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  • I have dual boot installation of windows 8 and ubuntu.
  • "Sometimes" when I start my laptop, it gets stuck on very first screen (displaying Samsung, Intel, F2 to setup etc). But after a couple of restart it starts working. I have no idea what the problem could be.
  • Generally it shows the ubuntu boot screen asking if I want to boot ubuntu or windows 8 as it should.
  • And sometimes I get a Grub error after the "Samsung" screen, saying no such partition. Can anybody help?
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Perhaps a flaky hard disk? I think you probably have some kind of hardware problem. If you have any important data, your first step should be to backup.

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