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The startup function startup_32() for the kernel (also called the swapper or process 0) establishes memory management (paging tables and memory paging), detects the type of CPU and any additional functionality such as floating point capabilities, and then switches to non-architecture specific Linux kernel functionality via a call to start ...
Upstart operates asynchronously; it handles starting of the tasks and services during boot and stopping them during shutdown, and also supervises the tasks and services while the system is running. Easy transition and perfect backward compatibility with sysvinit were the explicit design goals; [ 4 ] accordingly, Upstart can run unmodified ...
Startup Disk Creator (USB-creator) is an official tool to create Live USBs of Ubuntu from the Live CD or from an ISO image. The tool is included by default in all releases after Ubuntu 8.04, and can be installed on Ubuntu 8.04. A KDE frontend was released for Ubuntu 8.10, and is currently included by default in Kubuntu installations. The KDE ...
A runlevel defines the state of the machine after boot. Different runlevels are typically assigned (not necessarily in any particular order) to the single-user mode , multi-user mode without network services started, multi-user mode with network services started, system shutdown, and system reboot system states.
GRUB 2, elilo and systemd-boot serve as conventional, full-fledged standalone UEFI boot managers (a.k.a. bootloader managers) for Linux. Once loaded by a UEFI firmware, they can access and boot kernel images from all devices, partitions and file systems they support, without being limited to the EFI system partition.
Used by Debian (replaces SysV init) and Ubuntu, among other popular Linux distributions. SystemStarter, a process spawner started by the BSD-style init in Mac OS X prior to Mac OS X v10.4; Upstart, a full replacement of init designed to start processes asynchronously. Initiated by Ubuntu and used by them until 2014.
The boot partition is a primary partition that contains the boot loader, a piece of software responsible for booting the operating system. For example, in the standard Linux directory layout ( Filesystem Hierarchy Standard ), boot files (such as the kernel , initrd , and boot loader GRUB ) are mounted at /boot/ . [ 1 ]
Boot screen of Ubuntu Karmic Koala v9.10. A bootsplash, also known as a bootscreen, is a graphical representation of the boot process of the operating system.. A bootsplash can be a simple visualization of the scrolling boot messages in the console, but it can also present graphics or some combinations of both.