Chapter 5 Understanding the Boot Process Flashcards
What is GummiBoot? pg 246
is an open-source EFI boot manager that’s conceptually similar to rEFIt or rEFInd,but it uses a text-mode interface and fewer options.
What is the Kernel Ring Buffer? pg 247
The kernel ring buffer is a data structure that records messages related to the operation of the kernel. A ring buffer is a special kind of buffer that is always a constant size, removing the oldest messages when new messages come in.
There are three popular initialization process methods used in linux distributions. What are they?
SysV, Systemd ,Upstart
What is the init process?
the init process run by the Linux Kernel.
how do you change systemd init targets?
use systemctl programs to start and stop services as well as to change the target level of the system.
at any given moment, vi is running in one of three modes:
pg 265
Command Mode
Ex Mode
Insert Mode
What does the isolate command do? pg 262
Starts the named unit and stops all others.
Initial RAM Disk-pg 241
In computing, initrd (initial ramdisk) is a scheme for loading a temporary root file system into memory, which may be used as part of the Linux startup process. initrd and initramfs refer to two different methods of achieving this.
What is rootnoverify? pg 241
its similar to the root option execpt that GRUB Legacy wont try to access files on this partition.
Chain-loader pg 241
It tells the GRUB Legacy to pass control to another boot loader.
Timeout option?
timeout= option that defines how long,in seconds to wait for user input before booting the default OS.
Identification Code or id pg 252
consist of a sequence of one to four characters that identify its function.
run levels
consist of a list of runlevels for which this entry applies.
process field
is this process to run for this entry, including any options and arguments that are required.
where might the BIOS find a boot loader?
Master Boot Record.
