11.3Sisaki$NetBSD: README,v 1.3 2020/08/16 07:25:51 isaki Exp $ 21.1Sisaki 31.1SisakiPrimary bootloaders: 41.1Sisaki boot_ufs/ 51.1Sisaki contains xxboot_ufs. 61.1Sisaki It is placed in ffs's boot area and loads secondary bootloader 71.1Sisaki from its filesystem (ffsv1/v2). 81.3Sisaki This historical primary bootloader uses custom ffs op 91.3Sisaki functions. 101.1Sisaki 111.1Sisaki xxboot/ 121.1Sisaki contains following variants. 131.1Sisaki * cdboot_cd9660 141.1Sisaki is placed in CD and loads secondary bootloader 151.1Sisaki from cd9660 filesystem. 161.2Sisaki * fdboot_ustarfs 171.2Sisaki is placed in floppy's sector#0 and loads secondary 181.2Sisaki bootloader from subsequent USTARFS. 191.1Sisaki * xxboot_ffsv1 201.1Sisaki * xxboot_ffsv2 211.1Sisaki * xxboot_lfsv1 221.1Sisaki * xxboot_lfsv2 231.1Sisaki is placed in each specified filesystem's boot area, 241.1Sisaki and loads secondary bootloader from its filesystem. 251.1Sisaki 261.1Sisaki These primary bootloaders use MI ffs/lfs op functions in 271.3Sisaki src/sys/lib/libsa. 281.1Sisaki 291.1SisakiSecondary bootloaders: 301.1Sisaki boot/ 311.1Sisaki boot is placed to / (root directory) and loads the kernel. 321.1Sisaki 331.1Sisaki netboot/ 341.1Sisaki netboot is the same as /boot except default boot device is 351.1Sisaki nfs using network interface and DHCP. 361.1Sisaki Currently only NE2000 based Neptune-X and Nereid are 371.1Sisaki supported. 381.1Sisaki 391.1SisakiOther bootloaders: 401.1Sisaki mboot/ 411.1Sisaki mboot is 0-th bootloader. 421.1Sisaki It is placed to sector#0 (as 1024byte/sector) of hard disk 431.1Sisaki as an alternative to genuine boot selector. And loads 441.1Sisaki active partition's +0 sector (sector size depends media) 451.1Sisaki which should have primary bootloader. 461.1Sisaki 471.1Sisaki loadbsd/ 481.1Sisaki loadbsd.x is a Human68k executable and loads the kernel from 491.1Sisaki Human68k filesystem. 501.1Sisaki 511.1SisakiUtility tools: 521.1Sisaki newdisk/ 531.1Sisaki newdisk is a utility to create the "disk mark" for X680x0 541.1Sisaki SCSI IPL using mboot bootloader to make a disk bootable. 55