"Error: Unknown filesystem grub rescue"

dano2 · 06-07-2012, 10:49 AM

Hi. After replacing my entire Windows 7 OS with Ubuntu 10.04 on my Asus G73S, I've decided I want to dual-boot between the two. So I want to start from scratch and install Windows first. But after running the Windows Restore/Recovery Image (6 DVDs http://dl.dropbox.com/u/80304796/b1.jpg ), I get "Error: Unknown filesystem grub rescue" when I try to boot ( http://dl.dropbox.com/u/80304796/b3.jpg ). Any suggestions?

For what it's worth, here are my boot choices ( http://dl.dropbox.com/u/80304796/b2.jpg ) and here is what "sudo fdisk -l" returns...

PHP Code:



Disk /dev/sda: 500.1 GB, 500107862016 bytes 
255 heads, 63 sectors/track, 60801 cylinders 
Units = cylinders of 16065 * 512 = 8225280 bytes 
Sector size (logical/physical): 512 bytes / 512 bytes 
I/O size (minimum/optimal): 512 bytes / 512 bytes 
Disk identifier: 0x000c1d5a 
 
   Device Boot      Start         End      Blocks   Id  System 
/dev/sda1   *           1        3264    26214400    c  W95 FAT32 (LBA) 
/dev/sda2            3264       27585   195354624    7  HPFS/NTFS 
/dev/sda3           59489       60802    10543105    5  Extended 
ubuntu@ubuntu:~$

yancek · 06-08-2012, 08:42 AM

Your Recovery/Restore DVD restored to factory settings which overwrote your Ubuntu installation. You can see in the fdisk output you only have windows filesystems. Apparently, the Restore option doesn't rewrite the master boot record since you get a grub prompt on boot. You will need to restore the windows bootloader to the master boot record and probably will need a full windows 7 installation DVD. If you are planning to re-install Ubuntu, make sure you create partitions on which to install in the Extended partition during the installation and install the Ubuntu bootloader to the master boot record. It should detect the windows installation and create an entry for it in the boot menu.

EDDY1 · 06-08-2012, 09:38 AM

You can either download the 7rd 32bit or 64bit iso & restore wins bootloader or reinstall ubuntu
http://www.forum.probz.net/index.php...vironment-iso/
http://www.forum.probz.net/index.php...vironment-iso/