This chapter describes how to configure the system's Firmware to use the hardware properly. To do this we are going to use a software tool from IBM called System Management Services, SMS.
Lots of Linux users are familiar with the x86 platform, and immidiatly ask "What key may I press to access the BIOS". Well, on the 7248 it's not that easy, but it's not very difficult either. This is a real UNIX machine, and real UNIX machines don't have a BIOS. They have some sort of Firmware instead. There is not much to yell about, 'cause to the users, it's almost the same thing. Firmware often seem to have lots of bugs in them, just like the BIOSes in the PC world. They often are more selective on what kind of hardware they support too. For hardware system management on our 7248, IBM has a software program to be booted from floppy disk, called "SMS" - "System Management Services". With this you can access the Firmware. You can get images for SMS and for updated firmware here. You should select MS-DOS images from the menu. They are actually zip-files in disguise, so you should be able to make those disks from a Linux box as well, using unzip and mtools. (If you feel totally lost on this, I wrote a quick help, look in Section 17)
To boot the SMS, turn off the machine, insert the SMS floppy, push the power button and press the F4 key while the system check icons pop up in the bottom of the screen. (If you prefer a text based interface, try F2 instead.) Basic usage is outside the scope of this document, but it's not very difficult.
You should have a little look over your system to see whats actually there. Then you should check the boot sequence, as it's quite important to make your system boot right. The sequence should be: (You guessed it) Floppy disk -> CD-player -> first SCSI harddisk -> second SCSI harddisk -> etc.
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