Questions tagged [dual-boot]

For questions regarding the installation of two or more operating systems on a single computer.

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Ubuntu 20.04 boot error - Firmware bug; Hardaware error; ACPI does not cover the entire command/response buffer;

I get this error with some linux distros (I use ubuntu, but I checked and tested several others distros to see if the same problem occurred) when I click to try or when I install and boot (exept ...
mnicolau's user avatar
  • 111
8 votes
0 answers
3k views

Can't Boot on Dual Monitor

Summary of issue: Can't see GRUB2 boot menu on monitor connected via DVI port. Up until recently I had everything working fine for my Windows 10 / Ubuntu 18.04.2 dual boot setup. I had two monitors: ...
GinjaNinja's user avatar
7 votes
0 answers
3k views

Windows 11 erases GRUB every time I launch it from GRUB itself

So I have been trying to solve this problem from several hours for now: Problem explanation I bought a new computer (HP OMEN 15) with Windows 11 already installed. I did a dual boot with ubuntu, which ...
Julien Bocage's user avatar
7 votes
1 answer
326 views

Ubuntu (regardless of version) keeps freezing

My pc is about 8 years old. Back then, it had an amd Sempron 64 bit processor, and 1GB of RAM. I dual booted it with Windows XP and Ubuntu 16.04 LTS. Ubuntu worked fine for few minutes, and then ...
Caramello's user avatar
  • 280
6 votes
1 answer
7k views

Hard drive error : EXT4-fs error - Failed to write entry, ignoring: Read-only file system

I have a Asus R556L, running Ubuntu 18.04LTS on dual boot with Windows 10. The sata mode in the bios is AHCI. Ubuntu works fine, but after working for a while, it goes to the black terminal screen ...
Cabirto's user avatar
  • 129
6 votes
0 answers
2k views

18.04 Boot to black unless I delete $vt_handoff grub parameter, related to Nvidia drivers?

I started having problems booting after I tried to use prime-select for the first time to switch between my laptop's Nvidia GTX 960M and Intel graphics, using the same nvidia-390 driver that had ...
zygomycete's user avatar
6 votes
1 answer
11k views

Problem Loading UEFI:db X.509 certificate (-65)

file name: ubuntu-18.04.1-desktop-amd64.iso. currently windows 8.1 installed on my laptop. I am trying to install ubuntu from usb flash drive and created a bootable usb using rufus. When I boot from ...
Sami Hilal's user avatar
6 votes
4 answers
8k views

Change partition sizes of dualboot system

I know that there are some similar topics to this, however I was not sure which of them could be applied to my case. Because I am afraid of destroying my system, I hope you can give me some advice on ...
Raphael's user avatar
  • 161
6 votes
1 answer
21k views

What location to put bootloader, when running multiple drives and partition

I have Win8 on my desktop, where a 120G SSD is used to run windows and some select applications, while I have a 2TB HDD to provide basic file storage and where possible, install applications instead ...
Mr G's user avatar
  • 356
6 votes
1 answer
13k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
stranger_anon's user avatar
5 votes
2 answers
3k views

Error installing boot-repair on ubuntu 19.10

I am with problems on grub boot initializer. When I go install the boot-repair via live CD to Ubuntu 19.10, I am getting the follow error. ubuntu@ubuntu:~$ sudo apt install boot-repair Reading ...
Andre Leoni's user avatar
5 votes
0 answers
3k views

Is it possible to hibernate BOTH windows and ubuntu in a dual boot setup?

I've searched through the related questions posted here and didn't find this particular situation. I have Windows 10 that I often hibernate in order to boot again onto ubuntu 18.10 (which i'm still ...
IliassA's user avatar
  • 51
5 votes
3 answers
10k views

USB Wifi adapter Realtek 8811AU/8812AU not recognized

I have freshly installed ubuntu 18.04.1 LTS. My usb wifi adapter which works perfetcly fine in windows 10 in the same system (dual boot), is not recognized here. the chip of the adapter is a Realtek ...
Ankur Walia's user avatar
5 votes
0 answers
325 views

Ubuntu 14.04.4 macbookpro11,5 install problem

I'm relatively new to Linux/Ubuntu (i.e. I mightn't understand overly detailed tech terms etc) and have come across the following problem: I tried to install Ubuntu on a new (Jan 2016) MBP 11,5 with ...
Michael's user avatar
  • 51
5 votes
0 answers
3k views

How to use a `dd if=/dev/sda of=/dev/sdb` drive?

