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I am using Sony vaio E series. I installed Ubuntu in one drive. But when I restarted the system it directly goes into windows without showing any options for ubuntu 12.10.I am new to Ubuntu. Please help me.

Thanks

s3lph
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user199639
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  • Did you install in UEFI boot mode or BIOS boot mode? And even if UEFI mode you need to go into UEFI and choose the ubuntu entry. – oldfred Oct 07 '13 at 20:08

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This is because Ubuntu doesn't support Secure Boot. (it is not signed) All Computers that came along with Windows 8 have Secure Boot enabled.

Check your BIOS Setup and search for Secure Boot. Set it to [Disabled]. If you can't find it, search for a BIOS/EFI update on the internet.

As soon as you've disabled Secure Boot, you should be able to boot Ubuntu.

s3lph
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  • Ubuntu does support secure boot. If you boot installer in secure boot mode with UEFI it will install in secure boot mode. But generally better not to use secure boot. – oldfred Oct 07 '13 at 20:07
  • Really? Thanks, now I know too. (My PC doesn't have EFI at all...) – s3lph Oct 08 '13 at 06:52