#10550 NORM 1.75-so: XO-1.75 os1 panic on missing rootfs if external SD card present

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#10550: XO-1.75 os1 panic on missing rootfs if external SD card present
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           Reporter:  Quozl     |       Owner:  buytenh      
               Type:  defect    |      Status:  new          
           Priority:  normal    |   Milestone:  1.75-software
          Component:  kernel    |     Version:  not specified
         Resolution:            |    Keywords:               
        Next_action:  diagnose  |    Verified:  0            
Deployment_affected:            |   Blockedby:               
           Blocking:            |  
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Comment(by buytenh):

 I assume that the kernel panic is due to it trying to mount the wrong
 (i.e. internal) SD?

 If yes, then the real issue is that /dev/* nodes are not stable device
 identifiers, and booting with root=/dev/foo0 is inherently ambiguous if
 there are two of foo.  Possible solutions are specifying the root device
 by label/uuid, or maybe to reorder initialisation of the two SD interfaces
 (although that doesn't 100% guarantee stable device identifiers either).

 If no, please attach the panic message.

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Ticket URL: <http://dev.laptop.org/ticket/10550#comment:3>
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