So in order to install Solaris 10 on LS21 you need to go to BIOS and:
1) Select "Advanced Setup", and then "PCI Bus Control" and then select the
"PCI Enhanced Configuration Access" option.
2) Press the <> or to select "Enabled".
参考地址:http://milek.blogspot.com/2007/01/solaris-10-on-ibm-ls21.html
另IBM官方也提供了一个解决方法,未测试: 4.1 Installing Sun Solaris 10 Operating System 8/07
To install Sun Solaris 10 Operating System 8/07, complete the following steps:
In order to install Sun Solaris 10 Operating System 8/07 or later:
Turn on the blade server.
When the prompt Press F1 for Configuration/Setupis displayed, press F1.
Select Advanced Setupthen select Baseboard Management Controller (BMC) Settings, and select Reboot System on NMI.
Press the Right Arrow or Left Arrow key until Disabledis selected.
Press Esctwice.
Select Save Settings.
Insert the Solaris 10 Software 1 for x86 Platforms CD into the CD drive and boot the system.