13
votes
Accepted
Impossible to update UEFI dbx
I had a similar problem on my Dell 5820 under Ubuntu 22.04. I suggest checking whether the binary is used.
To do this I suggest to check whether the file /boot/efi/EFI/Boot/shimx64.efi is listed in ...
- 146
12
votes
Why do I get "Warning: os-prober will not be executed to detect other bootable partitions." after running "apt upgrade"?
The warning is generated by /etc/grub.d/30_os-prober, take a look at the lines 43 to 59:
if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
grub_warn "$(gettext_printf &...
- 14.3k
6
votes
Accepted
Ubuntu 22.04 build ISO (Both: MBR and EFI )
Ubuntu 22.04 build ISO (Both: MBR and EFI )
The youngest release of xorriso (1.5.4) can tell:
$ xorriso -indev ubuntu-22.04-desktop-amd64.iso -report_el_torito as_mkisofs
-V 'Ubuntu 22.04 LTS amd64'
-...
- 111
6
votes
Ubuntu 22.04 only boots up to a terminal, gui not opening
I had the same issue; just solved it.
The reason I couldn't do sudo apt install --reinstall ubuntu-desktop that my software repository list (/etc/apt/sources.list) had been messed up. Luckily I was ...
- 61
5
votes
Accepted
Does Ubuntu 22.04 require a UEFI instead of a BIOS?
Since Ubuntu 20.10 Groovy, many non-UEFI, BIOS-only machines fails to boot Ubuntu ISO. In order to create a bootable USB drive for these machines, you will need to use mkusb > dus, iso2usb > dus,...
- 2,001
5
votes
Accepted
Will installing Ubuntu over Windows 11 with BitLocker affect booting?
BitLocker is simply Microsoft's proprietary implementation of full disk encryption. Whether or not a drive has BitLocker encryption is not at all relevant to installing Ubuntu to replace all the data ...
- 11.6k
4
votes
Can I boot memtest86+ if I'm using UEFI?
PCMemTest (Ubuntu 22.04)
Use PCMemTest. Since Ubuntu 22.04 the PCMemTest is available from the Ubuntu repository. PCMemTest is a fork of MemTest86+ and it works fine on UEFI too. As it is part of ...
- 590
4
votes
Can not boot Ubuntu 22.04, dual boot installation, no GRUB loader
It appears that OS probe is disabled in GRUB 2.06 that is shipped with 22.04, so you have found the "gotcha". However, it can be resolved by editing the grub config file to enable successful ...
- 43
4
votes
I've had 18.04 for years on my Acer Aspire 5, I would like to reinstall and start over. Do I need to change anything (again) in the BIOS or UEFI?
A couple years ago I had to install Wine to do some stuff for work and I'm kind of suspicious that it's malicious.
Nope, WINE is not malware. The software that WINE runs could be, but WINE itself is ...
- 2,815
4
votes
Accepted
"No operating system found" after clean install of Ubuntu 22.04
Thank you for all your help, this was very interesting. My machine had an old BIOS, which did NOT expose an option to disable "Compatibility support Module".
Only after updating BIOS the ...
- 171
4
votes
Impossible to update UEFI dbx
Your Ubuntu Linux 20.04 LTS contains grub2 and other booting software in older versions, which are blacklisted in DBX version 217 due to security issues. Updating the DBX database in flash of your PC ...
- 41
4
votes
Dual boot Ubuntu 22.04 in Legacy BIOS mode (MBR partition)
Dual boot Ubuntu 22.04 in Legacy BIOS mode
Unplug your Windows drive.
Install Ubuntu on the other drive in the same BIOS/UEFI mode Windows uses, (ie Legacy).
Plug in Windows drive.
Set Ubuntu drive ...
- 18.3k
3
votes
When i installed Ubuntu 22.04 alongside Windows for Dual Boot all of this happened and i didn't find any solution online to my problem
You messed up when you created partitions for Ubuntu before installation.
In order to get the "Install alongside Windows" option, you must have enough unallocated free space for Ubuntu. That ...
- 11.6k
3
votes
Accepted
What is the correct type and size for a boot partition for BIOS?
As requested, some background/expanded comment:
Bootloaders exist to run a kernel, wherever it is on the disk.
The term "boot partition" is a bit ambiguous, sometimes it may be used to refer ...
- 16.5k
3
votes
Accepted
Does the HP ProDesk 400 G3 support dual boot between Windows 10 & Ubuntu 20.0.4
YES
YES but probably with caveats. Some HP models always boot Windows by default but it's always possible to select another OS from the one-time boot menu.
