[ubuntu] Issues dual booting with Win 8 on a new laptop [Archive]

lucascacho

March 20th, 2013, 11:35 PM

Hi everyone.
After quite some time searching for a solution to my particular problem with no luck, i have decided to turn to the forums with hopes of getting some help :)

Here's what's up: I am on a new Sony Vaio T-Series Netbook running Windows 8, which has an EFI bootloader.

IN my attempt to dual boot, I created a 10gb partition for ubuntu, downloaded the 64-bit version (as suggested by the website due to the EFI boot) and proceeded to boot it from a flashdrive.
The install worked perfectly and ubuntu was up and running.
Thing is, I wasn't able to choose what OS to boot each time the computer booted up, so in my ignorance I used the boot repair software to try and solve the issue. I ended up getting a GRUB RESCUE console interface and had to rebuild my MBR and boot using the windows recovery console.
So now I have ubuntu installed on a separate partition, but have no way of booting into it.

I ran the Boot Info script, here is the output:

Boot Info Script 0.61 [1 April 2012]

============================= Boot Info Summary: ===============================

=> Windows is installed in the MBR of /dev/sda.

sda1: __________________________________________________ ________________________

File system: vfat
Boot sector type: Unknown
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/Boot/bootx64.efi /efi/ubuntu/grubx64.efi

sda2: __________________________________________________ ________________________

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: /bootmgr /Boot/BCD

sda3: __________________________________________________ ________________________

File system: vfat
Boot sector type: Unknown
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/Boot/bootx64.efi /efi/linuxmint/grubx64.efi
/efi/ubuntu/grubx64.efi /bootmgr /boot/bcd

sda4: __________________________________________________ ________________________

File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: unknown filesystem type ''

sda5: __________________________________________________ ________________________

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: /bootmgr /Windows/System32/winload.exe

sda6: __________________________________________________ ________________________

File system: ext2
Boot sector type: Unknown
Boot sector info:
Operating System:
Boot files:

sda7: __________________________________________________ ________________________

File system:
Boot sector type: Unknown
Boot sector info:
Mounting failed: mount: unknown filesystem type ''
mount: unknown filesystem type ''

sda8: __________________________________________________ ________________________

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:

sdb: __________________________________________________ _________________________

File system: vfat
Boot sector type: SYSLINUX 4.03 2010-10-22 ........>..sr>..........9...0...~.....~...f...M.f.f....f..0~....>E}.u......
Boot sector info: Syslinux looks at sector 1615808 of /dev/sdb for its
second stage. SYSLINUX is installed in the directory.
The integrity check of the ADV area failed. No errors
found in the Boot Parameter Block.
Operating System:
Boot files: /boot/grub/grub.cfg /syslinux.cfg
/efi/BOOT/grubx64.efi /ldlinux.sys

============================ Drive/Partition Info: =============================

Drive: sda __________________________________________________ ___________________

Disk /dev/sda: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 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 1 500,118,191 500,118,191 ee GPT

GUID Partition Table detected.

Partition Start Sector End Sector # of Sectors System
/dev/sda1 2,048 534,527 532,480 -
/dev/sda2 534,528 3,553,279 3,018,752 Windows Recovery Environment (Windows)
/dev/sda3 3,553,280 4,085,759 532,480 EFI System partition
/dev/sda4 4,085,760 4,347,903 262,144 Microsoft Reserved Partition (Windows)
/dev/sda5 4,347,904 399,984,639 395,636,736 Data partition (Windows/Linux)
/dev/sda6 399,984,640 420,956,159 20,971,520 Data partition (Windows/Linux)
/dev/sda7 420,958,208 437,768,191 16,809,984 -
/dev/sda8 437,768,192 500,117,503 62,349,312 Windows Recovery Environment (Windows)

"blkid" output: __________________________________________________ ______________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 C46A-065D vfat SONYSYS
/dev/sda2 F274DA3D74DA046F ntfs Windows RE tools
/dev/sda3 FEA6-8C3B vfat
/dev/sda5 DCAEAB63AEAB34C4 ntfs
/dev/sda6 1f0df31a-fd48-48ed-bc1f-71ff5a5b5056 ext2
/dev/sda8 18E2E459E2E43D1E ntfs Recovery
/dev/sdb E0A8-ACA7 vfat UBUNTU

