I really don't think my computer can use EFI, I've checked the BIOS settings and there does not seem to be any such compatibility mode or anything of the sort...
It is a Toshiba Satellite M645-S4050, and while I cannot be completely certain of the year I got it in, I am quite certain that it was either 2009 or 2010, so it should not have EFI built in, to my knowledge.
I have tried removing the boot flag on sda3, but it did not change anything when I tried to boot the computer up. Disk Utility says that it is the correct type - "Linux Basic Data Partition."
I will edit the updated boot info script results into this post in a moment.
It sounds like I need to install Ubuntu on a partition that does not have the boot flag in the first place. In truth, as I am a novice to all of this, that's about all I know to make of the situation.
On the subject of Windows, thank you very much for all of the helpful information. I will try to figure something out, but for now I would like to figure out what to do with this problem of GRUB not loading...
EDIT: Updated results:
Boot Info Script 0.61 [1 April 2012]
============================= Boot Info Summary: ===============================
=> Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 34
of the same hard drive for core.img. core.img is at this location and
looks for (,gpt3)/boot/grub on this drive.
=> Grub2 (v1.99) is installed in the MBR of /dev/sdb.
sda1: __________________________________________________ ________________________
File system: ntfs
Boot sector type: Windows Vista/7: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files:
sda2: __________________________________________________ ________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
sda3: __________________________________________________ ________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 12.04 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
sda4: __________________________________________________ ________________________
File system: BIOS Boot partition
Boot sector type: Grub2's core.img
Boot sector info:
sda5: __________________________________________________ ________________________
File system: swap
Boot sector type: -
Boot sector info:
sdb1: __________________________________________________ ________________________
File system: iso9660
Boot sector type: Unknown
Boot sector info:
Mounting failed: mount: /dev/sdb1 already mounted or sdb1 busy
============================ 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 Sector End Sector # of Sectors Id System
/dev/sda1 1 976,773,167 976,773,167 ee GPT
GUID Partition Table detected.
Partition Start Sector End Sector # of Sectors System
/dev/sda1 2,048 419,432,447 419,430,400 Data partition (Windows/Linux)
/dev/sda2 758,028,288 925,964,287 167,936,000 Data partition (Windows/Linux)
/dev/sda3 925,964,288 967,743,487 41,779,200 Data partition (Windows/Linux)
/dev/sda4 34 1,987 1,954 BIOS Boot partition
/dev/sda5 967,743,838 976,773,118 9,029,281 Swap partition (Linux)
Drive: sdb __________________________________________________ ___________________
Disk /dev/sdb: 8004 MB, 8004304896 bytes
19 heads, 24 sectors/track, 34283 cylinders, total 15633408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdb1 * 64 1,430,103 1,430,040 17 Hidden NTFS / HPFS
"blkid" output: __________________________________________________ ______________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda1 4C67B85008F152CF ntfs
/dev/sda2 382ee80a-8fb2-4c0e-a859-31c2f84a4d77 ext4
/dev/sda3 3fe986e7-e9c6-4352-bc99-5ca478ea071d ext4
/dev/sda5 e2b2f564-68d0-4859-b650-87d52c4760d7 swap
/dev/sdb1 iso9660 Ubuntu 12.04 LTS amd64
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sdb /cdrom iso9660 (ro,noatime)
=========================== sda3/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 "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
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
if background_color 44,0,30; then
clear
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="$1"
if [ "$1" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.2.0-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
gfxmode $linux_gfx_mode
insmod gzio
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
linux /boot/vmlinuz-3.2.0-23-generic root=UUID=3fe986e7-e9c6-4352-bc99-5ca478ea071d ro quiet splash $vt_handoff
initrd /boot/initrd.img-3.2.0-23-generic
}
menuentry 'Ubuntu, with Linux 3.2.0-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
echo 'Loading Linux 3.2.0-23-generic ...'
linux /boot/vmlinuz-3.2.0-23-generic root=UUID=3fe986e7-e9c6-4352-bc99-5ca478ea071d ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.2.0-23-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_gpt
insmod ext2
set root='(hd0,gpt3)'
search --no-floppy --fs-uuid --set=root 3fe986e7-e9c6-4352-bc99-5ca478ea071d
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
if [ "x${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible 3 ; then
set timeout=0
fi
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 ###
--------------------------------------------------------------------------------
=============================== sda3/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' 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
# / was on /dev/sda3 during installation
UUID=3fe986e7-e9c6-4352-bc99-5ca478ea071d / ext4 errors=remount-ro 0 1
# /home was on /dev/sda2 during installation
UUID=382ee80a-8fb2-4c0e-a859-31c2f84a4d77 /home ext4 defaults 0 2
# swap was on /dev/sda5 during installation
UUID=e2b2f564-68d0-4859-b650-87d52c4760d7 none swap sw 0 0
--------------------------------------------------------------------------------
=================== sda3: Location of files loaded by Grub: ====================
GiB - GB File Fragment(s)
= boot/grub/core.img 1
= boot/grub/grub.cfg 1
= boot/initrd.img-3.2.0-23-generic 2
= boot/vmlinuz-3.2.0-23-generic 1
= initrd.img 2
= vmlinuz 1
======================== Unknown MBRs/Boot Sectors/etc: ========================
Unknown BootLoader on sdb1
00000000 01 43 44 30 30 31 01 00 20 20 20 20 20 20 20 20 |.CD001.. |
00000010 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
00000020 20 20 20 20 20 20 20 20 55 62 75 6e 74 75 20 31 | Ubuntu 1|
00000030 32 2e 30 34 20 4c 54 53 20 61 6d 64 36 34 20 20 |2.04 LTS amd64 |
00000040 20 20 20 20 20 20 20 20 00 00 00 00 00 00 00 00 | ........|
00000050 96 74 05 00 00 05 74 96 00 00 00 00 00 00 00 00 |.t....t.........|
00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000070 00 00 00 00 00 00 00 00 01 00 00 01 01 00 00 01 |................|
00000080 00 08 08 00 8a 03 00 00 00 00 03 8a 75 00 00 00 |............u...|
00000090 00 00 00 00 00 00 00 76 00 00 00 00 22 00 23 00 |.......v....".#.|
000000a0 00 00 00 00 00 23 00 08 00 00 00 00 08 00 70 04 |.....#........p.|
000000b0 19 10 0d 2e 00 02 00 00 01 00 00 01 01 00 20 20 |.............. |
000000c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
000001b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 58 4f | XO|
000001c0 52 52 49 53 4f 2d 31 2e 30 2e 38 20 32 30 31 31 |RRISO-1.0.8 2011|
000001d0 2e 30 34 2e 31 34 2e 30 37 33 30 30 31 2c 20 4c |.04.14.073001, L|
000001e0 49 42 49 53 4f 42 55 52 4e 2d 31 2e 30 2e 38 2c |IBISOBURN-1.0.8,|
000001f0 20 4c 49 42 49 53 4f 46 53 2d 31 2e 30 2e 38 2c | LIBISOFS-1.0.8,|
00000200
=============================== StdErr Messages: ===============================
xz: (stdin): Compressed data is corrupt
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in