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-   -   GRUB error: unknown filesystem, grub rescue (https://www.linuxquestions.org/questions/linux-newbie-8/grub-error-unknown-filesystem-grub-rescue-781125/)

Flyinace22 06-13-2011 12:52 PM

Grub error
 
I booted up my computer and got the message
Quote:

GRUB loading.
error: unknown filesystem
grub rescue>
I share my computer with my brother and he deleted the main partition linux was on trying to get rid of it and get extra space for the windows partition. Is it possible to boot to windows from the grub rescue? and if so how can I correctly uninstall the rest of linux and clean up my bro's mess? If not what do I need to do to be able to boot to windows?

yancek 06-13-2011 02:37 PM

Use your windows installation CD to repair the bootloader. Grub has part of its files in the master boot record but most of them were on the partition your brother deleted making your system unbootable. You don't indicate which version of windows you are using so can't give more specific instructions.

Flyinace22 06-13-2011 06:43 PM

I have a compaq presario c500 with windows 7 installed on it.

yancek 06-13-2011 11:55 PM

If you don't have a windows 7 installation CD or a recovery CD, you can download a recovery CD from this site:

http://neosmart.net/blog/2009/window...-repair-discs/

I'd suggest you read the instructions before beginning.

snapdragon4082 07-16-2011 10:38 PM

I wanted to say thanks to Miros84 for their reply about grub rescue errors. The link provided was so easy and fast. It fixed my computer in nothing flat

lingyun 09-13-2011 01:16 AM

grub rescue>root=(hd0,x) ##set / partion
grub rescue>prefix=/boot/grub
grub rescue>insmod normal
rescue>normal

ComputerW!ZARD 05-15-2012 08:22 AM

This had happened to me when I installed Ubuntu 12.04 from my usbdrive. I found out that the GRUB had been installed on the USBDrive, so I reinstalled it into the harddisk. First find out your harddisk's name by:

Code:

sudo fdisk -l
There will be a list of something like sda1, sda2, sda3... In this case the HD's name is sda. So you will have to install GRUB in sda. To do this, do this:

Code:

sudo grub-install sda
This should work (it did for me).

psychoashish 09-25-2012 11:51 PM

hii every1,
I am new to linux. I had windows 7 installed in my laptop. Yesterday i installed ubuntu9.0 from a free cd i got. I choosed the option "install side by side with windows7 loader(something like that..)". everything went fine & i installed ubuntu. When i restarted my laptop, i couuld easily boot from both windows 7 loader & ubuntu.
But later when i booted from windows 7, i did a disk management by right clicking "my Computer" & choosing the option "Manage". Actually i deleted a drive & added that empty volume in another drive.
Now when i start my system it shows the following error:
Grub loading
Unknown file system
grub rescue>
====
I have no clue what to do now. please help me at urgent. :(
Any solution in layman's language is greatly appreciated.
Thanks in advance
P.S- I want all my files(no data loss)& both windows 7 & ubuntu installed.

EDDY1 09-26-2012 12:46 AM

9.0 is definately an outdated & unsupported version, you will be better off with a more current version.

Quote:

When i restarted my laptop, i couuld easily boot from both windows 7 loader & ubuntu.
But later when i booted from windows 7, i did a disk management by right clicking "my Computer" & choosing the option "Manage". Actually i deleted a drive & added that empty volume in another drive.
Now when i start my system it shows the following error:
Since you were able to boot windows you may be able to install an upto-date version of Ubuntu, but, I suggest that you backup your data first. You also have the option of repairing windows with a windows installation disk.

In the future open a new thread instead of reviving an old thread.
Good luck.

psychoashish 09-26-2012 12:57 AM

Thanks for the prompt reply Eddy
Actually i thought once i install it, i will do an update. And maybe u misunderstood..actally now i cant boot either from windows or from ubuntu. When i start my system i get the error mentioned "unknown file system grub rescue"
And i installed 9.10. I mistyped it as 9.0

EDDY1 09-26-2012 02:28 AM

Quote:

I am new to linux. I had windows 7 installed in my laptop. Yesterday i installed ubuntu9.0 from a free cd i got. I choosed the option "install side by side with windows7 loader(something like that..)". everything went fine & i installed ubuntu. When i restarted my laptop, i couuld easily boot from both windows 7 loader & ubuntu.
You were able to start both.
Quote:

But later when i booted from windows 7, i did a disk management by right clicking "my Computer" & choosing the option "Manage". Actually i deleted a drive & added that empty volume in another drive.
After deleting from a partition from windows you can't boot either os.

Was the Ubuntu a desktop version? If so you can boot it & select Try Ubuntu which will let you mount your partitions & the tools that are on th live-cd.
Most likely you deleted the / partition hat contained your grub.

anandha 07-29-2013 02:43 AM

Unknown Filesystem
 
Quote:

Originally Posted by magnecticfield (Post 3820593)
Hi, I have dual boot with Ubuntu 9.10 and Windows 7. Today, after using Partition Wizard on Windows to resize its partition, I got the following message when reboot:

Code:

error: unknown filesystem
grub rescue >

I dont actually know what to do, I've been reading some threads on the internet but nothing equal to my case, only people who installed Windows after Linux and lost GRUB. Do I just need a live CD to reinstall GRUB? Can somebody tell what to do? Thanks.

some one help me i got same problem Please

anandha 07-29-2013 02:47 AM

hii every1,
I am new to linux. I had windows 7 installed in my laptop. Yesterday i installed ubuntu9.0 from a free cd i got. I choosed the option "install side by side with windows7 loader(something like that..)". everything went fine & i installed ubuntu. When i restarted my laptop, i couuld easily boot from both windows 7 loader & ubuntu.
But later when i booted from windows 7, i did a disk management by right clicking "my Computer" & choosing the option "Manage". Actually i deleted a drive & added that empty volume in another drive.
Now when i start my system it shows the following error:
Grub loading
Unknown file system
grub rescue>
====
I have no clue what to do now. please help me at urgent.
Any solution in layman's language is greatly appreciated.
Thanks in advance
P.S- I want all my files(no data loss)& both windows 7 & ubuntu installed.

EDDY1 07-30-2013 03:35 AM

Ubuntu 9 is outdated install the newer version & you should be fine. You most likely deleted 1 of your linux partitions.


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