wiki:TipAndDoc/boot/PXE/pxelinux

Version 4 (modified by mitty, 14 years ago) (diff)

--

  1. syslinux
    1. 'include' chain
      1. fixit

syslinux

  • ​Continue HD boot option? | syslinux | users 
    from syslinux.doc inside the syslinux package (did you read the doc?) 

LOCALBOOT type [ISOLINUX, PXELINUX] 
On PXELINUX, specifying "LOCALBOOT 0" instead of a "KERNEL" 
option means invoking this particular label will cause a local 
disk boot instead of booting a kernel. 
The argument 0 means perform a normal boot. The argument 4 
will perform a local boot with the Universal Network Driver 
Interface (UNDI) driver still resident in memory. Finally, 
the argument 5 will perform a local boot with the entire PXE 
stack, including the UNDI driver, still resident in memory. 
All other values are undefined. If you don't know what the 
UNDI or PXE stacks are, don't worry -- you don't want them, 
just specify 0. 
On ISOLINUX, the "type" specifies the local drive number to 
boot from; 0x00 is the primary floppy drive and 0x80 is the 
primary hard drive. The special value -1 causes ISOLINUX to 
report failure to the BIOS, which, on recent BIOSes, should 
mean that the next boot device in the boot sequence should be 
activated. 

This labels forks for me on isolinux.cfg : 

label harddisk 
localboot 0x80 
append SLX=0x80 

label floppy 
localboot 0x00 
append SLX=0x00 

except on some weird Compaq BIOSes, Works. 
And the append line I can't remember where it cames from, should work without 
it, I guess some patch for gfxboot that I still using for impress.

'include' chain

  • include <filename> で別のファイルに書かれたsyslinuxの設定を読み込むことが出来る
  • その場合、各設定ファイルでの<filename>のパスは一致している必要がある
    • PXE bootでの例
      1. dhcpd.conf 
                filename "/pxelinux.0";
      2. /srv/tftp/pxelinux.cfg/default 
        LABEL lucid-amd64
include lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg
default lucid-amd64/ubuntu-installer/amd64/boot-screens/vesamenu.c32
      3. /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg 
        (snip)
include ubuntu-installer/amd64/boot-screens/stdmenu.cfg
include ubuntu-installer/amd64/boot-screens/text.cfg
(snip)
        • この時点で「ubuntu-installer/amd64/boot-screens/」とパスが変わっているため、正常に読み込まれない
      4. /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/stdmenu.cfg (<= 正常に読み込まれない) 
        menu background ubuntu-installer/amd64/boot-screens/splash.png
(snip)
        • splash.pngを指定しているstdmenu.cfgが正常に読み込まれないため、Ubuntuのロゴは表示されない
      5. /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/text.cfg (<= 正常に読み込まれない) 
        default install
label install
        menu label ^Install
        menu default
        kernel ubuntu-installer/amd64/linux
        append vga=normal initrd=ubuntu-installer/amd64/initrd.gz -- quiet
        • text.cfgも正常に読み込まれないため、kernelが指定できず、画面には以下のように表示される。 
          Invalid or corrupt kernel image.
boot:
      6. /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg に戻る
      7. 以上を無限ループする
        • /var/log/daemon.log 
          Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /pxelinux.0 to 192.168.XYZ.253:2070
(snip)

Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /pxelinux.cfg/default to 192.168.XYZ.253:57099
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg to 192.168.XYZ.253:57100
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/stdmenu.cfg to 192.168.XYZ.253:57101
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/text.cfg to 192.168.XYZ.253:57102
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/amdtext.cfg to 192.168.XYZ.253:57103
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/gtk.cfg to 192.168.XYZ.253:57104
(snip)

Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/adgtk.cfg to 192.168.XYZ.253:57109
Dec  5 15:14:27 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/adamdgtk.cfg to 192.168.XYZ.253:57110
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /lucid-amd64/ubuntu-installer/amd64/boot-screens/vesamenu.c32 to 192.168.XYZ.253:57111
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /pxelinux.cfg/default to 192.168.XYZ.253:57112
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg to 192.168.XYZ.253:57113
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/stdmenu.cfg to 192.168.XYZ.253:57114
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/text.cfg to 192.168.XYZ.253:57115
Dec  5 15:14:30 ubuntu atftpd[5092]: Serving /ubuntu-installer/amd64/boot-screens/amdtext.cfg to 192.168.XYZ.253:57116

fixit

  • /srv/tftp/pxelinux.cfg/defaultを以下のように修正し、includeされる設定ファイルとそろえる 
    LABEL lucid-amd64
include ubuntu-installer/amd64/boot-screens/menu.cfg
default ubuntu-installer/amd64/boot-screens/vesamenu.c32
  • /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfgなどのパスを、変更する
    • /srv/tftp$ sudo mv lucid-amd64/ubuntu-installer . 
      /srv/tftp/lucid-amd64/ubuntu-installer/amd64/boot-screens/menu.cfg
↓
/srv/tftp/ubuntu-installer/amd64/boot-screens/menu.cfg