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34 .Nd system bootstrapping procedures
38 .Ss Power fail and crash recovery
39 Normally, the system will reboot itself at power-up or after crashes.
40 An automatic consistency check of the file systems will be performed
43 and unless this fails, the system will resume multi-user operations.
45 The prep architecture does not allow the direct booting of a kernel
47 Instead it requires a complete boot image to be loaded.
48 This boot image contains a
50 kernel, which will then provide access to the devices on the machine.
51 The image can be placed on any device that the firmware considers
53 Usually this is either a SCSI disk, tape, CD-ROM, or floppy drive.
54 .Ss Boot program options
55 The prep architecture and bootloader does not support any option
56 parsing at the boot prompt.
58 The prep port requires a special boot partition on the primary boot
59 device in order to load the kernel.
60 This partition consists of a PC-style i386 partition label, a small
61 bootloader, and a kernel image.
62 The prep firmware looks for a partition of type 0x41 (65) and
63 expects the bootloader, immediately followed by the kernel, to be
67 command needs to be used to generate this image.
69 .Bl -tag -width /usr/mdec/boot_com0xx -compact
74 .It Pa /usr/mdec/boot_com0
75 system bootstrap with serial console