Live CD/USB - run command on start
0
I would like to run some simple commands after system loads, but without editing SquashFS of Ubuntu.
Perfect way would be to have ISO written to USB and just add one simple script on this USB, something like RUN_AFTER_START.sh that would be run after the Ubuntu starts.
Is there any way to do it?
18.10
asked Jan 12 at 16:35
Mr. PMr. P
1314
|
show 4 more comments
0
I would like to run some simple commands after system loads, but without editing SquashFS of Ubuntu.
Perfect way would be to have ISO written to USB and just add one simple script on this USB, something like RUN_AFTER_START.sh that would be run after the Ubuntu starts.
Is there any way to do it?
18.10
asked Jan 12 at 16:35
Mr. PMr. P
1314
Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why is this question tagged16.10? Ubuntu 16.10 has been out of support for more than a year.
– kasperd
Jan 12 at 16:46
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17
|
show 4 more comments
0
0
0
I would like to run some simple commands after system loads, but without editing SquashFS of Ubuntu.
Perfect way would be to have ISO written to USB and just add one simple script on this USB, something like RUN_AFTER_START.sh that would be run after the Ubuntu starts.
Is there any way to do it?
18.10
asked Jan 12 at 16:35
Mr. PMr. P
1314
I would like to run some simple commands after system loads, but without editing SquashFS of Ubuntu.
Perfect way would be to have ISO written to USB and just add one simple script on this USB, something like RUN_AFTER_START.sh that would be run after the Ubuntu starts.
Is there any way to do it?
18.10
18.10
asked Jan 12 at 16:35
Mr. PMr. P
1314
asked Jan 12 at 16:35
Mr. PMr. P
1314
edited Jan 12 at 17:07
Mr. P
asked Jan 12 at 16:35
Mr. PMr. P
1314
asked Jan 12 at 16:35
Mr. PMr. P
1314
asked Jan 12 at 16:35
Mr. PMr. P
1314
1314
Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why is this question tagged16.10? Ubuntu 16.10 has been out of support for more than a year.
– kasperd
Jan 12 at 16:46
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17
|
show 4 more comments
Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why is this question tagged16.10? Ubuntu 16.10 has been out of support for more than a year.
– kasperd
Jan 12 at 16:46
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17
Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why is this question tagged
16.10? Ubuntu 16.10 has been out of support for more than a year.– kasperd
Jan 12 at 16:46
Why is this question tagged
16.10? Ubuntu 16.10 has been out of support for more than a year.– kasperd
Jan 12 at 16:46
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17
|
show 4 more comments
1 Answer
1
active
oldest
votes
1
You can make a persistent live drive. I suggest Ubuntu 18.04.1 LTS, using mkusb
If you run standard Ubuntu live, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)
sudo add-apt-repository universe # only for standard Ubuntu
sudo add-apt-repository ppa:mkusb/ppa # and press Enter
sudo apt-get update
sudo apt-get install mkusb mkusb-nox usb-pack-efi
Run mkusb-dus in order to create the persistent live drive
dus ubuntu-18.04.1-desktop-amd64.iso
Boot into the persistent live drive
Activate the repository 'universe' (good for many application programs, including
espeakthat I use for a demo example)
sudo add-apt-repository universe
sudo apt update
sudo apt install espeak
Edit
crontab: Select the simple editornano
crontab -e
and add the line (you need full path to the command)
@reboot /usr/bin/espeak 'I am ready now'
exit and save.
Reboot and you should hear the computer say 'I am ready now' just before you will see the desktop.
If you want to run a desktop application program I suggest that you use autostart, add a desktop file into the directory
/etc/xdg/autostart
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
@rebootruns quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.
– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details aboutautostart(even if it is not a desktop application program, or should I say a program with a graphical user interface).
– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,/dev/sdb4, is mounted on/cdrom, but withtoram/dev/shmis mounted on/cdromas you can see with the commanddf. But thecasper-rwpartition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).
– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot withtoram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.
