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Solaris + WinXP Pro双启动的点滴心得( 二 )

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Step 3: Installing Solaris 8

Put in the Solaris installation media and boot. The Solaris installation sequence should come right up. Run fdisk to establish partition 2 for Solaris. A catch in this step is the boundary cylinders on the hard drive. Give yourself a couple of cylinders buffer between the end of the your Windows partition and where you start the Solaris partition. Also allow some buffer between the end of your Solaris partition and the start of your Linux partition. I use a rule of thumb of two cylinders on each side. If you don"t add this buffer, your installation will fail. Install what you want on partition 2. Note that Solaris will divide partition 2 into partitions 2 and 3 during the install. Late in the install process, you will have a chance to look at the filesystem layout. Partition 2 will be sliced up into / in s0, swap in s1, overlap will be in s2, and /export/home in s7. These four slices are the reason that in Step 2a we added four to several lines. After the Solaris install, Linux will see hda5 as hda9. If you use more than four slices in Solaris, you will have to modify Step 2a as appropriate. Reboot. Study Listing 3 to see what the partition table looks like after the Solaris installation, especially the cylinder buffers around the Solaris partitions.

Step 4: Boot Manager

Now you have three operating systems on your computer, but you can only access Windows and Solaris. We"ll fix this by configuring LILO to give you all three. First, start a Linux install again and bring it to the point of partitioning the hard drive. Use fdisk and re-establish the partitions you previously deleted. Make sure you put the exact cylinder numbers in. You will probably have an option to use disk druid but use fdisk. Disk druid is a friendly disk partitioner, but it doesn"t give you the cylinder control you need right now. You will see several messages about partitions having different logical and physical beginnings. This doesn"t matter to us. Save the updated disk partitions and reboot using the boot floppy you made. Type linux root=/dev/hda9 at the LILO: prompt and log in. Edit /etc/lilo.conf, adding the lines other=/dev/hda3 and label=solaris to the end of it. Then run LILO using a special option: lilo -P ignore. The -P ignore option tells LILO to ignore any partition tables that it considers corrupt, which we have because of Solaris.

Using Your Triple-Boot Machine

Now you have a machine that can run Windows, Linux, and Solaris. When you turn it on, you will see the normal BIOS prompts and finally get a prompt LILO:. If you hit the tab key quickly, you will see the different operating systems available. Type in which one you want, and hit enter. The machine will then boot as if that OS is the only one on the machine. You will have to reboot to get to a different one. Still, this approach gives you three machines in the space of one, and it is free. You have only used tools that were part of the various operating systems.

Many of the steps may look like the ravings of a madman, but once you understand the impact of the various operating systems, especially Solaris, they make more sense. It"s easy to set up a system to dual boot. Windows and Linux or Windows and Solaris set up easily, provided the hardware is supported. The hard part is when you want to combine Linux and Solaris 8. As a historical note, I"ve been setting up machines to triple boot for years. With Solaris 7, it was easier in some regards. Linux didn"t give the error messages that you see working with Solaris 8, and it stayed in one primary partition. The biggest catch was that a native Solaris partition looks like a swap partition to Linux. This normally isn"t a problem, but with Red Hat 6.2 and some other distributions, you have no control over which swap space is used.

The Linux install will reformat any swap partition it finds. This means that your Solaris distribution is gone and is being used as a Linux swap space, so I hope you have a backup. With Solaris 2.7, I would install Windows, then Solaris, and then Linux. During the Linux install, I would change the partition type of Solaris to something like FAT32 and complete the install. That way, the Linux installation would leave that fake Windows partition containing Solaris alone. After I finished and rebooted, I would change it back and set up LILO to boot the three systems. Solaris 8 invalidates this trick. If you change anything about the Solaris partitions using fdisk, you mess up Solaris" boot signature and it won"t come up. As a sidenote, this last statement might not be totally true. I"ve used Linux"s fdisk to manage the partitions. Some versions of Linux also have cfdisk and sfdisk. These are more powerful and also harder to use partitioning tools. These tools might be able to reslice the partition so that Solaris still works. Since they aren"t universal, I didn"t explore using them. Also, Linux can"t install on a disk with the type of cylinder boundary problems that Solaris 8 creates. In other Words, Solaris can"t be installed before Linux.

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