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Old 06-12-2013, 05:48 AM   #1
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Registered: Jun 2013
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error : unknown filesystem. gurb rescue> (Win8/Ubuntu 13.04)

Hey guys

this is my first post, hope I make myself clear enough for you guys to help

I got a new laptop Dell Inspiron 15R 3521 which comes with windows8 built in.

I managed to install and use Ubuntu 13.04 for my academic work, by disabling UEFI secure boot feature every time I have to login to Ubuntu.

It has been working well for a few weeks now.

Now am not able to boot in to Ubuntu. it just shows a black screen with this message on it.

Error : unknown filesystem.
grub rescue>

grub rescue> ls
is giving me a list of drives and partitions.
but ls (drive, partition)/
sn't opening any directories of Ubuntu.
Win8 s working perfectly fine.

Kindly let me know what more details you guys require to help as I am totally new to Linux environment.

Kinda urgent guys (stuck in the middle of my internship)
Thanks in advance guys.
Old 06-12-2013, 08:48 AM   #2
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Registered: Apr 2008
Distribution: PCLinux, Slackware
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Go to the site below and read the directions for using the bootinfoscript, download and run it and post the output, a results.txt file. You will need to do this from Linux, the Ubuntu CD/Flash drive you used to install should work. This will provide detailed information which should help someone to help you. Also, indicate any changes you made to Ubuntu, if any:


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