Secure Boot has nothing to do with it and ...
- 1,951
3
votes
Ubuntu 22.04 on MSI laptop webcam no longer working
Check for Camera, it could be locked. Unlock it by pressing Fn+F6 on your keyboard.
It happened with me too on my MSI laptop.
- 31
3
votes
I've had 18.04 for years on my Acer Aspire 5, I would like to reinstall and start over. Do I need to change anything (again) in the BIOS or UEFI?
If it worked to install and run Ubuntu 18.04.x LTS, and the computer has an 8th generation Intel i5 processor and 8 GB RAM (as I read from a data sheet via the internet), there should be no problem to ...
- 44k
3
votes
Accepted
How to Maintain BIOS/UEFI Flash Drive with Full Disk Encryption
The Tale of Two grub.cfg
This USB flash drive installation has two separate grub.cfg in two locations. One is used for booting BIOS only computers and the other is used for booting UEFI computers. ...
- 30.3k
3
votes
How to install Ubuntu on a PC where RST which can not be disabled?
You can easily install Ubuntu with enabled RST in BIOS. I did it many times.
Linux and Ubuntu support RST RAIDS, but there are problems with grub, that can't without some hacks.
A problem arised when ...
- 87.5k
3
votes
How can I get rid of the UEFI partition and still boot from the drive?
OK the solution you are looking for is possible but there's a million ways to mess up and leave you with un-bootable system.
Furthermore it would be a bad idea because if you later need to remove one ...
- 1,039
3
votes
How to boot Ubuntu with legacy BIOS and GPT, without to need Grub, LiLo or UEFI in extra partition or on ubuntu partition?
AFAIK, you can't. Your BIOS goes to the first sector of your hard disk (MBR) to see where to boot. In the MBR, it finds a link to a bootloader (in the case of Ubuntu it's GRUB) and the bootloader ...
- 492
3
votes
Accepted
My /boot/efi is not pointing to the right ESP partition
Seems you have somehow destroyed the ESP on nvme0n1 (your Windows drive),I see only an unformatted empty partition nvme0n1p1. Now you have only the ESP on nvme1n1( your linux drive) which is nvme1n1p2....
- 14.3k
2
votes
Error upgrading grub-efi-amd64-signed - special device [old SSD] does not exist
I had the same problem on AWS EC2 instance restored from AMI. I solved it by:
sudo rm /var/cache/debconf/config.dat
After this I was able to run sudo dpkg --configure -a without problems
- 1,795
2
votes
Convert MBR partition to GPT without data loss
I can't reply to @chutz, so I'm making my own comment: DO NOT DO WHAT HE SAYS ABOUT BACKUP AND SUBSEQUENT RESTORE OF THE MBR. The MBR is 512 bytes, total. So while I 100% agree with backing up the ...
- 68
2
votes
Dual Boot (Win10 & Ubuntu20.04) on 2 Hard drives - Grub problem
you probably cannot select the sd card as a boot medium (like usb,cd or lan) in your bios.
if not available for boot i don't think you can use it for an os.
you might stick the sd card in a usb card ...
- 41
2
votes
stdin: invalid argument
I solved this problem using just taking out and pluging back in the flash drive when it shows the message "stdin: invalid argument". Worked like a charm. The flash drive I used was 32 GB ...
- 21
2
votes
Accepted
What is "Platform is in setup mode" mean? SecureBoot disabled although TPM is enabled
As far as I understand it, this means that your system doesn't have any secure boot keys in memory right now and awaits those keys, so the factory keys probably got deleted by accident.
In the setup ...
- 36
2
votes
How to delete GRUB from the wrong drive?
Welcome to AskUbuntu.First of all, if you didn't make a specific other /boot partition on your 'Windows'-drive during install, don't delete any partition. In that case Grub is installed in the (only) ...
- 1,392
2
votes
Install Ubuntu 20.04 along side windows 10 - fail. Forcing Windows 10 To be UEFI
In order to get the guided "Install Alongside Windows" option, all of the following must be true:
You need viable bootable Ubuntu installation media. In order to confirm this, you must ...
- 11.6k
2
votes
Accepted
I think I deleted boot files, but I restored with back up. Does it still affect my computer?
From what you have said I don’t think you have damaged your installation at all after restoration from backup. Your first mount command almost certainly mounted your system at /mnt/pico. That means ...
- 1,760
Only top scored, non community-wiki answers of a minimum length are eligible