Mine

++ test -e /dev/sdb
++ :
++ case "$host_os" in
++ case $1 in
+++ echo /dev/sdb
+++ sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' -e 's%\(d[0-9]*\)p[0-9]*$%\1%' -e 's%\(fd[0-9]*\)$%\1%' -e 's%/part[0-9]*$%/disc%' -e 's%\(c[0-7]d[0-9]*\).*$%\1%' -e 's%\(e[0-9]\.[0-9]*\).*$%\1%'
++ tmp_disk=/dev/sdb
+++ echo /dev/sdb
+++ sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' -e 's%.*d[0-9]*p%%' -e 's%.*/fd[0-9]*$%%' -e 's%.*/floppy/[0-9]*$%%' -e 's%.*/\(disc\|part\([0-9]*\)\)$%\2%' -e 's%.*c[0-7]d[0-9]*p*%%' -e 's%.*e[0-9]\.[0-9]*p%%' -e 's%.*e[0-9]\.[0-9]*$%%'
++ tmp_part=
+++ grep -v '^#' /boot/grub/device.map
+++ grep '/dev/sdb *$'
+++ sed 's%.*\(([hf]d[0-9][a-z0-9,]*)\).*%\1%'
++ tmp_drive='(hd1)'
++ test 'x(hd1)' = x
++ test x '!=' x
++ echo '(hd1)'
+++ df /
+++ sed -n 's%.*\(/dev/[^ 	]*\).*%\1%p'
++ tmp_fname=/dev/sda2
++ test -z /dev/sda2
+++ resolve_symlink /dev/sda2
+++ tmp_fname=/dev/sda2
+++ test -L /dev/sda2
+++ echo /dev/sda2
++ tmp_fname=/dev/sda2
++ echo /dev/sda2
+++ df /boot/
+++ sed -n 's%.*\(/dev/[^ 	]*\).*%\1%p'
++ tmp_fname=/dev/sda2
++ test -z /dev/sda2
+++ resolve_symlink /dev/sda2
+++ tmp_fname=/dev/sda2
+++ test -L /dev/sda2
+++ echo /dev/sda2
++ tmp_fname=/dev/sda2
++ echo /dev/sda2
++ test -e /dev/sda2
++ :
++ case "$host_os" in
++ case $1 in
+++ echo /dev/sda2
+++ sed -e 's%\([sh]d[a-z]\)[0-9]*$%\1%' -e 's%\(d[0-9]*\)p[0-9]*$%\1%' -e 's%\(fd[0-9]*\)$%\1%' -e 's%/part[0-9]*$%/disc%' -e 's%\(c[0-7]d[0-9]*\).*$%\1%' -e 's%\(e[0-9]\.[0-9]*\).*$%\1%'
++ tmp_disk=/dev/sda
+++ echo /dev/sda2
+++ sed -e 's%.*/[sh]d[a-z]\([0-9]*\)$%\1%' -e 's%.*d[0-9]*p%%' -e 's%.*/fd[0-9]*$%%' -e 's%.*/floppy/[0-9]*$%%' -e 's%.*/\(disc\|part\([0-9]*\)\)$%\2%' -e 's%.*c[0-7]d[0-9]*p*%%' -e 's%.*e[0-9]\.[0-9]*p%%' -e 's%.*e[0-9]\.[0-9]*$%%'
++ tmp_part=2
+++ grep -v '^#' /boot/grub/device.map
+++ grep '/dev/sda *$'
+++ sed 's%.*\(([hf]d[0-9][a-z0-9,]*)\).*%\1%'
++ tmp_drive='(hd0)'
++ test 'x(hd0)' = x
++ test x2 '!=' x
++ case "$host_os" in
++ echo '(hd0)'
+++ expr 2 - 1
++ sed 's%)$%,1)%'
+++ df /boot/grub/
+++ sed -n 's%.*\(/dev/[^ 	]*\).*%\1%p'
++ tmp_fname=/dev/sda2
++ test -z /dev/sda2
+++ resolve_symlink /dev/sda2
+++ tmp_fname=/dev/sda2
+++ test -L /dev/sda2
+++ echo /dev/sda2
++ tmp_fname=/dev/sda2
++ echo /dev/sda2
Searching for GRUB installation directory ... found: /boot/grub
The file /boot/grub/stage1 not read correctly.