Grub not showing Windows 8

[Meghana Agrawal]

After installing Ubuntu 13.04 alongside Windows 8, I am no longer able to see Windows8 on Grub.
I tried switching to UEFI mode with secure boot on, but that shows a missing OS.
Is Windows 8 not present on my laptop?
Till last night, I was at least able to view the folders of Windows in Ubuntu. With the help of a friend of lab, I re-installed Ubuntu to ensure the display of Windows on the grub.
Windows8 is still not being displayed on the grub.

Moreover, since then I am not even able to view any other folder apart from the C drive.
And I have an additional problem now that Ubuntu is not recognising any pendrive. I tried all the ports and different pendrives.
This issue wasn't there before the re-installation.
I tried Boot-repair.

Here are the details:
http://paste.ubuntu.com/6066265

Please help.
Thanks in advance.

[Aarti K. Dwivedi]

Hi,

From the file it seems that your WIndows is not being detected by os-prober.

http://askubuntu.com/a/296871 might help.

Do tell if this works or we'll look for something else.

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Aarti K. Dwivedi

[Meghana Agrawal]

No..this is not working too and morever..I tried several other methods to detect windows but unfortunately, it was not there so now I want to ask that why it is not detecting my USB?

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[Aarti K. Dwivedi]

Most probably, your USB is not being mounted. Follow the steps given here:

http://linuxcommando.blogspot.in/2007/12/how-to-mount-usb-flash-drive-from.html