Given: a sudo dd if=/dev/sda of=/dev/sdb duplicate drive of the main boot drive. How does one safely, reliably : mount a dd duplicate drive as a second drive? setup the dd duplicate drive as ...
marc-medley's user avatar
  • 1,130
5 votes
7 answers
47k views

No option to choose between Ubuntu or Windows at startup; tried many suggestions already

Yesterday I used a live cd to install Ubuntu 14.04 on a computer already loaded with Windows 8. The Ubuntu install did NOT recognize any operating system on the computer, so I chose Something else ...
aaaaaaashton's user avatar
5 votes
3 answers
4k views

Mouse and Keyboard will not work Windows 7 Dual Boot

My mouse and keyboard work fine in Ubuntu, as well as grub. However, when I boot into Windows 7, I cannot get past the login screen because the mouse and keyboard do not work. The lack of light on my ...
suchlinux's user avatar
5 votes
2 answers
17k views

hd1 cannot get C/H/S values

Ok, I know there are many questions about this topic, but I can't found a convince answer (fixing the problem or not). Recently I bought an SSD drive and installed in main SATA (hd0), I've replaced ...
Johnny Willer's user avatar
4 votes
2 answers
269 views

Change encrypted 18.04 install to dual-boot along side 22.04?

I'm trying to install Jammy in a dual-boot, side-by-side on laptops with an existing LUKS-encrypted Bionic install. (We need access to both on the same PC for development purposes, and VMs aren't ...
chris's user avatar
  • 79
4 votes
0 answers
805 views

System hangs/breaks when fstrim runs (dual boot on SSD setup)

I have a Windows 10 / Kubuntu 22.04 dual boot setup with both OS partitions on the same SSD drive. Every week fstrim.timer triggers fstrim.service to run in background and as a result my system "...
Ahmet Sait's user avatar
4 votes
0 answers
4k views

Ubuntu 22.04 and Windows 10 Pro - Can I encrypt both OS's at the same time with Bitlocker + LUKS

I have alaptop with Ubuntu 22.04 and Win 10 Pro installed. Currently both are unencrypted as I had to remove Bitlocker to install Ubuntu alongside Win 10 Boot Manager. Is there a way I can use ...
User's user avatar
  • 53
4 votes
0 answers
4k views

Why Ubuntu 20.04 userspace boot time is so slow

My ubuntu system is taking over a minute to boot up. I have checked systemd-analyze and it is the userspace that is taking this much time alone. I have already checked other similar problems on ...
Hiro's user avatar
  • 93
4 votes
3 answers
2k views

Laptop Heating in ubuntu , no issue in windows what to do?

I have installed Ubuntu 18.04 alongside windows in msi GS75 Stealth-243(Intel® Core™ i7-9750H CPU @ 2.60GHz × 12, Intel® UHD Graphics 630 (CFL GT2)). I'm experiencing unusual heating issues when I'm ...
Rani 's user avatar
  • 41
4 votes
0 answers
628 views

No cursor blinking(actually not visible only) in the Ubuntu's default text editor

I've installed Ubuntu dual boot(version 20.04 LTS) and when I opened the Ubuntu's default text editor, I didn't see any cursor blinking. I'm not talking about mouse pointer that is visible, only the ...
Chaitanya M's user avatar
4 votes
0 answers
936 views

How to add bitlocker encrypted Windows 10 to grub bootloader?

