man yaboot.conf に よれば
...
Device name syntax is:
<fully_qualified_prom_device_name>[:<part_number>]
where the fully qualified OpenFirmware device name starts with a
/ character for the root of the OpenFirmware device tree and
contains all the nodes from the root in the tree up to the disk
device node. If some node contains more than one child node with
the same name and the path has to go through such node, a @
character followed by hexadecimal address pair is desirable to
resolve the ambiguity. Optional partition number is a number
that follows the : character 1 (for first partition) 2 (for sec-
ond, partition, etc). OpenFirmware device names might look like:
/pci@80000000/pci-bridge@d/ADPT,2930CU@2/@0:
/pci/@d/mac-io/ata-3@20000/disk@1:
/pci/@d/pci-ata@1/ata-4@0/disk@0:
/pci/@d/pci-ata@1/ata-4@0/disk@1:
OpenFirmware device names if specified as part of the file name
(see above) should be followed by the : character to separate
the device name from the optional Linux partition number, as
shown above. For more information on this topic, consult boot-
strap(8).
OpenFirmware also has some predefined aliases which are used
instead of the longer canonical device names. Standard aliases
include:
hd: - The primary master IDE hard disk.
ultra1: - The primary slave IDE hard disk.
cd: - The secondary master device (usually CDROM).
zip: - The secondary slave device (usually zip drive).
...
これも 個猫 の 勝手な 決めつけ /dev/sda2 が ofboot で 決めて有ったの で /dev/sda4 は
ofboot=/pci@f2000000/usb@19/disk@1:2
2 を 4 に 変えるだけで良いでしょう。
device=/pci@f2000000/usb@19/disk@1:4
にゃんたろう 拝！
2011年12月15日 (木) 21:09:22 JST 作成