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First of all I'm Italian, so I apologize for my bad English.

Second, I have a big problem. I have a new Sony Vaio Pro 13 (so, it's an ultra-book WITHOUT the CD drive), which had Windows 8 pre installed. I needed to install Ubuntu in dual boot for university purposes. So, I shrunk the Windows partition and created a new partition, and from a boot-able USB stick I created a swap partition and an ext4 partition, and installed Ubuntu. Due to several failures, I used the Boot-repair tool, which installed the grub 2 boot-loader, from which I could start Ubuntu and Windows.

Anyway Ubuntu didn't start, it showed me an error, but this is not the problem. The problem is that, due to this error, I decided to try again (because maybe I did something wrong), so I logged into windows and deleted the two Linux partitions, creating an unallocated space, and rebooted with the USB stick. But I got stuck in the "grub rescue".

I looked in the internet, but I found nothing, because

  • the booting order is FIRST the SSD drive and second the USB stick (whenI installed Ubuntu before, I loaded the USB stick from a Sony UEFI-like menu, which had 4 options, and one of them was "boot fom USB");
  • I don't have a CD/DVD drive, because the laptop is an ultrabook;
  • I don't have Linux installed on the drive any more (because as I said above, I deleted the partitions).

What can I do? In some days I have an university exam and I need to get to my documents as soon as I can..

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Please don't put the answer in a question body and instead post answers as answers in the "Your Answer" section. –  gertvdijk Oct 23 '13 at 13:29
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You are encouraged to answer your own questions. Not only does it provide an opportunity for you to earn some reputation It makes it easier for others with a similar problem to find. –  Warren Hill Oct 23 '13 at 14:40

2 Answers 2

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The questioner has reported they have fixed the problem

(removed this from question)

I solved my problem!

For those who has a Sony Vaio Pro 13: there's an "Assist" button on the top of the keyboard. Press it while the laptop is off, and it will turn on loading a completely dedicated loader and partition. From there, you can access bios settings, load from usb, and do other stuffs that will help you getting out of your problem. Well done Sony, well done.

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First boot from the usb by pressing F11 key repeatedly. booting from external device

Then either install ubuntu on the partition again and choose /dev/sda for installing boot loader

or just install grub or use boot-repair

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I could solve in a similar way - I wrote it on the main post. Thank you so much anyway! –  Alessandro Oct 23 '13 at 13:26

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