Could PowerPC(IBM power blade, js 21, 8844) boot via usb key?

[Kelvin Lin]

Hi guys,
   
  I created a PReP partition in usb key and then did "dd" and something like that to configure yaboot on it.
   
  But the key point is that, when I boot power blade, there is not usb key in the bootable list. I mean, there are just:
   1.        -      Ethernet
                  ( loc=U788D.001.99DXC6K-P1-T7 )
 2.        -      Ethernet
                  ( loc=U788D.001.99DXC6K-P1-T8 )
 3.        -      USB CD-ROM
                  ( loc=U788D.001.99DXC6K-P1-T1-L1-L3 )
 4.        1      SCSI 36401 MB Harddisk, part=1 ()
                  ( loc=U788D.001.99DXC6K-P1-T10-L1-L0 )
   
  My usb key is Kingston's DataTraveler 2GB.
   
  Then I change another Sandisk cruzer 2GB usb key, it shows as follows in the boot menu:
   
   1.        -      Ethernet
                  ( loc=U788D.001.99DXC6K-P1-T7 )
 2.        -      Ethernet
                  ( loc=U788D.001.99DXC6K-P1-T8 )
 3.        -      USB CD-ROM
                  ( loc=U788D.001.99DXC6K-P1-T1-L1-L3 )
 4.        1      SCSI 36401 MB Harddisk, part=1 ()
                  ( loc=U788D.001.99DXC6K-P1-T10-L1-L0 )
 5.        -      USB CD-ROM
                  ( loc=U788D.001.99DXC6K-P1-T1-L1-L2-L1-L0 )

  But this item 5 USB CD-ROM is simulated by Sandisk, not the actual usb key. I can't boot my server via item 5.
   
  Could IBM power blade, js 21, 8844 boot via usb key? If not, could you please provide official doc to prove it. Because I have to persuade my boss to give up it. -:)
   
  Any comment is appreciated. Thanks a lot in advanced.
   
  Kelvin.

       
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