Novell SLRS 8 Admin Manual page 106

9 The Boot Process of a Cash Register System
Via PXE network boot or boot manager (GRUB), the cash register boots
the initrd (initrd.gz) that it receives from the branch server. If no PXE
boot is possible, the cash register tries to boot from the hard disk, if
accessible.
Running linuxrc starts the process described below. For a more detailed
information, refer to Chapter
1. The required file systems to receive system data are mounted.
2. The cash register hardware type is detected.
3. The cash register bios version is detected.
4. Network support is activated corresponding to the hardware type of the
cash register.
5. The network interface is set up via DHCP.
6. The TFTP server address is acquired.
7. The configuration file config. MAC Address is loaded from the server
directory /tftpboot/CR via TFTP or a new cash register is immediately
registered.
8. The PART: line in the configuration file is analyzed.
9. The SYNC: line in the configuration file is evaluated.
10. Indicated images are downloaded with multicast TFTP.
11. Checksums are checked and download is repeated if necessary.
12. The CONF: line of the configuration file is evaluated.
13. All the user-land processes based on the boot image are terminated.
14. The cash register image is mounted.
15. The configuration files are copied into the mounted cash register image.
16. The system switches to the mounted cash register image.
17. The boot image is unmounted.
18. The kernel initiates the init process that starts processing the boot scripts.
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15.6 on page 146.