– sudodus
yesterday
add a comment |
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1
You can make a persistent live drive. I suggest Ubuntu 18.04.1 LTS, using mkusb
If you run standard Ubuntu live, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)
sudo add-apt-repository universe # only for standard Ubuntu
sudo add-apt-repository ppa:mkusb/ppa # and press Enter
sudo apt-get update
sudo apt-get install mkusb mkusb-nox usb-pack-efi
Run mkusb-dus in order to create the persistent live drive
dus ubuntu-18.04.1-desktop-amd64.iso
Boot into the persistent live drive
Activate the repository 'universe' (good for many application programs, including
espeakthat I use for a demo example)
sudo add-apt-repository universe
sudo apt update
sudo apt install espeak
Edit
crontab: Select the simple editornano
crontab -e
and add the line (you need full path to the command)
@reboot /usr/bin/espeak 'I am ready now'
exit and save.
Reboot and you should hear the computer say 'I am ready now' just before you will see the desktop.
If you want to run a desktop application program I suggest that you use autostart, add a desktop file into the directory
/etc/xdg/autostart
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
@rebootruns quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.
– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details aboutautostart(even if it is not a desktop application program, or should I say a program with a graphical user interface).
– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,/dev/sdb4, is mounted on/cdrom, but withtoram/dev/shmis mounted on/cdromas you can see with the commanddf. But thecasper-rwpartition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).
– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot withtoram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.
– sudodus
yesterday
add a comment |
1
You can make a persistent live drive. I suggest Ubuntu 18.04.1 LTS, using mkusb
If you run standard Ubuntu live, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)
sudo add-apt-repository universe # only for standard Ubuntu
sudo add-apt-repository ppa:mkusb/ppa # and press Enter
sudo apt-get update
sudo apt-get install mkusb mkusb-nox usb-pack-efi
Run mkusb-dus in order to create the persistent live drive
dus ubuntu-18.04.1-desktop-amd64.iso
Boot into the persistent live drive
Activate the repository 'universe' (good for many application programs, including
espeakthat I use for a demo example)
sudo add-apt-repository universe
sudo apt update
sudo apt install espeak
Edit
crontab: Select the simple editornano
crontab -e
and add the line (you need full path to the command)
@reboot /usr/bin/espeak 'I am ready now'
exit and save.
Reboot and you should hear the computer say 'I am ready now' just before you will see the desktop.
If you want to run a desktop application program I suggest that you use autostart, add a desktop file into the directory
/etc/xdg/autostart
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
@rebootruns quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.
– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details aboutautostart(even if it is not a desktop application program, or should I say a program with a graphical user interface).
– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,/dev/sdb4, is mounted on/cdrom, but withtoram/dev/shmis mounted on/cdromas you can see with the commanddf. But thecasper-rwpartition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).
– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot withtoram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.
– sudodus
yesterday
add a comment |
1
1
1
You can make a persistent live drive. I suggest Ubuntu 18.04.1 LTS, using mkusb
If you run standard Ubuntu live, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)
sudo add-apt-repository universe # only for standard Ubuntu
sudo add-apt-repository ppa:mkusb/ppa # and press Enter
sudo apt-get update
sudo apt-get install mkusb mkusb-nox usb-pack-efi
Run mkusb-dus in order to create the persistent live drive
dus ubuntu-18.04.1-desktop-amd64.iso
Boot into the persistent live drive
Activate the repository 'universe' (good for many application programs, including
espeakthat I use for a demo example)
sudo add-apt-repository universe
sudo apt update
sudo apt install espeak
Edit
crontab: Select the simple editornano
crontab -e
and add the line (you need full path to the command)
@reboot /usr/bin/espeak 'I am ready now'
exit and save.
Reboot and you should hear the computer say 'I am ready now' just before you will see the desktop.
If you want to run a desktop application program I suggest that you use autostart, add a desktop file into the directory
/etc/xdg/autostart
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
You can make a persistent live drive. I suggest Ubuntu 18.04.1 LTS, using mkusb
If you run standard Ubuntu live, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)
sudo add-apt-repository universe # only for standard Ubuntu
sudo add-apt-repository ppa:mkusb/ppa # and press Enter
sudo apt-get update
sudo apt-get install mkusb mkusb-nox usb-pack-efi
Run mkusb-dus in order to create the persistent live drive
dus ubuntu-18.04.1-desktop-amd64.iso
Boot into the persistent live drive
Activate the repository 'universe' (good for many application programs, including
espeakthat I use for a demo example)
sudo add-apt-repository universe
sudo apt update
sudo apt install espeak
Edit
crontab: Select the simple editornano
crontab -e
and add the line (you need full path to the command)
@reboot /usr/bin/espeak 'I am ready now'
exit and save.
