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I have Jolicloud OS and Windows 7 dual boot and I deleted the Jolicloud partition. Next time I turned the computer on it said:
error unknown filesystem grub rescue
So I reinstalled Jolicloud and turned it off and on, but it still comes up with the same error.
Raul P. Simmons-Perez
Posted 2011-09-21T15:07:49.333
Reputation: 1
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Sounds like you deleted your grub config.
you need to install grub again. Depending on which grub you have installed,
get yourself an ubuntu or similar boot disk and then
use the following command to identify your disk descriptor
sudo fdisk -l
then:
sudo apt-get install grub
grub-install /dev/<disk name>
Example:
user@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 300.1 GB, 300069052416 bytes
255 heads, 63 sectors/track, 36481 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: 0x045a0459
Device Boot Start End Blocks Id System
/dev/sda1 * 1 31871 256003776 7 HPFS/NTFS
/dev/sda2 31872 36480 37021730+ 5 Extended
/dev/sda5 36290 36480 1534176 82 Linux swap / Solaris
/dev/sda6 31872 36289 35487522 83 Linux
Partition table entries are not in disk order
user@ubuntu:~$ sudo grub-install /dev/sda
madmaze
Posted 2011-09-21T15:07:49.333
Reputation: 3 447
You deleted the Jolicloud partition, so you were trying to get rid of it? In that case, you'll need a windows 7 disc to replace grub with the windows 7 MBR. I've never had to do this with win7, but it's easy in XP. – Rob – 2011-09-21T15:25:10.030