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**Qqmike** · Jul 26, 2015, 05:19 PM

That is not a problem -- it's fine. Your (relatively new) computer is booting in the newer UEFI mode (versus the older "BIOS" mode), and you have Secure Boot turned off (which is OK -- see SteveRiley's post about this somewhere around here @kubuntuforums). Thus, "Booting in insecure mode" is simply reporting to you that your boot-up is without Secure Boot turned on. I'll try to dig up Steve's post for you.

**Qqmike** · Jul 26, 2015, 05:26 PM

https://www.kubuntuforums.net/showth...l=1#post342624

https://www.kubuntuforums.net/showth...l=1#post317265

https://www.kubuntuforums.net/showth...l=1#post315393

https://www.kubuntuforums.net/showth...l=1#post303502

**Qqmike** · Jul 26, 2015, 05:28 PM

"Secure Boot" is mainly for Windows OSs -- even then, many experts ("most" experts that I read) will tell you to turn it off; and, if tuned on, it can cause other issues. (I consider Steve Riley to be a security expert, knowledgeable about Linux and Windows.)

**Bumpalot** · Jul 26, 2015, 07:58 PM

How can I find out if I am REALLY booting with??

**Qqmike** · Jul 26, 2015, 08:03 PM

Open Konsole, issue the command,

sudo efibootmgr

If efibootmgr is not installed, use Muon to install it (or sudo apt-get install efibootmgr).

Mine:

Code:

sudo efibootmgr
[sudo] password for mike: 
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0003,0001,0004,000A,0005,0006,0002,000B,000C,0007,0008,0009
Boot0000* ubuntu
Boot0001* debian
Boot0002* grub_sda5K1504
Boot0003* rEFInd Boot Manager
Boot0004* Mint_2
Boot0005* Hard Drive 
Boot0006* CD/DVD Drive 
Boot0007* UEFI:CD/DVD Drive
Boot0008* UEFI:Removable Device
Boot0009* UEFI:Network Device
Boot000A* Mint_1
Boot000B* ubuntu
Boot000C* ubuntu

You should see about the same kind of report with BootOrder.

**Qqmike** · Jul 26, 2015, 08:12 PM

More indicators you are booting in UEFI mode:

Identifying if an Ubuntu has been installed in EFI mode

An Ubuntu installed in EFI mode can be detected the following way:

> its /etc/fstab file contains an EFI partition (mount point: /boot/efi)
> it uses the grub-efi bootloader (not grub-pc) <-- see below

https://www.kubuntuforums.net/showth...l=1#post346604

Check /usr/lib/grub -- do you see x86_64.efi[and maybe also -signed]?

Install gdisk, then:

Code:

 [B]sudo gdisk -l /dev/sda[/B]
 GPT fdisk (gdisk) version 0.8.8
  
 Partition table scan:
   MBR: protective
   BSD: not present
   APM: not present
   GPT: present
   Found valid GPT with protective MBR; using GPT.
 Disk /dev/sda: 976773168 sectors, 465.8 GiB
 Logical sector size: 512 bytes
 Disk identifier (GUID): D3B766B4-D998-4351-8F06-13BC87F55BDE
 Partition table holds up to 128 entries
 First usable sector is 34, last usable sector is 976773134
 Partitions will be aligned on 2048-sector boundaries
 Total free space is 111493101 sectors (53.2 GiB)
  
 Number  Start (sector)    End (sector)  Size       Code  Name
    1            2048         1026047   500.0 MiB   [COLOR=#ff3333][B]EF00[/B][/COLOR]   [COLOR=#ff0000]<-- you should see this EF00[/COLOR]
    2         1026048        62466047   29.3 GiB    8300   
    3        62466048       267266047   97.7 GiB    8300   
    4       267266048       300034047   15.6 GiB    8200   
    5       300034048       361474047   29.3 GiB    8300   
    6       361474048       566274047   97.7 GiB    8300   
    7       566274048       567298047   500.0 MiB   EF00   
    8       567298048       669698047   48.8 GiB    8300   
    9       669698048       772098047   48.8 GiB    8300   
   10       772098048       773122047   500.0 MiB   EF00   
   11       773122048       824322047   24.4 GiB    8300   
   12       824322048       865282047   19.5 GiB    8300

UEFI for Kubuntu -- simplified, and dual-booting tips

https://www.kubuntuforums.net/showth...l=1#post373198

EDIT, added:
You can open /boot/efi and see your EFI setup: /EFI/ubuntu and inside that folder, see some files like grubx64.efi, grub.cfg, etc.

**Qqmike** · Jul 26, 2015, 08:55 PM

Had some time on my hands and so typed up a draft of a checklist of things to check to see if you've installed Kubuntu in UEFI mode:

Is your Kubuntu installed in UEFI mode?

