Dual booting windows 8/Ubuntu 12.04.2, GRUB doesn't appear and Ubuntu never boots
Try using Boot Repair in Ubuntu.
Installing Boot Repair
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Open the Terminal, then type:
sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
Press Enter.
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Then type:
sudo apt-get install -y boot-repair && (boot-repair &)
Press Enter
Using Boot Repair
Search for Boot Repair in the dash and launch it. Then click the "Recommended Repair" button and wait until it's finished.
Reboot. It should work now, although your GRUB is probably littered with useless entries.
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black sensei
Updated on September 18, 2022Comments
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black sensei over 1 year
I got a new ACER predator AG3620-UR308 which came with windows 8 and I wanted to run ubuntu 12.04.2 on it as a dual boot machine. The box came with 2TB HDD. So I made 4 partitions with a raw partition just after the windows installation partition.
I created a swap area and finished the installation. GRUB was installed on the only drive there which is
/dev/sda
.After reboot, GRUB doesn't even come up. It always boots Windows 8. I repeated installation process twice and got the same result. I disabled
secure boot
from the BIOS and enabledCSM
(don't even know what it means) according to Acer custhelp site . I boot from USB and got this:$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x8c361cb5 Device Boot Start End Blocks Id System /dev/sda1 1 3907029167 1953514583+ ee GPT Partition 1 does not start on physical sector boundary. Disk /dev/sdb: 8178 MB, 8178892800 bytes 255 heads, 63 sectors/track, 994 cylinders, total 15974400 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0006a87e Device Boot Start End Blocks Id System /dev/sdb1 * 2048 15972351 7985152 b W95 FAT32
Can anybody shed some light? thank you in advance
EDIT
I just did another trial with 13.04 this time and still no luck.bios: secure-boot: disabled enable CSM : always
- Deleted previous Ubuntu partition and swap area partition.now having free space
- Used usb installer to prepare usb with ubuntu-13.04-desktop-amd64.iso
- rebooted : liveusb didnt detect windows 8, used something else
- created partition ext4 for
/
- created partition for swap-area
- default grub path is
/dev/sda
and clicked install
Acer always boots into windows.
NEW EDIT
After following the boot-repair suggestion installed on the liveUSB, I can now see grub but can't log into windows anymore as it's not in the list. The boot-repair also completed with an error, i guess logged on pastin.ubuntu
How my drive is organized
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Web-E almost 11 yearsWindows 8 pre installed? Turned off secure boot? This can help - askubuntu.com/questions/221835/…
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black sensei almost 11 yearsI am having this error: Path
/boot/grub
is not readable by Grub on boot. Installation ins impossible. Aborting -
Danatela almost 11 years@black, is your boot settings branch located on another partition than Ubuntu? Then you have to do some preparations. I'll edit my answer to make it more helpful in thes situation.
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black sensei almost 11 yearsHi, I've updated my post with
NEW EDIT
. kindly see into it , thanks -
stommestack almost 11 yearsWhat was the error that boot repair gave?
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black sensei almost 11 yearssorry i thought i pasted it paste.ubuntu.com/5838337
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stommestack almost 11 years@blacksensei Sorry I didn't see it. Hm...
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black sensei almost 11 yearsI run it again and it's solved. Thanks to who ever worked on
boot-repair
and thanks to @com.BOY -
stommestack almost 11 years@blacksensei If this answer solved your question, please click the checkmark next to it.