================================ Mount points: =================================

Device Mount_Point Type Options

/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sdb /cdrom vfat (ro,noatime,fmask=0022,dmask=0022,codepage=cp437,i ocharset=iso8859-1,shortname=mixed,errors=remount-ro)

=========================== sdb/boot/grub/grub.cfg: ============================

--------------------------------------------------------------------------------

if loadfont /boot/grub/font.pf2 ; then
set gfxmode=auto
insmod efi_gop
insmod efi_uga
insmod gfxterm
terminal_output gfxterm
fi

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray

menuentry "Try Ubuntu without installing" {
set gfxpayload=keep
linux /casper/vmlinuz.efi.signed file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
initrd /casper/initrd.lz
}
menuentry "Install Ubuntu" {
set gfxpayload=keep
linux /casper/vmlinuz.efi.signed file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
initrd /casper/initrd.lz
}
menuentry "OEM install (for manufacturers)" {
set gfxpayload=keep
linux /casper/vmlinuz.efi.signed file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true --
initrd /casper/initrd.lz
}
menuentry "Check disc for defects" {
set gfxpayload=keep
linux /casper/vmlinuz.efi.signed boot=casper integrity-check quiet splash --
initrd /casper/initrd.lz
}
--------------------------------------------------------------------------------

============================== sdb/syslinux.cfg: ===============================

--------------------------------------------------------------------------------
default menu.c32
prompt 0
menu title UNetbootin
timeout 100

label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --

label ubnentry0
menu label ^Help
kernel /ubnkern
append initrd=/ubninit

label ubnentry1
menu label ^Try Ubuntu without installing
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --

label ubnentry2
menu label ^Install Ubuntu
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --

label ubnentry3
menu label ^Check disc for defects
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz boot=casper integrity-check quiet splash --

label ubnentry4
menu label Test ^memory
kernel /install/mt86plus
append initrd=/ubninit

label ubnentry5
menu label ^Boot from first hard disk
kernel /ubnkern
append initrd=/ubninit

label ubnentry6
menu label Try Ubuntu without installing
kernel /casper/vmlinuz.efi.signed
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --

label ubnentry7
menu label Install Ubuntu
kernel /casper/vmlinuz.efi.signed
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --

label ubnentry8
menu label OEM install (for manufacturers)
kernel /casper/vmlinuz.efi.signed
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true --

label ubnentry9
menu label Check disc for defects
kernel /casper/vmlinuz.efi.signed
append initrd=/casper/initrd.lz boot=casper integrity-check quiet splash --

--------------------------------------------------------------------------------

==================== sdb: Location of files loaded by Grub: ====================

GiB - GB File Fragment(s)

?? = ?? boot/grub/grub.cfg 1

================== sdb: Location of files loaded by Syslinux: ==================

GiB - GB File Fragment(s)

?? = ?? ldlinux.sys 1
?? = ?? menu.c32 1
?? = ?? syslinux.cfg 1

=============== sdb: Version of COM32(R) files used by Syslinux: ===============

menu.c32 : COM32R module (v4.xx)

======================== Unknown MBRs/Boot Sectors/etc: ========================

Unknown GPT Partiton Type
329701f46e06124e8273346c5641494f
Unknown GPT Partiton Type
dee2bfd3af3ddf11ba40e3a556d89593
Unknown BootLoader on sda1

