[Bug 277903] Re: Missing Operating System [message at boot]

[DjznBR]

I recently purchased a GA-990XA-UD3 and experienced this problem.
This is an UEFI board, with support for Legacy boot, etc.
I had no problems creating a TAILS persistent USB flash disk, within TAILS DVD. It booted normally from USB.

But then, when I used a Sandisk Cruzer Blade (another flash drive) to
create a standard Ubuntu 15.04 Live USB, using the tool called
"Universal Boot Installer", following the right steps.  Everything in
place, FAT32, etc, and to my surprise....

"Missing operating system".


I found out that the flash drive had two configurations, when investigating through gparted, and fdisk.

1) The flash drive was as GPT partition.
2) It had the msftdata flag.

I don't know WHICH one of those could have caused the problem. 
I think this happened to this flash pendrive when I was playing around with "Windows 8 Disk Management" tools.

What I did was to completely wipe the flash drive, with gparted, recreating the partition table as msdos, and formatting as FAT32.
Using "Universal USB Installer" recreated the system, and then I found out it also flagged the drive as "boot, lba".

I hope this helps, if you're stuck.

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https://bugs.launchpad.net/bugs/277903

Title:
  Missing Operating System [message at boot]

Status in Ubuntu CD Images:
  New
Status in syslinux package in Ubuntu:
  In Progress

Bug description:
  I'm reviving this report since the issue is still present in 14.04 and
  15.10 syslinux, which is used in the various flavour hybrid ISOs, via
  mbr/isohdpfx.{S,bin}

  The same system I originally reported in comment #30 is still
  affected.

  Original upstream discussion (March 2009):
  http://www.syslinux.org/archives/2009-March/012254.html

  Peter reworked the patches in 2009 and created additional MBRs with
  the suffix "_c" (press Ctrl to force disk 0x80) and "_f"
  (unconditionally force disk 0x80).

  See: http://www.syslinux.org/wiki/index.php/Mbr

  These images are in the Ubuntu 14.04 package but were removed (in
  Debian) with:

  syslinux (3:6.03~pre19+dfsg-3) unstable; urgency=low

    * Also skipping isohd*x_{c,f}.bin in syslinux-common.
    ...

   -- Daniel Baumann <daniel.baumann at progress-linux.org>  Sun, 24 Aug
  2014 00:19:38 +0200

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