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Annotation of wikisrc/ports/xen/howto-grub.mdwn, revision 1.3

1.1       gdt         1: Stray Grub notes
                      2: ================
                      3: 
                      4: Now, the use of NetBSD's normal boot code is recommended.  This file
1.2       gdt         5: exists to save stray text about grub.  Note that it is far far easier
                      6: to use the native boot code, and that you probably should not be
                      7: reading this.
1.1       gdt         8: 
1.3     ! gdt         9: Converting from grub to /boot
        !            10: -----------------------------
        !            11: 
        !            12: These instructions are provided only to help people using grub, which
        !            13: used to be the normal approach.
        !            14: 
        !            15: These instructions were used to convert a system from
        !            16: grub to /boot.  The system was originally installed in February of
        !            17: 2006 with a RAID1 setup and grub to boot Xen 2, and has been updated
        !            18: over time.  Before these commands, it was running NetBSD 6 i386, Xen
        !            19: 4.1 and grub, much like the message linked earlier in the grub
        !            20: section.
        !            21: 
        !            22: [[!template id=programlisting text="""
        !            23: # Install MBR bootblocks on both disks.
        !            24: fdisk -i /dev/rwd0d
        !            25: fdisk -i /dev/rwd1d
        !            26: # Install NetBSD primary boot loader (/ is FFSv1) into RAID1 components.
        !            27: installboot -v /dev/rwd0d /usr/mdec/bootxx_ffsv1
        !            28: installboot -v /dev/rwd1d /usr/mdec/bootxx_ffsv1
        !            29: # Install secondary boot loader
        !            30: cp -p /usr/mdec/boot /
        !            31: # Create boot.cfg following earlier guidance:
        !            32: menu=Xen:load /netbsd-XEN3PAE_DOM0.gz console=pc;multiboot /xen.gz dom0_mem=512M
        !            33: menu=Xen.ok:load /netbsd-XEN3PAE_DOM0.ok.gz console=pc;multiboot /xen.ok.gz dom0_mem=512M
        !            34: menu=GENERIC:boot
        !            35: menu=GENERIC single-user:boot -s
        !            36: menu=GENERIC.ok:boot netbsd.ok
        !            37: menu=GENERIC.ok single-user:boot netbsd.ok -s
        !            38: menu=Drop to boot prompt:prompt
        !            39: default=1
        !            40: timeout=30
        !            41: """]]
        !            42: 
1.1       gdt        43: Install
                     44: -------
                     45: 
                     46: If you plan to use the `grub` boot loader, when partitioning the disk
                     47: you have to make the root partition smaller than 512Mb, and formatted
                     48: as FFSv1 with 8k block/1k fragments. If the partition is larger than
                     49: this, uses FFSv2 or has different block/fragment sizes, grub may fail
                     50: to load some files.
1.2       gdt        51: 
                     52: You'll also need `sysutils/grub` from pkgsrc.
                     53: 
                     54: Grub config
                     55: -----------
                     56: 
                     57:     #Grub config file for NetBSD/xen. Copy as /grub/menu.lst and run
                     58:     # grub-install /dev/rwd0d (assuming your boot device is wd0).
                     59:     #
                     60:     # The default entry to load will be the first one
                     61:     default=0
                     62: 
                     63:     # boot the default entry after 10s if the user didn't hit keyboard
                     64:     timeout=10
                     65: 
                     66:     # Configure serial port to use as console. Ignore if you'll use VGA only
                     67:     serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
                     68: 
                     69:     # Let the user select which console to use (serial or VGA), default
                     70:     # to serial after 10s
                     71:     terminal --timeout=10 serial console
                     72: 
                     73:     # An entry for NetBSD/xen, using /netbsd as the domain0 kernel, and serial
                     74:     # console. Domain0 will have 64MB RAM allocated.
                     75:     # Assume NetBSD is installed in the first MBR partition.
                     76:     title Xen 3 / NetBSD (hda0, serial)
                     77:       root(hd0,0)
                     78:       kernel (hd0,a)/xen.gz dom0_mem=65536 com1=115200,8n1
                     79:       module (hd0,a)/netbsd bootdev=wd0a ro console=ttyS0
                     80: 
                     81:     # Same as above, but using VGA console
                     82:     # We can use console=tty0 (Linux syntax) or console=pc (NetBSD syntax)
                     83:     title Xen 3 / NetBSD (hda0, vga)
                     84:       root(hd0,0)
                     85:       kernel (hd0,a)/xen.gz dom0_mem=65536
                     86:       module (hd0,a)/netbsd bootdev=wd0a ro console=tty0
                     87: 
                     88:     # NetBSD/xen using a backup domain0 kernel (in case you installed a
                     89:     # nonworking kernel as /netbsd
                     90:     title Xen 3 / NetBSD (hda0, backup, serial)
                     91:       root(hd0,0)
                     92:       kernel (hd0,a)/xen.gz dom0_mem=65536 com1=115200,8n1
                     93:       module (hd0,a)/netbsd.backup bootdev=wd0a ro console=ttyS0
                     94:     title Xen 3 / NetBSD (hda0, backup, VGA)
                     95:       root(hd0,0)
                     96:       kernel (hd0,a)/xen.gz dom0_mem=65536
                     97:       module (hd0,a)/netbsd.backup bootdev=wd0a ro console=tty0
                     98: 
                     99:     #Load a regular NetBSD/i386 kernel. Can be useful if you end up with a
                    100:     #nonworking /xen.gz
                    101:     title NetBSD 5.1
                    102:       root (hd0,a)
                    103:       kernel --type=netbsd /netbsd-GENERIC
                    104: 
                    105:     #Load the NetBSD bootloader, letting it load the NetBSD/i386 kernel.
                    106:     #May be better than the above, as grub can't pass all required infos
                    107:     #to the NetBSD/i386 kernel (e.g. console, root device, ...)
                    108:     title NetBSD chain
                    109:       root        (hd0,0)
                    110:       chainloader +1
                    111: 
                    112:     ## end of grub config file.
                    113: 
                    114: Install grub with the following command:
                    115: 
                    116:     # grub --no-floppy
                    117: 
                    118:     grub> root (hd0,a)
                    119:      Filesystem type is ffs, partition type 0xa9
                    120: 
                    121:     grub> setup (hd0)
                    122:      Checking if "/boot/grub/stage1" exists... no
                    123:      Checking if "/grub/stage1" exists... yes
                    124:      Checking if "/grub/stage2" exists... yes
                    125:      Checking if "/grub/ffs_stage1_5" exists... yes
                    126:      Running "embed /grub/ffs_stage1_5 (hd0)"...  14 sectors are embedded.
                    127:     succeeded
                    128:      Running "install /grub/stage1 (hd0) (hd0)1+14 p (hd0,0,a)/grub/stage2 /grub/menu.lst"...
                    129:      succeeded
                    130:     Done.