>> Open Konsole, issue the command,
sudo efibootmgr
You should see BootOrder: xxxx,xxxy,xxxz, etc., and a list of Bootxxxx's.
If efibootmgr is not installed, use Muon to install it (or sudo apt-get install efibootmgr).

>> Your /etc/fstab file should contain an EFI System Partition (mount point: /boot/efi, type EF00), maybe like this:
# /boot/efi was on /dev/sda1 during installation
UUID=74D7-02F2 /boot/efi vfat defaults 0 1

>> (Again) You should have an ESP partition. (EFI System Partition, type EF00).
Check it using gdisk:

Code:

 [B]sudo gdisk -l [/B]/dev/sda 

 Number  Start (sector)    End (sector)  Size   
      n            x         y   100-500.0 MiB  [COLOR=#ff3333][B]EF00[/B][/COLOR]   [COLOR=#ff0000]<--you should see this EF00[/COLOR]

(You might have to install gdisk using Muon Package Manager, or sudo apt-get install gdisk.)

>> Open /boot/efi (which is the mount point for the ESP) and see your (U)EFI setup: /EFI/ubuntu and inside that folder, see some files like grubx64.efi, grub.cfg, etc.

>> Your Kubuntu should use the grub-efi bootloader (not grub-pc)
Check /usr/lib/grub -- do you see x86_64.efi[and maybe also -signed]?

- - - - - - - - - -

To install the Kubuntu OS in UEFI mode
--> Must be 64-bit Kubuntu OS for UEFI.
--> You must boot your Kubuntu installer DVD/USB in UEFI mode!

With the DVD/USB installer, reboot the PC, enter UEFI(-BIOS) by pressing the correct key for your computer.
Find the boot menu or boot override menu where the bootable devices will be listed.
Choose the one that corresponds to the Kubuntu UEFI choice.
Look for UEFI /(FAT) or some reference to UEFI.
Example: My Live Kubuntu DVD installer showed up twice in UEFI BIOS (under Boot Override) as a "normal" DVD writer, and also as:
UEFI (FAT) TSSTcorp CDDVDW SH-224DB (1028 MB) (= my Samsung DVD player).
Select that option from the boot override menu.

- - - - - - - - - -

GPT, UEFI -- Study Guide
https://www.kubuntuforums.net/showth...l=1#post346604

UEFI for Kubuntu--simplified. And ... some dual-booting tips for Kubuntu
https://www.kubuntuforums.net/showth...l=1#post373198

**Bumpalot** · Jul 27, 2015, 10:58 AM

WOW! I seemed to have opened a "good can of worms"!
I was looking up on the subject of efi after Qqmike's post, & was amazed to discover it was already on my system.
Here is what I discovered:

Code:

bumpy@Peterputer:~$ sudo efibootmgr
[sudo] password for bumpy: 
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0006,0002,0003,0005,0001,0004,0007
Boot0000* ubuntu
Boot0001* UEFI:CD/DVD Drive
Boot0002* Hard Drive 
Boot0003* CD/DVD Drive 
Boot0004* UEFI:Removable Device
Boot0005* Removable Drive 
Boot0006* ubuntu
Boot0007* UEFI:Network Device
bumpy@Peterputer:~$ sudo gdisk -l /dev/sda 
GPT fdisk (gdisk) version 0.8.8

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): DE4FB145-976A-4978-BD40-3E454834A49B
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 2048-sector boundaries
Total free space is 4077 sectors (2.0 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1050623   512.0 MiB   8300  
   2         1050624       962215935   458.3 GiB   8300  
   3       962215936       976771071   6.9 GiB     8200

Code:

bumpy@Peterputer:~$ sudo apt-get install gdisk
Reading package lists... Done
Building dependency tree       
Reading state information... Done
gdisk is already the newest version.

bumpy@Peterputer:/usr/lib/grub$ dir
grub-mkconfig_lib x86_64-efi x86_64-efi-signed

This is a bit confusing to me, so will ask this simple question: Am I booting up in efi?

**Qqmike** · Jul 27, 2015, 11:09 AM

Am I booting up in efi?

Yes, looks like it. You have a new computer, so it should be running in UEFI with a GPT (a newer type of partition table). In many ways, the newer way with UEFI is easier, cleaner, more accessible to the user than the older BIOS+MBR way.

To get more info about what is booting up, you can run
sudo efibootmgr -v
(with the -v option)

You have just one HDD, right?

What about the other things in the checklist, Post #8. I'm just curious about the first partition sda1.

>> Your /etc/fstab file should contain an EFI System Partition (mount point: /boot/efi, type EF00), maybe like this:
# /boot/efi was on /dev/sda1 during installation
UUID=74D7-02F2 /boot/efi vfat defaults 0 1

>> Open /boot/efi (which is the mount point for the ESP) and see your (U)EFI setup: /EFI/ubuntu and inside that folder, see some files like grubx64.efi, grub.cfg, etc.

