
These tools allow you to boot your system with a special disk and dynamically resize your partitions and filesystems.
这个版本的GRUB不支持GPT，但是，针对这个版本的 GPT 支持补丁很普遍。因此，如果您安装的是 GRUB 0.97 版，您也许能够或不能够从 GPT 磁盘引导。
This version of GRUB is not GPT-aware; however, patches to this version with GPT support are common, so if you install GRUB version 0.97, you might or might not be able to boot from GPT disks.
遗憾的是，许多需要主分区的操作系统都不能从GPT磁盘引导。
Unfortunately, many of the operating systems that require primary partitions are unable to boot from GPT disks.
通常，在对磁盘进行镜像或改变引导设备之后使用这个命令。
Typically, you use this command after mirroring disks or changing boot devices.
如果由于某种原因从磁盘引导不成功，我就采用备用计划。
If booting from disk had been unsuccessful, for whatever reason, I would have instigated Plan b.
这通常可以看作从这些类型的磁盘引导的一个BIOS选项。
This can typically be seen as a BIOS option to boot from these types of disk.
如果在迁移的这个时候需要重启系统，我就能有把握能从任一磁盘引导。
If I needed to restart the system at this point in the migration, I could be assured that I could boot from either disk.
可以使用这个命令让系统从CD、磁盘、网络或其他设备引导。
You can use this command to tell the system to boot from CD, disk, the network, or other devices.
系统从SAN磁盘引导。
分区表位于磁盘主引导记录（MBR）之中。
The partition table is located in the master boot record (MBR) of a disk.
如果您打算从LVM或RAID磁盘引导，也需要拥有比较新的GRUB 或LILO版本。
You will also need a fairly recent version of either GRUB or LILO if you plan to boot from an LVM or RAID disk.
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