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Questions tagged [bootloader]

For questions pertaining to bootladers for the Raspberry Pi, their installation, configuration and troubleshooting.

1
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1answer
96 views

raspberrypi-bootloader error when apt installing/upgrading

I've never had this complex of an apt issue. I was trying to install nodejs when I came upon this unmet dependency. Updating, upgrading, and fix-broken install do not solve anything. I need to take a ...
1
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0answers
18 views

Read pin (power led) from port expander on ic2-0 at config.txt

In config.txt you can have conditional booting based on the GPIO pin level, e.g. the gpio4=1 line. Is it also possible to access the pin on the GPIO port extender at i2c-0, or is this something ...
0
votes
1answer
92 views

install PINN without deleting OSes on SD-card

I have a RPi 3B+ on which I installed two OSes via PINN. That worked fine until now. Recently I tried to configure my bootloader so I am able to chose the correct OS to boot from my TVs remote-...
0
votes
1answer
34 views

Fallback kernel.img possible in config.txt

I have a raspberry with a customized OS. The image it should load is described in the config.txt on the boot partition. The image is called zImage and the line in the config.txt is: kernel=zImage I ...
0
votes
0answers
65 views

CM3: Set boot mode by OTP bits

I have a raspberry compute module 3 an I am trying to understand the boot flow and how I can set the OTP bits so that it ONLY boots from the internal memory. The raspberry documentation talks about ...
1
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3answers
50 views

RPi 3 kernel without VFAT support

I am building a very compact Linux kernel for my RPi 3. I have stripped a lot of features from the kernel. The current kernel size is around 4 MB. Currently I only have ext4 and vfat FS enabled. I ...
5
votes
1answer
276 views

Installing Linux on Raspberry pi 3 b+

I am currently going through tutorials explaining how to install linux kernel on the raspberry pi, most of the tutorial (an example) recommend the use of an SD card and to install the kernel on it. so ...
1
vote
1answer
369 views

Speeding up boot process : RBP 3B+ and UBoot

I am trying to setup a system in the RBP 3B+ using UBoot as bootloader. I am trying to get it to boot the fastest I can (at the moment, I have a Class 10 SD card) and I am getting around 1.4s from ...
0
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0answers
80 views

How can I create a bootable disk/image for raspberry pi?

I want to to create a (kind of) preset image for raspberry that will include some application set up that I'm working on a project of mine. So, let's start with a simple problem so that from this ...
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votes
1answer
71 views

How Raspberry Pi booting up? [duplicate]

I want to know, how Raspberry Pi booting up. Of course, I can google it, but I can`t found this information in official documentation [ https://www.raspberrypi.org/documentation ]. I am searching for ...
1
vote
1answer
450 views

NOOBS bootloader doesn't use composite video

I created a dual-boot setup on my Pi 1B today and have it hooked up to an old NTSC CRT TV. When I first installed the OSes, I pressed "4" on my keyboard to get composite video out, and NOOBS prompted ...
0
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0answers
769 views

PI Zero will not boot, Pi 3 will same sd card

I have a Pi 3 and a Pi Zero. I have a sandisk sd card a no name sd card. My Pi 3 will boot with both sd cards. The Pi zero will only boot with the sandisk. I am using the same latest image on both ...
0
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2answers
101 views

Where can i download SETTINGS drive content?

I accidentally deleted the content of /media/pi/SETTINGS Anyone know if it's a problem ? Or could share me his Settings drive content? I'm using Raspbian with NOOBS
1
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0answers
108 views

Boot Into OS Depending on physical switch position

Does anyone know of a boot-loader existing, or if NOOBS can interpret the position of a switch/read GPIO pins at boot then pick the partition to boot into based on what it reads? E.g. Switch in ...
1
vote
1answer
92 views

Start my software before the user can even see that Raspbian is running in the background?

Say I have written an app. I would now like the raspberry pi to start up and go straight into that app, give the user no options to do anything on the raspberry pi's OS etc. or break out of it. I don'...
0
votes
1answer
126 views

Pi won't boot after i installed upstart

So, here is my problem: I installed upstart on my raspbian (jessie) yesterday. After i tried to reboot the system, the boot loader didn't load any further. The problem is, that the sd card is in my ...
3
votes
3answers
7k views

RPi3 + buildroot + U-boot

What I want to do: I am working on a project where we want to update our RPi on boot. We are working with buildroot successfully for almost one year. Now I am trying to get it work with U-boot. What ...
0
votes
1answer
6k views

Issues with root=PARTUUID= in cmdline.txt at boot

I'm having some trouble understanding which drive identifiers are available at different stages of system boot. I'm running a Pi 2B with a btrfs root mounted on an external USB SSD. I'd like to ...
0
votes
1answer
138 views

Patch a RPI image to get a root shell

I'm trying to reverse engineer an appliance based on RPI2, and I would like to get a root shell on the system. After dumping the SD I noticed that there's no rootfs partition (it exists but it's ...
3
votes
1answer
335 views

How does firmware find bootloader on SD card?