Reboot and you should hear the computer say 'I am ready now' just before you will see the desktop.
If you want to run a desktop application program I suggest that you use autostart, add a desktop file into the directory
/etc/xdg/autostart
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
edited Jan 12 at 19:35
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
answered Jan 12 at 19:29
sudodussudodus
23.3k32874
23.3k32874
@rebootruns quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.
– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details aboutautostart(even if it is not a desktop application program, or should I say a program with a graphical user interface).
– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,/dev/sdb4, is mounted on/cdrom, but withtoram/dev/shmis mounted on/cdromas you can see with the commanddf. But thecasper-rwpartition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).
– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot withtoram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.
– sudodus
yesterday
add a comment |
@rebootruns quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.
– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details aboutautostart(even if it is not a desktop application program, or should I say a program with a graphical user interface).
– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,/dev/sdb4, is mounted on/cdrom, but withtoram/dev/shmis mounted on/cdromas you can see with the commanddf. But thecasper-rwpartition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).
– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot withtoram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.
– sudodus
yesterday
@reboot runs quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.– kasperd
Jan 12 at 20:02
@reboot runs quite early during boot. Depending on what command you want to run it's quite possible the services it depends on haven't started yet.– kasperd
Jan 12 at 20:02
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details about
autostart (even if it is not a desktop application program, or should I say a program with a graphical user interface).– sudodus
Jan 12 at 21:30
@kasperd, you are right. And if that is the case for our OP, we may have to work out more details about
autostart (even if it is not a desktop application program, or should I say a program with a graphical user interface).– sudodus
Jan 12 at 21:30
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
Thanks guys for help. I have used the easiest (i think :) ) approach - persistence. I got, however, multiple problems with mkusb but it was probably with wrong selection of items (GPT, MSDOS, uefi and so on...). Anyway, in the end I managed to get it working. Currently i have 1 question: With 'persistent' and 'toram' options in grub, is the persistence overlay loaded to RAM as well or only linux image is loaded to ram and the rest is on usb?
– Mr. P
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,
/dev/sdb4, is mounted on /cdrom, but with toram /dev/shm is mounted on /cdrom as you can see with the command df. But the casper-rw partition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).– sudodus
yesterday
When running (and when there is enough RAM), things that are used are in RAM. ToRAM makes the squash file system load into RAM at boot (instead of loading things, when needed). Normally the partition with the image of the iso file,
/dev/sdb4, is mounted on /cdrom, but with toram /dev/shm is mounted on /cdrom as you can see with the command df. But the casper-rw partition is still mounted, this is where things are stored (maybe not directly, it is probably buffered in RAM, but you cannot disconnect the persistent live USB drive).– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot with
toram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.– sudodus
yesterday
On the other hand, in a live-only system (booted without persistence), when you boot with
toram, the running system is completely detached from the USB drive, so after unmounting other (non-system) partitions you can unplug it.– sudodus
yesterday
add a comment |
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Why do you not want to edit the SquashFS? What's your reason for using a live CD rather than installing Ubuntu? What's your reason for using a CD rather than a USB media? Is it a usable option for you to use GRUB and modify the GRUB configuration?
– kasperd
Jan 12 at 16:44
Why is this question tagged
16.10? Ubuntu 16.10 has been out of support for more than a year.– kasperd
Jan 12 at 16:46
I meant 18.10 - fixed.
– Mr. P
Jan 12 at 16:59
@kasperd, I meant LiveUsb - fixed. About why not messing around SquashFS - it is pointless to extract squashfs, change one bit and compress it just to make one simple change. LiveUSB and not installation - i just cannot install ubuntu. I can only use it as LiveUSB. About GRUB - I am not sure if grub will allow me to use Ubuntu apps like apt etc?
– Mr. P
Jan 12 at 17:07
Why can't you install Ubuntu? It is possible to install Ubuntu on a USB media and run it from there. It is even possible to boot the live system from a USB media and then install Ubuntu on the media you just booted from. As far as I recall the live USB medias do use GRUB as the boot loader, so you could edit the GRUB menu to change how it boots.
– kasperd
Jan 12 at 17:17