Debian GRUB rescue - "invalid arch independent ELF magic" -


i have dual-booted windows pc debian wheezy. installation went fine no errors, when boot debian greeted grub rescue:

welcome grub!  error: unknown filesystem. entering rescue mode...

after examining further using set command notice booting wrong partition:

grub rescue> set prefix=(hd0,gpt4)/boot/grub root=hd0,gpt4

here pointing (hd0,gpt4) when location debian installed (hd0,gpt5). so, did quick fix using set change variables should be:

grub rescue> set prefix=(hd0,gpt5)/boot/grub grub rescue> set root=gd0,gpt5

after doing this, did remembered should boot os , ran:

grub rescue> insmod normal

this things start go wrong error:

error: invalid arch independent elf magic.

i did research on problem , seemed common solution reinstall grub live cd. so, booted live cd of debian , ran following:

sudo mount /dev/sda5 /mnt sudo grub-install --root-directory=/mnt /dev/sda

where given error:

the file /mnt/boot/grub/stage1 not read correctly.

although can assure file exist , editable edit 

sudo nano /mnt/boot/grub/stage1

so problem?

whilst installing grub-efi fixed things on system (because supports both traditional bios boot process, efi booting), if wanted fix original grub install, answer possibly:

apt-get install --reinstall grub-pc-bin grub-pc

followed by:

grub-install /dev/sdx

where /dev/sdx should replaced boot drive (or drives).

... replace looks corrupted versions of grub binaries (which "invalid arch independent elf magic" means) on boot drive.


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