1994-07-21 00:47:02 +04:00
|
|
|
The sparc bootblocks are split into two parts: a small 1st-level program that
|
|
|
|
|
gets written right after the superblock in a partition (and is hence limited
|
|
|
|
|
in size to SBSIZE - DEV_BSIZE bytes), and a 2nd-level program that resides
|
|
|
|
|
in the filesystem proper.
|
1994-02-26 14:04:02 +03:00
|
|
|
|
1994-07-21 00:47:02 +04:00
|
|
|
The 1st-level program is loaded into memory by the PROM. It loads the second
|
|
|
|
|
stage program from a set of filesystem block numbers that are hard-coded
|
|
|
|
|
into it by the `installboot' program. The prototype code for the 1st-level
|
|
|
|
|
bootblocks are in `bootxx'.
|
1994-02-26 14:04:02 +03:00
|
|
|
|
1994-07-21 00:47:02 +04:00
|
|
|
The 2nd-level program (`boot') is normally installed in the root directory
|
|
|
|
|
as `/boot'. It uses the device drivers in the PROM and the stand-alone
|
|
|
|
|
filesystem code in `libsa.a' to locate and load the kernel.
|
1994-02-26 14:04:02 +03:00
|
|
|
|
1994-07-21 00:47:02 +04:00
|
|
|
Use the following command to install the 1st-level bootblocks in the
|
|
|
|
|
root filesystem (on `sd0a') using the file `/boot' as the second level
|
|
|
|
|
boot program:
|
1994-02-26 14:04:02 +03:00
|
|
|
|
1994-07-21 00:47:02 +04:00
|
|
|
installboot /boot bootxx /dev/rsd0a
|
