Booting from the GNU GRUB menu
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I have a Dell T5810 running Ubuntu 16.04 LTS. On Friday 9th Feb a software update failed and ended in the GNU GRUB menu.
If I select boot it tells me I need to load the kernel first. If I select exit, it tells me there are no bootable devices.
I have done a full hardware test and it has passed.
Is is possible to boot from this situation without losing the contents of the disc? If so how?
Yours,
William McGinty
boot grub2
asked Feb 10 at 12:05
W.McGinty
12
add a comment |Â
up vote
0
down vote
favorite
I have a Dell T5810 running Ubuntu 16.04 LTS. On Friday 9th Feb a software update failed and ended in the GNU GRUB menu.
If I select boot it tells me I need to load the kernel first. If I select exit, it tells me there are no bootable devices.
I have done a full hardware test and it has passed.
Is is possible to boot from this situation without losing the contents of the disc? If so how?
Yours,
William McGinty
boot grub2
asked Feb 10 at 12:05
W.McGinty
12
Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have a Dell T5810 running Ubuntu 16.04 LTS. On Friday 9th Feb a software update failed and ended in the GNU GRUB menu.
If I select boot it tells me I need to load the kernel first. If I select exit, it tells me there are no bootable devices.
I have done a full hardware test and it has passed.
Is is possible to boot from this situation without losing the contents of the disc? If so how?
Yours,
William McGinty
boot grub2
asked Feb 10 at 12:05
W.McGinty
12
I have a Dell T5810 running Ubuntu 16.04 LTS. On Friday 9th Feb a software update failed and ended in the GNU GRUB menu.
If I select boot it tells me I need to load the kernel first. If I select exit, it tells me there are no bootable devices.
I have done a full hardware test and it has passed.
Is is possible to boot from this situation without losing the contents of the disc? If so how?
Yours,
William McGinty
boot grub2
boot grub2
asked Feb 10 at 12:05
W.McGinty
12
asked Feb 10 at 12:05
W.McGinty
12
asked Feb 10 at 12:05
W.McGinty
12
asked Feb 10 at 12:05
W.McGinty
12
asked Feb 10 at 12:05
W.McGinty
12
12
Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55
add a comment |Â
Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55
Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55
add a comment |Â
1 Answer
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0
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Reboot or cold start the computer.
Immediately after the BIOS/UEFI splash screen during boot, With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.
From the purple GRUB screen select Advanced options for Ubuntu with the ↑ and ↓ keys and press Enter.
A new purple screen will appear showing a list of kernels. Select an older kernel version instead of the latest kernel version and press Enter.
Ubuntu will load the selected kernel and proceed to the login screen as usual.
After rebooting
Find the latest installed kernel version in the results of the following command:
dpkg -l | grep "linux-[a-z]*-"Uninstall the latest kernel.
sudo apt purge <latest-kernel-version-number>Replace
<latest-kernel-version-number>in the above command with the latest kernel version number.Update grub.
sudo update-grubReboot.
sudo rebootDon't let Ubuntu update the kernel to the kernel version that caused the GRUB menu boot problem again, or else you'll get the same problem that you got before. Instead wait for the next kernel update and update to that kernel version.
answered Feb 10 at 12:08
karel
51.7k11107131
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
Reboot or cold start the computer.
Immediately after the BIOS/UEFI splash screen during boot, With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.
From the purple GRUB screen select Advanced options for Ubuntu with the ↑ and ↓ keys and press Enter.
A new purple screen will appear showing a list of kernels. Select an older kernel version instead of the latest kernel version and press Enter.
Ubuntu will load the selected kernel and proceed to the login screen as usual.
After rebooting
Find the latest installed kernel version in the results of the following command:
dpkg -l | grep "linux-[a-z]*-"Uninstall the latest kernel.
sudo apt purge <latest-kernel-version-number>Replace
<latest-kernel-version-number>in the above command with the latest kernel version number.Update grub.
sudo update-grubReboot.
sudo rebootDon't let Ubuntu update the kernel to the kernel version that caused the GRUB menu boot problem again, or else you'll get the same problem that you got before. Instead wait for the next kernel update and update to that kernel version.
answered Feb 10 at 12:08
karel
51.7k11107131
add a comment |Â
up vote
0
down vote
Reboot or cold start the computer.