00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 08 fe 1b |.X.MSDOS5.0.....|
00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 08 00 00 |........?.......|
00000020 00 20 08 00 01 02 00 00 00 00 00 00 02 00 00 00 |. ..............|
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040 80 00 29 5d 06 6a c4 4e 4f 20 4e 41 4d 45 20 20 |..)].j.NO NAME |
00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....|
00000060 7b 8e c1 8e d9 bd 00 7c 88 56 40 88 4e 02 8a 56 |{......|.V@.N..V|
00000070 40 b4 41 bb aa 55 cd 13 72 10 81 fb 55 aa 75 0a |@.A..U..r...U.u.|
00000080 f6 c1 01 74 05 fe 46 02 eb 2d 8a 56 40 b4 08 cd |...t..F..-.V@...|
00000090 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f b6 |.s......f...@f..|
000000a0 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 c9 |...?.......Af...|
000000b0 66 f7 e1 66 89 46 f8 83 7e 16 00 75 39 83 7e 2a |f..f.F..~..u9.~*|
000000c0 00 77 33 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 01 |.w3f.F.f........|
000000d0 00 e8 2c 00 e9 a8 03 a1 f8 7d 80 c4 7c 8b f0 ac |..,......}..|...|
000000e0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........|
000000f0 ee a1 fa 7d eb e4 a1 7d 80 eb df 98 cd 16 cd 19 |...}...}........|
00000100 66 60 80 7e 02 00 0f 84 20 00 66 6a 00 66 50 06 |f`.~.... .fj.fP.|
00000110 53 66 68 10 00 01 00 b4 42 8a 56 40 8b f4 cd 13 |Sfh.....B.V@....|
00000120 66 58 66 58 66 58 66 58 eb 33 66 3b 46 f8 72 03 |fXfXfXfX.3f;F.r.|
00000130 f9 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe c2 |..*f3.f..N.f....|
00000140 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a 56 |..f..f....v....V|
00000150 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 0f |@............fa.|
00000160 82 74 ff 81 c3 00 02 66 40 49 75 94 c3 42 4f 4f |.t.....f@Iu..BOO|
00000170 54 4d 47 52 20 20 20 20 00 00 00 00 00 00 00 00 |TMGR ........|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 44 69 |..............Di|
000001b0 73 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 |sk error...Press|
000001c0 20 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 | any key to rest|
000001d0 61 72 74 0d 0a 00 00 00 00 00 00 00 00 00 00 00 |art.............|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 ac 01 b9 01 00 00 55 aa |..............U.|
00000200

Unknown BootLoader on sda3

00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 01 7e 20 |.X.MSDOS5.0...~ |
00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 38 36 00 |........?....86.|
00000020 00 20 08 00 c1 0f 00 00 00 00 00 00 02 00 00 00 |. ..............|
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040 80 00 29 3b 8c a6 fe 4e 4f 20 4e 41 4d 45 20 20 |..);...NO NAME |
00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....|
00000060 7b 8e c1 8e d9 bd 00 7c 88 56 40 88 4e 02 8a 56 |{......|.V@.N..V|
00000070 40 b4 41 bb aa 55 cd 13 72 10 81 fb 55 aa 75 0a |@.A..U..r...U.u.|
00000080 f6 c1 01 74 05 fe 46 02 eb 2d 8a 56 40 b4 08 cd |...t..F..-.V@...|
00000090 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f b6 |.s......f...@f..|
000000a0 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 c9 |...?.......Af...|
000000b0 66 f7 e1 66 89 46 f8 83 7e 16 00 75 39 83 7e 2a |f..f.F..~..u9.~*|
000000c0 00 77 33 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 01 |.w3f.F.f........|
000000d0 00 e8 2c 00 e9 a8 03 a1 f8 7d 80 c4 7c 8b f0 ac |..,......}..|...|
000000e0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........|
000000f0 ee a1 fa 7d eb e4 a1 7d 80 eb df 98 cd 16 cd 19 |...}...}........|
00000100 66 60 80 7e 02 00 0f 84 20 00 66 6a 00 66 50 06 |f`.~.... .fj.fP.|
00000110 53 66 68 10 00 01 00 b4 42 8a 56 40 8b f4 cd 13 |Sfh.....B.V@....|
00000120 66 58 66 58 66 58 66 58 eb 33 66 3b 46 f8 72 03 |fXfXfXfX.3f;F.r.|
00000130 f9 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe c2 |..*f3.f..N.f....|
00000140 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a 56 |..f..f....v....V|
00000150 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 0f |@............fa.|
00000160 82 74 ff 81 c3 00 02 66 40 49 75 94 c3 42 4f 4f |.t.....f@Iu..BOO|
00000170 54 4d 47 52 20 20 20 20 00 00 00 00 00 00 00 00 |TMGR ........|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 44 69 |..............Di|
000001b0 73 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 |sk error...Press|
000001c0 20 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 | any key to rest|
000001d0 61 72 74 0d 0a 00 00 00 00 00 00 00 00 00 00 00 |art.............|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 ac 01 b9 01 00 00 55 aa |..............U.|
00000200

