The kernel-parameters tag has no usage guidance.
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How to prevent access to HDD during Live-CD operation?
I want to safely disable the harddrive / harddisc (HDD) of my computer with boot parameters.
I can not physically unplug it.
BIOS / UEFI does not provide me an option to disable it.
Can I use the ...
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1answer
47 views
Kernel parameters “console” and “earlycon” refer to old hardware?
I first found this by investigating parameters for earlycon but found that the options for console look almost identical. Both are present below and were taken from this source:
From documentation ...
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How to configure device mapper name of encrypted root partition with Grub2?
I would like to have my encrypted root partition mapped to the device mapper name system, i.e. it should eventually appear under /dev/mapper/system. My operating system is Fedora 24 Workstation Linux ...
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How to let kernel not run the printk with KERN_DEBUG
I noticed that kernel has different console levels for the printk.
I also noticed this post [1].
I understand that we can change the /proc/sys/kernel/printk to change the printk level for the ...
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How should the `crypto` kernel parameter be passed?
I've encrypted a root drive using a cipher with this format:
<cipher>-<chainmode>-<ivmode>:<ivopt>.
Let's call this [CIPHER] for short.
To boot from this device, certain ...
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1answer
111 views
View current kernel parameters?
I saw in my syslog kernel.perf_event_max_sample_rate get changed.
I was wondering if I could write a quick script to log this variable every few minutes.
Currently it is:
sysctl -a | grep kernel....
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1answer
225 views
Linux root on F2FS
I have my Linux root on an F2FS USB flash drive. The kernel is on another device accessible by the bootloader. I'm trying to start it with the parameters root=/dev/sda1 rootwait rootfstype=f2fs, but I ...
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209 views
Does systemd-modules-load.service recognise modprobe.blacklist option on the kernel command line?
I put modprobe.blacklist=configs into my kernel command line booting from gummiboot, and I checked if systemd is still trying to load the module configs, and indeed it is, because a module error ...
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1answer
106 views
Debian kernel runlevel parameter - xorg won't start with NVIDIA drivers
I am having trouble getting my display to work with the default debian kernel command line:
\boot\vmlinuz-4.2.0-0.bpo.1-amd64 ro root=UUID=4e496eaa-bcf1-41a0-9eee-dd1c8367c855 initrd=boot\initrd.img-...
2
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1answer
1k views
How to boot using a squashfs image as rootfs
I made a squashfs image from my system root, I want to put it on a USB drive among some Live ISOs, and make boot menu using GRUB2.
What kernel boot parameters should I use to specify that Squashfs ...
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What is the criteria to set highmem parameter?
I've read about highmem parameter of Linux kernel. AFAIK, that parameter only makes sense on 32-bit machines.
What is not clear enough for me is the criteria to set it. Please could you provide an ...
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72 views
How to boot without GFX drivers to allow low resolution
I am running Kali linux on my 13" notebook.
During the initial boot the font is blocky and large - which is what I want.
However as we progress through the boot stage, at some point the screen ...
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692 views
Cpu and memory utilization is high in Aix
Hello everyone,
I have problem with my CPU utilization I am using sar command to know my cpu idle % in that idle percentage is null and %sys %usr utilizing more, I am trying to check with topas,...
2
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0answers
56 views
How do I prevent the kernel from pivoting and overwriting the initial file system?
How do I prevent the kernel from pivoting and overwriting the initial file system?
What switches do I pass to the kernel?
Do I need to add any code to the initramfs?
I cross-compiled busybox and ...
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1answer
21 views
Do less severe log level INCLUDE more severe log levels?
Will loglevel=7 include the logs, for example, that would be produced by loglevel=0?
http://www.makelinux.net/ldd3/chp-4-sect-2
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2answers
104 views
Caps Lock LED not working
I recently installed kernel 3.14.27-100 on my Fedora 19 system and now I no longer get a Caps Lock LED when using virtual terminals. (It still works on X system ). Also, it works fine running kernel 3....
4
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1answer
396 views
how to completely blank video output on boot (no kernel logging, grub output, etc.)
So, this is an inversion of the classic question: "Why is my terminal blank on boot?" -- How do I make my terminal blank on boot?
I'm creating a Debian Wheezy system with GRUB as the boot loader that ...
0
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1answer
53 views
edit module requirements when compiling kernel
I would like to compile the realtime kernel for raspberry pi (https://github.com/emlid/linux-rt-rpi) and want to use the pi with a soundcard - the tascam us122l.
The problem that I have is the ...
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0answers
497 views
Can I make the boot even more verbose than loglevel=7 using kernel parameters?
I have an error when booting on a machine, my machine is stuck with the error message:
Booting a command list.
I can see this message when I add loglevel=7 and only if I delete the quiet in the ...