Immediately after the BIOS/UEFI splash screen during boot, With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.
From the purple GRUB screen select Advanced options for Ubuntu with the ↑ and ↓ keys and press Enter.
A new purple screen will appear showing a list of kernels. Select an older kernel version instead of the latest kernel version and press Enter.
Ubuntu will load the selected kernel and proceed to the login screen as usual.
After rebooting
Find the latest installed kernel version in the results of the following command:
dpkg -l | grep "linux-[a-z]*-"Uninstall the latest kernel.
sudo apt purge <latest-kernel-version-number>Replace
<latest-kernel-version-number>in the above command with the latest kernel version number.Update grub.
sudo update-grubReboot.
sudo rebootDon't let Ubuntu update the kernel to the kernel version that caused the GRUB menu boot problem again, or else you'll get the same problem that you got before. Instead wait for the next kernel update and update to that kernel version.
answered Feb 10 at 12:08
karel
51.7k11107131
add a comment |Â
up vote
0
down vote
up vote
0
down vote
Reboot or cold start the computer.
Immediately after the BIOS/UEFI splash screen during boot, With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.
From the purple GRUB screen select Advanced options for Ubuntu with the ↑ and ↓ keys and press Enter.
A new purple screen will appear showing a list of kernels. Select an older kernel version instead of the latest kernel version and press Enter.
Ubuntu will load the selected kernel and proceed to the login screen as usual.
After rebooting
Find the latest installed kernel version in the results of the following command:
dpkg -l | grep "linux-[a-z]*-"Uninstall the latest kernel.
sudo apt purge <latest-kernel-version-number>Replace
<latest-kernel-version-number>in the above command with the latest kernel version number.Update grub.
sudo update-grubReboot.
sudo rebootDon't let Ubuntu update the kernel to the kernel version that caused the GRUB menu boot problem again, or else you'll get the same problem that you got before. Instead wait for the next kernel update and update to that kernel version.
answered Feb 10 at 12:08
karel
51.7k11107131
Reboot or cold start the computer.
Immediately after the BIOS/UEFI splash screen during boot, With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu. (If you see the Ubuntu logo, you've missed the point where you can enter the GRUB menu.) With UEFI press (perhaps several times) the Esc key to get to the GRUB menu. Sometimes the manufacturer's splash screen is a part of the Windows bootloader, so when you power up the machine it goes straight to the GRUB screen, and then pressing Shift is unnecessary.
From the purple GRUB screen select Advanced options for Ubuntu with the ↑ and ↓ keys and press Enter.
A new purple screen will appear showing a list of kernels. Select an older kernel version instead of the latest kernel version and press Enter.
Ubuntu will load the selected kernel and proceed to the login screen as usual.
After rebooting
Find the latest installed kernel version in the results of the following command:
dpkg -l | grep "linux-[a-z]*-"Uninstall the latest kernel.
sudo apt purge <latest-kernel-version-number>Replace
<latest-kernel-version-number>in the above command with the latest kernel version number.Update grub.
sudo update-grubReboot.
sudo rebootDon't let Ubuntu update the kernel to the kernel version that caused the GRUB menu boot problem again, or else you'll get the same problem that you got before. Instead wait for the next kernel update and update to that kernel version.
answered Feb 10 at 12:08
karel
51.7k11107131
edited Sep 23 at 4:36
answered Feb 10 at 12:08
karel
51.7k11107131
answered Feb 10 at 12:08
karel
51.7k11107131
answered Feb 10 at 12:08
karel
51.7k11107131
51.7k11107131
add a comment |Â
add a comment |Â
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Thanks for looking at this Karel. The GRUB menu is really basic, about fifty different commands, most of which I don't understand. "Advanced options for Ubuntu" isn't one of them.
– W.McGinty
Feb 10 at 16:36
OK: The GRUB command 'ls' results in "(hd1) error: failure reading sector 0xfc from 'hd1'".
– W.McGinty
Feb 10 at 20:55