Unknown BootLoader on sda6

00000000 eb 58 90 00 53 44 4f 53 35 2e 30 00 02 10 16 10 |.X..SDOS5.0.....|
00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 48 d7 17 |........?....H..|
00000020 00 00 40 01 f5 27 00 00 00 00 00 00 02 00 00 00 |..@..'..........|
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040 80 00 29 3e 08 45 4a 4e 4f 20 4e 41 4d 45 20 20 |..)>.EJNO NAME |
00000050 20 20 00 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | .AT32 3.....|
00000060 7b 8e c1 8e d9 bd 00 7c 88 56 40 88 4e 02 8a 56 |{......|.V@.N..V|
00000070 40 b4 41 bb aa 55 cd 13 72 10 81 fb 55 aa 75 0a |@.A..U..r...U.u.|
00000080 f6 c1 01 74 05 fe 46 02 eb 2d 8a 56 40 b4 08 cd |...t..F..-.V@...|
00000090 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f b6 |.s......f...@f..|
000000a0 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 c9 |...?.......Af...|
000000b0 66 f7 e1 66 89 46 f8 83 7e 16 00 75 39 83 7e 2a |f..f.F..~..u9.~*|
000000c0 00 77 33 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 01 |.w3f.F.f........|
000000d0 00 e8 2c 00 e9 a8 03 a1 f8 7d 80 c4 7c 8b f0 ac |..,......}..|...|
000000e0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........|
000000f0 ee a1 fa 7d eb e4 a1 7d 80 eb df 98 cd 16 cd 19 |...}...}........|
00000100 66 60 80 7e 02 00 0f 84 20 00 66 6a 00 66 50 06 |f`.~.... .fj.fP.|
00000110 53 66 68 10 00 01 00 b4 42 8a 56 40 8b f4 cd 13 |Sfh.....B.V@....|
00000120 66 58 66 58 66 58 66 58 eb 33 66 3b 46 f8 72 03 |fXfXfXfX.3f;F.r.|
00000130 f9 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe c2 |..*f3.f..N.f....|
00000140 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a 56 |..f..f....v....V|
00000150 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 0f |@............fa.|
00000160 82 74 ff 81 c3 00 02 66 40 49 75 94 c3 42 4f 4f |.t.....f@Iu..BOO|
00000170 54 4d 47 52 20 20 20 20 00 00 00 00 00 00 00 00 |TMGR ........|
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 44 69 |..............Di|
000001b0 73 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 |sk error...Press|
000001c0 20 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 | any key to rest|
000001d0 61 72 74 0d 0a 00 00 00 00 00 00 00 00 00 00 00 |art.............|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 ac 01 b9 01 00 00 00 00 |................|
00000200