Ubuntu 18.04 is installed on /dev/sdb2, grub bootloader on /dev/sdb1 and Windows 10 on a separate SSD /dev/sdc1. I tried update-grub and os-prober but grub would not find it. How can I add bitlocker ...
Anno's user avatar
  • 526
4 votes
0 answers
3k views

error: file ./boot' not found, after installing Ubuntu 20.04 on an external SSD

I've decided recently to install Ubuntu on an external SSD. I want to use it as a "work OS" that I could plug anywhere. After some research, I found that with usb 3.0 throughput, there are ...
Asarim's user avatar
  • 41
4 votes
0 answers
2k views

Grub Theme - how to specificy the font properly

I want to adjust a grub theme to have a truly large font (about double from what is normal). I usually work with the install.sh that comes with it and with grub-customizer. The easy part, consensus ...
Frank N's user avatar
  • 1,340
4 votes
0 answers
903 views

Warning message at boot: Option 'size' missing in crypttab (Ubuntu 20.04)

I am dual booting Ubuntu 20.04 installed with a dedicated home and swap partition. I encrypted both home and swap using encryptfs after install. Since then no issues or whatsoever. After running some ...
user1086913's user avatar
4 votes
0 answers
3k views

Remove grub2 core.img (having 2) and resize /boot/efi

Some time ago I installed Ubuntu alongside Windows 10. I think I might have done some mistakes while installing Ubuntu. I fact, I had to install it twice and I might have done bad things to my ...
JacksOnF1re's user avatar
4 votes
0 answers
2k views

desktop pc crashed on ubuntu 20.04 LTS release upgrade from 19.10

Have a Dell laptop pc dual booting windows 10 pro and Ubuntu 19.10. It was working fine for past few months. I tried to do a release upgrade to ubuntu 20.04 LTS. The upgeade was happening smoothly ...
Ashok Joglekar's user avatar
4 votes
1 answer
1k views

Dual boot - Ubuntu 18.04 boots only when secure boot is enabled

My Ubuntu 18.04 installation stopped booting normally lately - I can see only blank screen with a coursor in top left corner. But when I enabled UEFI secure boot options, the booting is complete. The ...
jakes's user avatar
  • 145
4 votes
1 answer
3k views

Problem with dual booting windows 10 and Ubuntu 16.04

A little background before I go into the main problem - I have windows installed in a 256GB nvme ssd that came with the laptop. Then I added a 2.5" SSD manually (Samsung Evo 860) for additional space ...
HariP19's user avatar
  • 41
4 votes
0 answers
4k views

smartctl: Unable to detect device type

I have the following disk partition Filesystem 1K-blocks Used Available Use% Mounted on udev 3964076 0 3964076 0% /dev tmpfs 798780 9748 789032 2% /...
Paul Lu's user avatar
  • 41
4 votes
2 answers
1k views

19.10 freezes at blank purple screen

I upgraded to Ubuntu 19.10 yesterday while going to bed and might have fallen asleep while installing. I don't recall if I interrupted or succesfully installed it. I dual boot Ubuntu and windows ...
Jonas Grønbek's user avatar
4 votes
0 answers
1k views

Grub only works after viewing bios first

I have my PC set to dual boot with Ubuntu 18 and Windows 10 but, when I boot my PC, grub doesn't start properly (it displays the grub command line instead of loading the options to start Ubuntu or ...
user avatar
4 votes
0 answers
173 views

computer freezes

Sometimes my computer freezes while using Ubuntu. But it works fine when I use Windows 10. I am currently using Ubuntu 18.04 with dual booting Windows 10. My system specs are: 2.41GHz Intel Pentium ...
bibhudhendra's user avatar
4 votes
1 answer
2k views

Ubuntu Server 18.04 installer does not show partitions

I'm trying to install Ubuntu Server 18.04 to dual boot with Windows. When I run the Ubuntu Server installer, it doesn't show any partitions on the disk and instead recognizes my entire disk as ...
Vinicius Lambardozzi's user avatar
4 votes
0 answers
1k views

Full Disk Encryption and Custom Partitioning on Ubuntu 18.04

How can I use Full Disk Encryption (LUKS) with a custom partition scheme on Ubuntu 18.04? Full Disk Encryption seems to be allowed on installation only if the option "Erase Disk and Install Ubuntu" ...
Pablo VP's user avatar
4 votes
2 answers
3k views

