[Bug 1006372] Re: Live-build creates unbootable usb-hdd images.

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: live-build (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1006372

Title:
  Live-build creates unbootable usb-hdd images.

Status in “live-build” package in Ubuntu:
  Confirmed

Bug description:
  The usb-hdd images created with live-build do NOT have the first
  partition flagged as bootable. This way, when the image is copied to a
  pendrive, it will not boot in some BIOSes. When lb_usb_binary script
  sets the boot flag, the image is mounted as a loop device *with* an
  offset (thus accessing the contents of the first partition). This is
  wrong. It should set the boot flag earlier, when the image is mounted
  as a loop device *without* an offset (thus accessing the mbr). The fix
  is trivially simple, and a patch is attached.

  What is expected to happen:
  The lb_binary_usb script should flag the first partition as bootable in the image mbr.

  What happened instead:
  The lb_binary_usb script sets the boot flag in the wrong moment, and as such it does not work.

  Using Ubuntu Precise 12.04 amd64.
  Live-build 3.0~a24-1ubuntu32.

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