Linux Boot Process: Grub, initrd, explained.

Learn the basics of Linux boot process:
* BIOS
* GRUB / GRUB2
* LILO
* initrd (Initial RAM disk)
* /boot directory in Linux
* Linux kernel and kernel naming
* The dmesg command and log file
If you enjoyed this video, then you'll love our Linux Administration Bootcamp course:
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[@LinuxTrainingAcademy]

What did you learn about the Linux boot process?

[@alexxander8341]

use "dmesg | head -20" to see the FIRST 20 lines.

[@calmvolatility2787]

I learned the bios loads the boot loader. So it’s a bios loader that gives us the boot loader that gives us the OS that loads apps.

[@hhskladby1596]

I am very happy with syslinux loader the last decade, as well with BIOS as with UEFI. Lilo was wild west, GRUB tried to tame the stampede, both are now in their niches.

[@hhskladby1596]

You managed to put much info in a short span without being hasty!

[@youthfull3616]

Very crisp and clear explanation .Thanks

[@user-ff9rx7kq2g]

Thank you for making this video

[@TiagoChiaveri]

Cuida com carinho do meu like! Você é ótimo.

[@ladymurrieta645]

Thaaaaanks

[@user-dg4tl4bw6v]

I heard ME is running before we push any button.

[@ahmetmutlu348]

But what if it says cannot find squashfs image . ;P we need some kind of gui or automated script/program to make it find it . It cant se the file on some directory. Thats the main problem on linuxes

[@domaincontroller]

00:51 initrd
01:23 vmlinuz, compressed, vmlinux, uncompressed
01:42 dmesg, var/log/dmesg, generated by the linux kernel, ring buffer

[@seunmatthew4497]

I love to buy your course but my attention is focussed on redhat and getting the rhcsa exam? Do you think I will get that focussed knowledge from the course

[@Unknown-ll1zt]

*facepalm* Just give up on Linux, of course it helps if you dam listen -_-

[@seunmatthew4497]

@@Unknown-ll1zt What are you talking about

[@alexxander8341]

@@seunmatthew4497 "unknown" was being sarcastic. learning linix no matter the flavor/type is going to benifit you. besides... most commands/tools are similar in nature. as a matter of fact, if you find the source code on github, you can use other tools from other platforms as long as they compile 100%(no errors).

[@calmvolatility2787]

BIOS is software, OS independent. Where does it live?

[@r_spohr]

BIOS is coded into ROM that's part of the motherboard

[@hhskladby1596]

We call it, as said in vid, "firmware" - your hardware manufacturer may / should allow to flash it, so it's rather EPROM instead of ROM

[@goooooo9197]

My Linux freeze ata loding initial ramdisk plz helo

[@anshultiwari2704]

I'm struggling with same problem

[@anshultiwari2704]

Please help me if you have found a solution

[@dr.mikeybee]

It's in /var/log/kern.log not /var/log/dmesg.

[@LinuxTrainingAcademy]

It really depends on how syslog is configured. Each distro has a slightly different config.
For a full explanation see this: www.linuxtrainingacademy.com/linux-syslog/