Unknown BootLoader on sda7

00000000 70 a5 41 16 ae 99 e0 05 00 00 00 00 00 00 00 00 |p.A.............|
00000010 00 00 00 00 00 00 00 00 00 ff ff 1f 00 00 00 00 |................|
00000020 00 00 00 00 00 00 00 00 00 40 fc 1f 00 00 00 00 |.........@......|
00000030 00 00 00 00 01 04 74 84 f0 43 00 40 80 fe ff ff |......t..C.@....|
00000040 c1 03 e0 ff ff ff ff ff 53 02 ff ff ff ff ff ff |........S.......|
00000050 60 20 00 00 00 a0 01 00 00 20 4a 00 0b 00 00 00 |` ....... J.....|
00000060 0c 03 80 00 40 10 80 10 3e f8 cf fc e3 9c 01 00 |....@...>.......|
00000070 81 9e f0 df ff ff ff ff 3f 09 10 80 12 80 87 c1 |........?.......|
00000080 20 01 00 59 80 09 98 01 c1 00 00 03 02 00 84 d0 | ..Y............|
00000090 18 08 08 00 00 00 8b 03 3e 11 36 72 1c a6 c2 30 |........>.6r...0|
000000a0 e1 0e 08 f8 00 3c cc db 6a 3c 34 c8 e1 3e 00 3c |.....<..j<4..>.<|
000000b0 5e 57 cf 05 02 80 c1 03 24 82 f7 03 0e 80 00 00 |^W......$.......|
000000c0 40 88 aa bb 19 40 18 d8 ff ff ff ff ff ff ff ff |@....@..........|
000000d0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
*
00000100 ff ff ff ff ff ff ff ff 04 10 00 b8 11 59 00 88 |.............Y..|
00000110 62 10 18 19 98 0d 00 00 c0 c2 00 00 04 00 1c 69 |b..............i|
00000120 00 40 00 08 00 00 c0 19 00 28 00 04 20 00 03 00 |.@.......(.. ...|
00000130 e0 fe f7 03 16 00 1c 00 00 f2 2c 02 08 80 fd fd |..........,.....|
00000140 00 c0 00 00 70 12 60 40 ff ff ff ff ff ff ff ff |....p.`@........|
00000150 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
*
000001c0 ff ff ff ff ff ff ff ff ff 10 15 18 a4 5a 12 d8 |.............Z..|
000001d0 21 78 cc 20 10 25 00 88 44 01 00 00 05 60 0c 00 |!x. .%..D....`..|
000001e0 00 20 00 00 82 00 06 49 d6 0c 00 00 40 04 02 00 |. .....I....@...|
000001f0 00 86 4d 10 c2 20 00 08 d0 2f f8 f1 83 61 ff ff |..M.. .../...a..|
00000200

========= Devices which don't seem to have a corresponding hard drive: =========

sdc

=============================== StdErr Messages: ===============================

ls: reading directory sda6/: Input/output error
No volume groups found
bootinfoscript: line 1646: [: 2.73495e+09: integer expression expected

Thanks for reading, regards

oldfred

March 21st, 2013, 05:47 AM

Was this an older copy of Mint? Some old versions of grub2 had a bug where it overwrote the entire efi partition erasing Windows. And you do not have the Windows efi files in your efi partition.

You do show a Windows boot loader in the MBR, so did you convert your Windows install from UEFI to BIOS/CSM/legacy?

You will need to use the 64 bit version of 12.10 or 12.04.2 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
Systems need quick boot or fast boot turned off in UEFI settings. Vital for some systems. Best to backup efi partition and Windows partition first.
Use Windows Disk Tools to shrink Windows main partition, but not to create any new partitions, if installing on same drive.
https://help.ubuntu.com/community/UEFI
https://wiki.archlinux.org/index.php/UEFI
As of 12.04.2, it is possible to install on UEFI systems with Secure Boot enabled (using signed versions of Shim, GRUB, and the Linux kernel). This is only currently set up for Ubuntu (desktop, alternate, and server) and Edubuntu images due to pressures of time; we expect to enable it across the entire Ubuntu family for 12.04.3. Details:
https://wiki.ubuntu.com/PrecisePango.../UbuntuDesktop (https://wiki.ubuntu.com/PrecisePangolin/ReleaseNotes/UbuntuDesktop)

Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
https://help.ubuntu.com/community/Boot-Info
Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
https://help.ubuntu.com/community/Boot-Repair
You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
Install in Ubuntu liveCD or USB or Full RepairCD with Boot-Repair (for newer computers)
http://sourceforge.net/p/boot-repair/home/Home/
https://help.ubuntu.com/community/UbuntuSecureRemix

lucascacho

March 21st, 2013, 10:59 PM

Was this an older copy of Mint? Some old versions of grub2 had a bug where it overwrote the entire efi partition erasing Windows. And you do not have the Windows efi files in your efi partition.

You do show a Windows boot loader in the MBR, so did you convert your Windows install from UEFI to BIOS/CSM/legacy?

