Arch Linux

harsha

Member

Registered: 2012-08-04

Posts: 14

grub error: unknown filesystem, grub rescue

Hi, I installed Arch on my SSD and Windows 7 on my HDD, but when I press F11 and go to the boot menu to pick my HDD to boot from, I get:
-grub error: unknown filesystem
-grub rescue
I use syslinux as my boot loader for Arch. My syslinux.cfg is as follows:

LABEL arch
    MENU LABEL Arch Linux
    LINUX ../vmlinuz-linux
    APPEND root=/dev/sda1 ro
    INITRD ../initramfs-linux.img

LABEL archfallback
    MENU LABEL Arch Linux Fallback
    LINUX ../vmlinuz-linux
    APPEND root=/dev/sda1 ro
    INITRD ../initramfs-linux-fallback.img

#LABEL windows
#        MENU LABEL Windows
#        COM32 chain.c32
#        APPEND hd0 1

Can I edit my windows part so I can boot into windows from syslinux?
Or do I need to re-install windows somehow?

I installed Win7 first on my HDD and Arch on my SSD afterwards.

EDIT: I tried with APPEND hd1 0 and that gave me the same grub error; with APPEND hd1 1 there is a message saying Bootmanager is missing; APPEND hd1 2 tells me that there is no partition there to boot from

My fdisk -l shows:

Disk /dev/sda: 120.0 GB, 120034123776 bytes
224 heads, 19 sectors/track, 55084 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x188f63ac

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          19   234441647   117220814+  83  Linux

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe0c5913d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   976769023   488383488    7  HPFS/NTFS/exFAT

Last edited by harsha (2012-08-12 05:53:09)

Ljie1991

Member

From: ChungKing,China

Registered: 2012-08-12

Posts: 11

Re: grub error: unknown filesystem, grub rescue

I think you destroyed your linux boot partition on windows by mistake.....
try a grub fix tool

---

Long, Long had been my road and far, far was the journey

Ljie1991

Member

From: ChungKing,China

Registered: 2012-08-12

Posts: 11

Re: grub error: unknown filesystem, grub rescue

Like this:
grub rescue>ls (hd0,0)/grub

---

Long, Long had been my road and far, far was the journey

harsha

Member

Registered: 2012-08-04

Posts: 14

Re: grub error: unknown filesystem, grub rescue

It seems you're probably right. Oh well, I'll just wipe my HDD and I may install Win7 on it again later or something.