As far as I know the first stage bootloader tries to load bootcode.bin from SD card. How does it find it on SD card? Should it be placed in particular sectors or can initial bootloader work with ...
2
votes
2answers
371 views

Why does Raspberry PI use GPU for loading bootloaders and configuration

There is a great explanation of the boot process - What is the boot sequence? But I can't understand why GPU is responsible for doing all that work. Could someone explain this decision? I can't ...
1
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0answers
149 views

Embedded devices boot process vs PC

I am trying to dive deeper into the boot process and understand how everything works. I have understanding but I am not sure I am right. I have already found a lot of great examples like that What ...
4
votes
2answers
9k views

Boot Zero W from USB device

The older Raspberry Pi's (Pi 1, Pi 2 and Pi Zero) couldn't boot from a USB-device, but the Raspberry Pi 3 has support for it. The Pi and Pi 2 have semi-support for it (using an SD-card with a single ...
4
votes
1answer
604 views

Is network boot possible on Raspberry Pi?

I have several RPI and want them to have a common OS shared thanks to a hotpot generated from a central computer, hence my question: Is network boot possible on Rasperry PI?
0
votes
1answer
53 views

Pi 3 Model B doesn't display anything

After setting up Jesse 09/23/16 on 8GB SD Card, the Pi booted fine and I played around with the X-Windows environment. Upon "Shutdown", and power recycle, there is no HDMI display. I do get the ...
2
votes
0answers
1k views

Booting with Grub on U-Boot

I have some specific needs for a bootloader for the Raspberry Pi. I am using a Model 2 B. So the short version is I will have devices scattered throughout the country for various purposes, and these ...
1
vote
1answer
551 views

Whats the name of the package for grub2

I need to run update-grub because I've compiled a new kernel but the update-grub command is not installed. What is the name of the package for the Raspberry Pi that provides this program.
1
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1answer
3k views

How i can boot Raspbian from USB? [duplicate]

I got hands on my Raspberry Pi 2 Model B in just few months and when i used it soo much the SD card got bent in here and it want to snap apart but when i removed it i was trying to rebend it back with ...
2
votes
3answers
2k views

How can I install the bootloader manually?

Rather than writing stock image to an SD card, sometimes I need to create another physical disk from my backups. My procedure is as follows: detect which device to format create appropriate ...
3
votes
2answers
3k views

Dual boot for the rpi

Is it possible to have dual boot partitions on usb stick switchable by berryboot loader via vnc. I need to have a backup boot partition with raspbian Bootable on it. So that if my primary partition ...
7
votes
5answers
3k views

Raspberry pi 3 - why the FAT partition?

I am just getting started with a Raspberry pi 3, with wifi. I'm building with one of the Ubuntu images I downloaded. After I wrote the image to the SD card, I saw the first partition was FAT32. Why is ...
0
votes
1answer
4k views

Booting a Raspberry Pi from an Encrypted SD Card

Is there a way to completely encrypt the SD card for the Raspberry Pi? Meaning that only with a password the SD card is accessible and bootable. I am looking for a solution similar to TrueCrypt or ...
6
votes
5answers
7k views

Raspberry Pi 2 support PXE booting or network booting without an SD card

I would like to try to boot the Raspberry Pi 2 without the need of an SD card, anyone know how I may go about do this, if it is even possible?
5
votes
1answer
527 views

How do I setup a Raspberry Pi 2 Model B to do a network install via TFTP?

I have a TFTP server, and I want to install any new Raspberry Pis on my network to use the TFTP server to install the OS. How do I got about doing this, I checked the Documentation on the official ...
1
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0answers
265 views

Initrd and btrfs raid at rapsberry pi 2

I trying to setup a Raid 1 using btrfs. Generally ArchLinuxARM supports single device btrfs without tweaking anything. But adding another device and rebooing results in a boot failure "Device not ...
2
votes
1answer
76 views

Time between power on and kernel starting

On my RPi2, I have measured exactly 5 seconds between : "I plug the power cord" and "Kernel starting time 0.00s", as displayed on the top left here: Is there a way to optimize this before-...
1
vote
2answers
262 views

Boot from usb if available

I have my raspbian OS located on a 3TB external harddrive only some bootmanager stuff left on the SD Card. (if i remember right i followed this guide) I want it to boot from the sd card ONLY if there ...
0
votes
1answer
172 views

Raspberry boot files

I'm trying to boot the RasPi using specific files. I was following a tutorial and I had to compile some files using GCC. The problem is that this process doesn't provide a 'img' file and I don't know ...
2
votes
1answer
187 views

Is there a power-safe way to upgrade the Linux kernel?

Is there a method of self-upgrading the Linux kernel on a Raspberry Pi which is safe against power outages and filesystem corruption. When running a Raspberry Pi remotely, it's important to be able ...
2
votes
0answers
1k views

Install a third-party OS image using NOOBS?

I have a Raspberry Pi with Raspbian and RaspBMC installed using NOOBS, but I was wondering if it is possible to install a third-party OS, that is not included with NOOBS, using NOOBS? I was ...
1
vote
1answer
1k views

How to choose system to boot up without monitor?

I have Raspberry with Raspbian and RaspBMC (installed from NOOBS). I use Raspbian without monitor, keyboard and mouse at my workshop. SSH, apache and samba is all I need to interact with PI there. ...
0
votes
3answers
3k views

My pi with berryboot with vnc enabled wont work

In Berryboot's cmdline.txt, I added vncinstall ipv4=192.168.2.16/255.255.255.0/192.168.2.1 and my ipconfig for my xp computer is: Windows IP Configuration Ethernet adapter Wireless Network ...
0
votes
1answer
3k views

raspberry pi won't boot after some bootcode.bin update

After performing a system update a few days ago, my raspberry pi does not boot up anymore. The last thing I remember was a apt-get update apt-get upgrade with an update of bootcode.bin. ...