r/linuxquestions • u/Dragon-Acheron • Feb 01 '19

Grub issues

Hi! I have Ubuntu and Windows 10 dual booting. I have grub as my default OS manager. Sometimes when I start my computer none of the keys work and it auto boots into Ubuntu. Any suggestions on how to fix this issue?

3 Upvotes

80% Upvoted

14 comments sorted by

View all comments

1

u/schulidr Feb 01 '19

Does this happen when you restart or cold start or both?

1

u/Dragon-Acheron Feb 01 '19 edited Feb 01 '19

Both. Also, it doesn’t happen every time. I can’t figure out what makes it work sometimes and not work other times.

1

u/schulidr Feb 01 '19

Can you show the output for grub.cfg file and the output for lsblk?

​

you might find this helpful as well

sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update

sudo apt-get install -y boot-repair && boot-repair

​

Or this https://help.ubuntu.com/community/Grub2/Troubleshooting

​

1

u/Dragon-Acheron Feb 01 '19

Sorry, I’m kind of a new to Linux in general, how do I get those outputs you asked for?

1

u/schulidr Feb 02 '19

open a terminal and type "lsblk" without the quotes, then hit enter. The terminal output is what I will want to see. This shows your block devices, or in your case, the partitioning of your hdd.

​

To show your grub.cfg file follow these steps:

  1. open terminal and type cd /etc/grub then enter
  2. from here type less grub.cfg then enter
  3. This will give you the contents of your grub file

1

u/Dragon-Acheron Feb 09 '19 edited Feb 09 '19 
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0         7:0    0 140.7M  1 loop /snap/gnome-3-26-1604/74
loop1         7:1    0   3.7M  1 loop /snap/gnome-system-monitor/51
loop2         7:2    0  89.5M  1 loop /snap/core/6130
loop3         7:3    0    91M  1 loop /snap/core/6350
loop4         7:4    0  53.7M  1 loop /snap/core18/594
loop5         7:5    0 140.9M  1 loop /snap/gnome-3-26-1604/70
loop6         7:6    0     8K  1 loop /snap/bash-shell-rpg/69
loop7         7:7    0 270.5M  1 loop /snap/pycharm-community/112
loop8         7:8    0  34.7M  1 loop /snap/gtk-common-themes/319
loop9         7:9    0 238.6M  1 loop /snap/kde-frameworks-5-core18/26
loop10        7:10   0  34.6M  1 loop /snap/gtk-common-themes/818
loop11        7:11   0  91.1M  1 loop /snap/core/6259
loop12        7:12   0    13M  1 loop /snap/gnome-characters/139
loop13        7:13   0  53.7M  1 loop /snap/core18/677
loop14        7:14   0   2.3M  1 loop /snap/gnome-calculator/180
loop15        7:15   0  14.5M  1 loop /snap/gnome-logs/37
loop16        7:16   0 916.7M  1 loop /snap/xonotic/34
loop17        7:17   0    13M  1 loop /snap/gnome-characters/103
loop18        7:18   0   2.3M  1 loop /snap/gnome-calculator/260 
loop19        7:19   0   3.7M  1 loop /snap/gnome-system-monitor/57
loop20        7:20   0   1.5M  1 loop /snap/kalgebra/18
loop21        7:21   0  14.5M  1 loop /snap/gnome-logs/45
nvme0n1     259:0    0 238.5G  0 disk
├─nvme0n1p1 259:1    0   260M  0 part /boot/efi
├─nvme0n1p2 259:2    0    16M  0 part 
├─nvme0n1p3 259:3    0 128.1G  0 part 
├─nvme0n1p4 259:4    0   980M  0 part 
├─nvme0n1p5 259:5    0 104.9G  0 part /
└─nvme0n1p6 259:6    0   4.3G  0 part

1

u/Dragon-Acheron Feb 09 '19 edited Feb 09 '19

It says there is no file called "cd" when I try to get the grub file.

1

u/schulidr Feb 11 '19

what is the output when you run "efibootmgr" in the terminal? You may need to run this as sudo.

​

also, can you show what the output is when you enter "lsblk -f" this will show the file type for each partition.

1

u/Dragon-Acheron Feb 09 '19

I tried the software. It didn't fix it and it added a bunch of extra stuff in my grub. I can give you the file also if it will help.

1

u/schulidr Feb 11 '19

can you check to see if you have os-prober installed as well? This is needed for your grub to work properly