[Bug 875890] Re: OSError: [Errno 17] File exists: '/target/var/lock'

[Brian Murray]

*** This bug is a duplicate of bug 891711 ***
    https://bugs.launchpad.net/bugs/891711

I'm marking this as a duplicate of bug 891711 which has some detailed
information regarding the issue.  We are currently looking into ways to
recover your system from this scenario so keep an eye  on bug 891711 for
those steps.


** This bug has been marked a duplicate of bug 891711
   "Upgrade" from 11.10 to 11.04 results in a unusable system

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https://bugs.launchpad.net/bugs/875890

Title:
  OSError: [Errno 17] File exists: '/target/var/lock'

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  I was running Natty.  I chose the upgrade to Oneiric.  I left it unattended and then when I came back later it had a blank screen and keyboard unresponsive.  Tried switching off and on again- Grub came up, chose the kernel 3.0 or option at the top- it gave me a blank screen.
  Chose earlier kernel which I thought might be corresponding to natty- that didn't work either
  So booted from CD with Natty and tried to install Natty all over again.  Got this message that installer crashed and asked me to attach these 2 files /var/log/syslog and /var/log/partman

  I am able to attach only 1 of the files.

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