grub-probe: info: the size of hd0 is 4294963200
grub-probe: info: opening the device `/dev/sda'
grub-probe: info: the size of hd0 is 4294963200
grub-probe: info: the size of hd0 is 4294963200
grub-probe: info: opening the device `/dev/sda'
grub-probe: info: the size of hd0 is 4294963200
grub-probe: info: changing current directory to /dev
grub-probe: info: /dev/sda1 starts from 34
grub-probe: info: opening the device hd0
grub-probe: info: the size of hd0 is 4294963200
grub-probe: error: cannot find a GRUB drive for /dev/sda1.