[Bug 1313396] Re: Wubi fails to boot after 14.04 install on HP Mini 110-3700

[Al Johnson]

I ran into this when upgrading from 12.04 to 14.04 64 bit. Neither the
release notes nor the upgrade instructions mention Wubi.

>From the "Serious errors were found" prompt I went to manually check the
filesystem, /host/ubuntu/disks/root.disk which turned out to be clean.
Following some forum suggestions I edited the boot command line in grub
to use 'rw' instead of 'ro' which allows boot to complete. Editing
/etc/grub.d/10_lupin and running update-grub makes the change permanent
so I can keep on booting. I don't know enough about the Wubi boot
process to know if this is fixing the root cause or just a nasty
workaround that could have unintended consequences.

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https://bugs.launchpad.net/bugs/1313396

Title:
  Wubi fails to boot after 14.04 install on HP Mini 110-3700

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  On a fresh Wubi install on an HP Mini 110-3700 with Atom N455 1.66GHz,
  2.00 GB RAM, 32-bit Windows 7 Starter, on reboot I get the message:

  "Serious errors were found while checking the disk drive for /."

  If I press S to skip mounting I get a logon prompt and can use the
  installed user name / pw to browse the file system.

  I've attached the logs from /var/log/installer. I'll leave the system
  in this state for awhile if you need more info.

  NOTES:
  * I ran Wubi after copying to the Win7 desktop from a *32-bit* Ubuntu 14.04
  * No problems noted during install, except seemed strange that Wubi was downloading an x64 torrent
  * I can boot on this machine from a USB Startup disk of both ubuntu-14.04-desktop-amd64.iso and ubuntu-14.04-desktop-i386.iso
  * I got exactly the same symptoms on reboot after upgrading 13.10 (original Wubi install upgraded several times) to 14.04 (from the ubuntu-14.04-desktop-i386.iso image). I saved the root.disk from the upgrade so could mount it and provide log files from that if it would be helpful.

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