Ubuntu server install on existing partition

I am trying to install Ubuntu Server 18.04 LTS on an existing partition on a Win 10 + Ubuntu machine (replacing the existing 16.04). However, on the disk setup stage, the installer does not show any ...
Abhay Mittal's user avatar
4 votes
0 answers
2k views

Ubuntu/Win10 Dual Boot - Can't boot into Windows from GRUB

I'm running a (K)Ubuntu 17.10 and Windows 10 Dual Boot. I can boot into Windows if I choose the corresponding entry in the UEFI Boot Menu, however I can't boot Windows from GRUB. It is correctly ...
flhp's user avatar
  • 41
4 votes
1 answer
900 views

Error while copying files from Windows to Ubuntu after Windows update

I have a dual boot system with windows 10 and Ubuntu 16.04. Until now I could freely copy and paste things from Windows to Ubuntu while accessing Ubuntu. After a Windows update I can't do it. I ...
sarthak agarwal's user avatar
4 votes
1 answer
2k views

Bitlocker-encrypted Windows and LUKS-encypted Xubuntu in Dual Boot

Company policies instruct me to use a Bitlocker encrypted Windows 10 (No turning off Secure Boot), but I also use Linux, which has to be LUKS encrypted. Now I need to set this system up for Dual-Boot ...
Samichio's user avatar
4 votes
2 answers
7k views

15.10 No GRUB menu with windows 10

I am trying to get Ubuntu 15.10 dual booted with Windows 10. But the GRUB menu does not show up. The PC came pre-installed with Windows 8.1 and I upgraded it to Windows 10. Following directions from ...
Ram's user avatar
  • 141
4 votes
0 answers
267 views

Ubuntu 15.10 installed on MacBook won't shut down properly

I have installed Ubuntu 15.10 on my MacBook using rEFIt, and the problem is now it won't shut down properly. Every time it reaches the very last part where it's about to power off and then just hangs. ...
b_pcakes's user avatar
  • 153
4 votes
0 answers
1k views

liveCD Doesn't See Unallocated Space In My Hard Disk

I'm trying to dual boot Ubuntu 14.10 on my computer. I have Windows 7 installed and shrunk my main partition to leave a roughly 250 Gb gap (Unallocated). Partitioned as such: Recovery (20 GB) ...
Laurie's user avatar
  • 41
4 votes
2 answers
2k views

Can't install Windows as dual boot after Ubuntu

I've a quite complicated problem related to dual boot of Ubuntu and Windows 7. At first I had Windows 7 installed in my laptop but then when I tried to dual boot with Ubuntu 14.04, I somehow ...
Mohi's user avatar
  • 141
4 votes
1 answer
5k views

Boot Repair - 'Close all package managers...' Dual Boot Installation

After almost a week, I've just about managed to install Ubuntu 12.04.3 LTS alongside Windows 8 on a Dell XPS 14 Ultrabook. I have created a partition in Windows to store Ubuntu, rebooted from Windows ...
user2246804's user avatar
4 votes
0 answers
193 views

Ubuntu Dual boot breaks keyboard in WIndows 7

I have a HP ProBook 4530s Notebook PC. Main OS is WIndows 7 pro. I tried to install Ubuntu (from Windows with dual boot) several times and the result is the same. Ubuntu works fine but there is a ...
user124179's user avatar
4 votes
1 answer
2k views

No audio with newest model HP Spectre x360 (4101-dx)

I dual-booted Ubuntu 15.04 alongside Windows 10. There is a known issue with the audio in linux on this computer: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1441852 The older models that ...
jjcodes's user avatar
  • 41
4 votes
3 answers
10k views

MacBook install: no mountable file systems

I own a MacBook Pro running Mountain Lion. I would like to dual-boot my Mac OS with Ubuntu. When I download the file and try to open it, it reads "No mountable file systems". I have downloaded both ...
Garek Erskine's user avatar

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