#2602 BLOC Trial-3: Upgrade failed when trying to backup data

[Zarro Boogs per Child]

#2602: Upgrade failed when trying to backup data
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  Reporter:  kimquirk  |       Owner:  cscott 
      Type:  defect    |      Status:  new    
  Priority:  blocker   |   Milestone:  Trial-3
 Component:  distro    |     Version:         
Resolution:            |    Keywords:         
  Verified:  0         |  
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Comment (by kimquirk):

 Also, I tried this on two machines that had been upgraded to 539 by using
 this same latest process. So you may need to upgrade to 539, then upgrade
 to 540. Both machines ended in a kernel panic.

 I got them back to working order by telling the fth file NOT to back up
 first.

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Ticket URL: <https://dev.laptop.org/ticket/2602#comment:2>
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