You will need to use the 64 bit version of 12.10 or 12.04.2 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
Systems need quick boot or fast boot turned off in UEFI settings. Vital for some systems. Best to backup efi partition and Windows partition first.
Use Windows Disk Tools to shrink Windows main partition, but not to create any new partitions, if installing on same drive.
https://help.ubuntu.com/community/UEFI
https://wiki.archlinux.org/index.php/UEFI
As of 12.04.2, it is possible to install on UEFI systems with Secure Boot enabled (using signed versions of Shim, GRUB, and the Linux kernel). This is only currently set up for Ubuntu (desktop, alternate, and server) and Edubuntu images due to pressures of time; we expect to enable it across the entire Ubuntu family for 12.04.3. Details:
https://wiki.ubuntu.com/PrecisePango.../UbuntuDesktop (https://wiki.ubuntu.com/PrecisePangolin/ReleaseNotes/UbuntuDesktop)

Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
https://help.ubuntu.com/community/Boot-Info
Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
https://help.ubuntu.com/community/Boot-Repair
You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
Install in Ubuntu liveCD or USB or Full RepairCD with Boot-Repair (for newer computers)
http://sourceforge.net/p/boot-repair/home/Home/
https://help.ubuntu.com/community/UbuntuSecureRemix

I did attempt to install Linux Mint on this HD before installing Ubuntu. That must've caused the issues you have listed.

While waiting for your reply, I attempted to install Ubuntu once more. The instalation was succesful and now when I boot I get the GRUB bootloader. Thing is that, while I am able to boot into Ubuntu, trying to boot into windows (by selecting the option labeled Windows 8 (loader) (on /dev/sda3)) returns the following error:

error: can't find command 'drivemap'.
error: invalid EFI file path.

How can I fix that?

Here's the link to the BootInfo report: http://paste.ubuntu.com/5635388

Just to clarify, I installed Ubuntu 12.10 64bit on an ext2 filesystem partition (sda8)

oldfred

March 22nd, 2013, 12:33 AM

Grub2's os-prober still has a bug and only creates BIOS type boot entries.

grub-update fails to detect windows bootloader on a uefi system
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/807801
grub2's os-prober creates wrong style (BIOS) chain boot entry
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1024383
type of entry from Boot-Repair that should work.
'Windows UEFI loader'
Type of entry that does not work:
'Windows ...) (on /dev/sdXY)'

Why ext2? That is now very old, the Ubuntu standard install is ext4 and has been since 9.10. With ext2 you have no journal so repair is difficult or very slow.

lucascacho

March 22nd, 2013, 02:07 AM

Grub2's os-prober still has a bug and only creates BIOS type boot entries.

grub-update fails to detect windows bootloader on a uefi system
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/807801
grub2's os-prober creates wrong style (BIOS) chain boot entry
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1024383
type of entry from Boot-Repair that should work.
'Windows UEFI loader'
Type of entry that does not work:
'Windows ...) (on /dev/sdXY)'

Why ext2? That is now very old, the Ubuntu standard install is ext4 and has been since 9.10. With ext2 you have no journal so repair is difficult or very slow.

Honestly, I used ext2 out of ignorance. Since I hadn't done anything with that install, just performed a clean install using ext4 instead.

Now, regarding the bootloader, I'm sorry but I wasn't able to understand how to proceed. Did you mean that I will be unable to dual boot as I want? Should I use the "Recommended Repair" in Boot-Repair?

oldfred

March 22nd, 2013, 04:47 AM

After reinstall not sure what recommended repair is, but Boot-Repair usually does the correct thing.

You need Boot-Repair to add correct chain entries as os-prober does not currently work.

If both Windows & Ubuntu are installed in UEFI mode, you can dual boot with most UEFI systems, but not all.
Some need secure boot off, some work with secure boot on and some will only dual boot with Linux in BIOS mode and you have to leap thru the hoops of going into UEFI menu can turning UEFI on or off depending on which system you are booting.

But that is an UEFI issue and the vendor has to update his UEFI. You have to be able to secure boot with Ubuntu or Window as Ubuntu is using the Microsoft key.