i have the same problem. these are my results.
please advise?
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Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Windows is installed in the MBR of /dev/sda
sda1: __________________________________________________ _______________________
File system: vfat
Boot sector type: BSD4.4: Fat32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:
sda2: __________________________________________________ _______________________
File system: hfsplus
Boot sector type: -
Boot sector info:
Operating System:
Boot files/dirs:
sda3: __________________________________________________ _______________________
File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files/dirs: /bootmgr /Boot/BCD /Windows/System32/winload.exe
sda4: __________________________________________________ _______________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.10
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
sda5: __________________________________________________ _______________________
File system: swap
Boot sector type: -
Boot sector info:
=========================== Drive/Partition Info: =============================
Drive: sda ___________________ __________________________________________________ ___
Disk /dev/sda: 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
Partition Boot Start End Size Id System
/dev/sda1 1 409,639 409,639 ee GPT
/dev/sda2 409,640 488,460,311 488,050,672 af HFS
/dev/sda3 * 488,722,456 732,747,791 244,025,336 7 HPFS/NTFS
/dev/sda4 733,009,936 956,979,735 223,969,800 83 Linux
GUID Partition Table detected.
Partition Start End Size System
/dev/sda1 40 409,639 409,600 System/Boot Partition
/dev/sda2 409,640 488,460,311 488,050,672 HFS+
/dev/sda3 488,722,456 732,747,791 244,025,336 Linux or Data
/dev/sda4 733,009,936 956,979,735 223,969,800 Linux or Data
/dev/sda5 957,241,880 976,510,983 19,269,104 Linux Swap
blkid -c /dev/null: __________________________________________________ __________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda1 2860-11F4 vfat EFI
/dev/sda2 b54fdeff-fb54-39c1-b86c-a76843ee7b65 hfsplus Macintosh HD
/dev/sda3 6058549258546934 ntfs
/dev/sda4 3e2e7df7-b132-4a49-90d6-0977b9cee0a0 ext4
/dev/sda5 c7f1ed5e-7b3b-4f96-8a2e-f561ac42a665 swap
/dev/sda: PTTYPE="gpt"
error: /dev/sdb: No medium found
============================ "mount | grep ^/dev output: ===========================
Device Mount_Point Type Options
aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)
=========================== sda4/boot/grub/grub.cfg: ===========================
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
}
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=3e2e7df7-b132-4a49-90d6-0977b9cee0a0 ro quiet splash
initrd /boot/initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
echo 'Loading Linux 2.6.35-22-generic ...'
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=3e2e7df7-b132-4a49-90d6-0977b9cee0a0 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.35-22-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_gpt
insmod ext2
set root='(hd0,gpt4)'
search --no-floppy --fs-uuid --set 3e2e7df7-b132-4a49-90d6-0977b9cee0a0
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Mac OS X (32-bit) (on /dev/sda2)" {
insmod part_gpt
insmod hfsplus
set root='(hd0,gpt2)'
search --no-floppy --fs-uuid --set 159145aba96ac496
load_video
set do_resume=0
if [ /var/vm/sleepimage -nt10 / ]; then
if xnu_resume /var/vm/sleepimage; then
set do_resume=1
fi
fi
if [ $do_resume = 0 ]; then
xnu_uuid 159145aba96ac496 uuid
if [ -f /Extra/DSDT.aml ]; then
acpi -e /Extra/DSDT.aml
fi
xnu_kernel /mach_kernel boot-uuid=${uuid} rd=*uuid
if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions ]; then
xnu_mkext /System/Library/Extensions.mkext
else
xnu_kextdir /System/Library/Extensions
fi
if [ -f /Extra/Extensions.mkext ]; then
xnu_mkext /Extra/Extensions.mkext
fi
if [ -d /Extra/Extensions ]; then
xnu_kextdir /Extra/Extensions
fi
if [ -f /Extra/devprop.bin ]; then
xnu_devprop_load /Extra/devprop.bin
fi
if [ -f /Extra/splash.jpg ]; then
insmod jpeg
xnu_splash /Extra/splash.jpg
fi
if [ -f /Extra/splash.png ]; then
insmod png
xnu_splash /Extra/splash.png
fi
if [ -f /Extra/splash.tga ]; then
insmod tga
xnu_splash /Extra/splash.tga
fi
fi
}
menuentry "Mac OS X (64-bit) (on /dev/sda2)" {
insmod part_gpt
insmod hfsplus
set root='(hd0,gpt2)'
search --no-floppy --fs-uuid --set 159145aba96ac496
load_video
set do_resume=0
if [ /var/vm/sleepimage -nt10 / ]; then
if xnu_resume /var/vm/sleepimage; then
set do_resume=1
fi
fi
if [ $do_resume = 0 ]; then
xnu_uuid 159145aba96ac496 uuid
if [ -f /Extra/DSDT.aml ]; then
acpi -e /Extra/DSDT.aml
fi
xnu_kernel64 /mach_kernel boot-uuid=${uuid} rd=*uuid
if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions ]; then
xnu_mkext /System/Library/Extensions.mkext
else
xnu_kextdir /System/Library/Extensions
fi
if [ -f /Extra/Extensions.mkext ]; then
xnu_mkext /Extra/Extensions.mkext
fi
if [ -d /Extra/Extensions ]; then
xnu_kextdir /Extra/Extensions
fi
if [ -f /Extra/devprop.bin ]; then
xnu_devprop_load /Extra/devprop.bin
fi
if [ -f /Extra/splash.jpg ]; then
insmod jpeg
xnu_splash /Extra/splash.jpg
fi
if [ -f /Extra/splash.png ]; then
insmod png
xnu_splash /Extra/splash.png
fi
if [ -f /Extra/splash.tga ]; then
insmod tga
xnu_splash /Extra/splash.tga
fi
fi
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
=============================== sda4/etc/fstab: ===============================
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
/dev/sda4 / ext4 errors=remount-ro 0 1
/dev/sda5 none swap sw 0 0
=================== sda4: Location of files loaded by Grub: ===================
384.0GB: boot/grub/core.img
422.7GB: boot/grub/grub.cfg
375.8GB: boot/initrd.img-2.6.35-22-generic
375.6GB: boot/vmlinuz-2.6.35-22-generic
375.8GB: initrd.img
375.6GB: vmlinuz
=======Devices which don't seem to have a corresponding hard drive==============
sdb
#