>> Your Kubuntu should use the grub-efi bootloader (not grub-pc)
Check /usr/lib/grub -- do you see x86_64.efi[and maybe also -signed]?

**Bumpalot** · Jul 27, 2015, 12:17 PM

Code:

bumpy@Peterputer:~$ sudo efibootmgr -v
[sudo] password for bumpy: 
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0000,0006,0002,0003,0005,0001,0004,0007
Boot0000* ubuntu        HD(1,800,100000,add64ac5-2447-4731-8086-ae2a3f326378)File(\EFI\ubuntu\shimx64.efi)
Boot0001* UEFI:CD/DVD Drive     BIOS(81,0,00)
Boot0002* Hard Drive    BIOS(2,0,00)AMGOAMNO........o.W.D.C. .W.D.5.0.0.3.A.B.Y.X.-.0.1.W.E.R.A.1....................A...........................>..Gd-.;.A..MQ..L. . . . .W. .-.D.M.W.Y.A.3.P.1.3.7.9.3.8......AMBOAMNO........s.W.D. .E.x.t. .H.D.D. .1.0.2.1. .2.0.0.2....................A.......................F..Gd-.;.A..MQ..L.5.7.4.D.4.1.5.A.4.1.3.0.3.4.3.9.3.5.3.2.3.0.3.3......AMBO
Boot0003* CD/DVD Drive  BIOS(3,0,00)AMGOAMNO........o.H.P. .D.V.D. .W.r.i.t.e.r. .1.2.6.0.v....................A...........................>..Gd-.;.A..MQ..L.5.3.4.2.9.4. .5.0.2.2.6.4.4.0.5.1.2.6.8......AMBO
Boot0004* UEFI:Removable Device BIOS(82,0,00)
Boot0005* Removable Drive       BIOS(1,0,00)AMGOAMNO........W.H.P. .O.f.f.i.c.e.j.e.t. .P.r.o. .8.5.1...0.0....................A.......................*..Gd-.;.A..MQ..L.C.N.0.2.8.6.R.1.M.R......AMBO
Boot0006* ubuntu        HD(1,800,100000,add64ac5-2447-4731-8086-ae2a3f326378)File(\EFI\Ubuntu\grubx64.efi)
Boot0007* UEFI:Network Device   BIOS(83,0,00)

Code:

bumpy@Peterputer:/etc$ cat 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>
# / was on /dev/sda2 during installation
UUID=ade5baf1-7015-47f2-988a-c06e07bc2a66 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=A388-98E9  /boot/efi       vfat    defaults        0       1
# swap was on /dev/sda3 during installation
UUID=1f5388ca-884b-4458-a6b8-a52033482065 none            swap    sw              0       0

Code:

bumpy@Peterputer:/boot/efi/EFI/ubuntu$ dir
grub.cfg  grubx64.efi  MokManager.efi  shimx64.efi
bumpy@Peterputer:/boot/efi/EFI/ubuntu$ dir
grub.cfg  grubx64.efi  MokManager.efi  shimx64.efi
bumpy@Peterputer:/boot/efi/EFI/ubuntu$

bumpy@Peterputer:/usr/lib/grub$ dir
grub-mkconfig_lib  x86_64-efi  x86_64-efi-signed

**Qqmike** · Jul 27, 2015, 12:46 PM

Yep, looks good -- it's all there, as it should be for UEFI booting (and you also do have a GPT -- see your gdisk output, so that's a good thing). Your ESP is sda1, mounted at /boot/efi--that is "standard." You can also open Dolphin, click on root (on the left), then click boot, then efi, then EFI and see all your GRUB2-EFI boot files (that you listed in your output above at Konsole). The brave new world of UEFI ...

The only other thing I'll mention is rEFInd. It's a boot manager (as my how-to's indicate, with links). It can fit in here alongside GRUB. If you ever have a problem booting into your OS, rEFInd can get you in (almost always). And you can very easily also put it on a CD. If you do install it, it will be first on the BootOrder, and you can easily change that using efibootmgr (see man efibootmgr); right now, your Kubuntu is set first in BootOrder (that's the "ubuntu" entry -- K(U)buntu OSs go in the "ubuntu" folder). rEFInd is entirely optional. I use it because (1) it's fun, (2) it helps me learn more about this UEFI thing, and (3) I do a lot of booting experiments and it comes in handy when I get in a pickle.

Install rEFInd in your Kubuntu
https://www.kubuntuforums.net/showth...l=1#post372221

rEFInd on a CD
https://www.kubuntuforums.net/showth...l=1#post376838

Looks good. Good job.

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