[SOLVED] Dual booting with Windows and Pop OS

[Hbayram]

Sorry mate.

 

[f33dm3bits]

Hi there,

Thanks for responding.

I gave done:
Set prefix=(hd0,gpt3)/boot/grub
Set foot=(hd0,gpt3)
Insmod Linuxinsmod normalnormalas before, this gets the grub menu up.

Next, in Linux I do:

Sudo update-grub

After reboot again it goes to grub> command prompt

After you enter this do you have to enter a password to boot?

 

[Hbayram]

No password. It displays a blue grub menu any you can boot into either system with no problem. Upon reboot the menu is gone and again you are in grub> prompt.

 

[f33dm3bits]

Once you are booted into PopOS, can you share the output of the following?

lsblk
cat /etc/fstab

 

[Hbayram]

Thank you.

 

[f33dm3bits]

Can you please share it as text and with code tags, also can you share the output of the following as well.

sudo cat /etc/crypttab
efibootmgr

 

[Hbayram]

Sure. This is the first one:

huso@huso-pop-os:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 81.8M 1 loop /snap/bluemail/100
loop1 7:1 0 81.8M 1 loop /snap/bluemail/101
loop2 7:2 0 55.4M 1 loop /snap/core18/2074
loop3 7:3 0 337.5M 1 loop /snap/wine-platform-runtime/232
loop4 7:4 0 303.1M 1 loop /snap/wine-platform-5-stable/16
loop5 7:5 0 99.4M 1 loop /snap/core/11420
loop6 7:6 0 219M 1 loop /snap/gnome-3-34-1804/72
loop7 7:7 0 164.8M 1 loop /snap/gnome-3-28-1804/161
loop8 7:8 0 85M 1 loop /snap/netflix-viewer/18
loop9 7:9 0 337.4M 1 loop /snap/wine-platform-runtime/233
loop10 7:10 0 55.4M 1 loop /snap/core18/2128
loop11 7:11 0 65.1M 1 loop /snap/gtk-common-themes/1515
mmcblk0 179:0 0 183.3G 0 disk
└─mmcblk0p1 179:1 0 183.3G 0 part /media/huso/200Gb_MSD
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:1 0 498M 0 part /boot/efi
├─nvme0n1p2 259:2 0 4G 0 part /recovery
├─nvme0n1p3 259:3 0 393.9G 0 part /run/timeshift/backup
├─nvme0n1p4 259:4 0 16M 0 part
├─nvme0n1p5 259:5 0 74.5G 0 part
└─nvme0n1p6 259:6 0 4G 0 part
└─cryptswap 253:0 0 4G 0 crypt [SWAP]
nvme1n1 259:7 0 27.3G 0 disk
huso@huso-pop-os:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
#PARTUUID=5142cec2-d485-4563-8c75-a5cf4bbd3d5e /boot/efi vfat umask=0077 0 0
PARTUUID=9a9854ec-afad-41c6-aa7e-cb438532e499 /recovery vfat umask=0077 0 0
UUID=3fe5911f-18d3-456f-9f71-6a27e3eb8b62 / ext4 noatime,errors=remount-ro 0 0
/dev/mapper/cryptswap none swap defaults 0 0
#UUID=5100-A6CA /boot/efi vfat defaults 0 1
#UUID=5100-A6CA /boot/efi vfat defaults 0 1
#UUID=5100-A6CA /boot/efi vfat defaults 0 1
#UUID=5100-A6CA /boot/efi vfat defaults 0 1
UUID=5100-A6CA /boot/efi vfat defaults 0 1

 

[Hbayram]

and the second:

huso@huso-pop-os:~$ sudo cat /etc/crypttab
[sudo] password for huso:
cryptswap UUID=df7841a6-87e8-4f95-bafc-ffe587b3e5b9 /dev/urandom swap,plain,offset=1024,cipher=aes-xts-plain64,size=512
huso@huso-pop-os:~$ efibootmgr
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0002,0001,0000,0003
Boot0000* Pop!_OS 21.04
Boot0001* UEFI OS
Boot0002* pop
Boot0003* Windows Boot Manager

 

[f33dm3bits]

I'm getting the idea that grub doesn't know which partition your root partition is on. I did install PopOS in a vm with uefi boot and by default it installs systemd-boot. Did you install grub yourself or was grub installed during the installation process? On which disk and partition do you have Windows installed?

 

[Hbayram]

No, grub does not come with pop os out of the box, I installed it myself.

İt was a nightmare on my Asus UX325JA laptop. I reduced the size of the windows partition to make room for Linux. Upon booting to the installer, it would not see the free space. I then unencrypted windows which was using bitlocker. I also disabled secure boot in the bios and changed to uefi. Again Linux could not see the free space.

So, after days without luck I wiped the machine fully and installed pop as the only os. İt then installed fine. I then made free space for Windows and successfully installed it too.

I then followed instructions to setup grub and this is where I am now. İf i press ESC when booting the matchine I can boot into windows or Linux no problem. However, if i just switch it on and leave it alone it always goes back to grub>

İf i type in the grub commands in my initial post the grub menu does appear and both os boot up. But, if i rebook I am back on the grub> prompt!

 

[f33dm3bits]

I thought so, thanks for verifying that. On which disk and partition is your Windows installation located at?

mmcblk0 179:0 0 183.3G 0 disk
└─mmcblk0p1 179:1 0 183.3G 0 part /media/huso/200Gb_MSD
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:1 0 498M 0 part /boot/efi
├─nvme0n1p2 259:2 0 4G 0 part /recovery
├─nvme0n1p3 259:3 0 393.9G 0 part /run/timeshift/backup
├─nvme0n1p4 259:4 0 16M 0 part
├─nvme0n1p5 259:5 0 74.5G 0 part
└─nvme0n1p6 259:6 0 4G 0 part
└─cryptswap 253:0 0 4G 0 crypt [SWAP]
nvme1n1 259:7 0 27.3G 0 disk

Is your Windows installation on mmcblk0 and you PopOS installation on nvme0n1?

 

[f33dm3bits]

Why did you actually install grub if systemd-boot was working?

 

[Hbayram]

Thank you, no, windows is on p5, Linux is on p3.

mmcblk0p1 is just a microsd card.

 

[Hbayram]

İf i left it as it was, it would go straight to windows without any option to boot to pop.

 

[f33dm3bits]

Did you install Windows or PopOS first?

 

[Hbayram]

Due to the problem I had adding pop to windows, I wiped it and first installed pop and then windows.

 

[f33dm3bits]

Due to the problem I had adding pop to windows, I wiped it and first installed pop and then windows.

Usually it's better to first install Windows and then Linux. I'll try to see if I create a dual boot system with PopOS and Windows with grub as bootloader on a virtual system.

 

[f33dm3bits]

And at what point did you install grub, after you had install both PopOS and Windows?

 

[Hbayram]

Thanks mate. I really appreciate your help. I tried to do it that way, but Linux refused to see my drive as available and usable.

 

[Hbayram]

Yes. First Linux, then windows and finally grub. İf you do sudo update-grub, it sees every partition. 3 for Linux and 3 for Windows.