Greybeard Qualification (Linux Internals) part 4: Startup and Init

A Google TechTalk, presented by Ken Guyton, 2008/05/13
Greybeard Qualification Series (Linux Internals) part 4: Startup and Init

[@Kira_x86_64]

I miss the m6800 instruction set. I spent so much and so little time with it. Sadly I no longer know the instruction set in hex by heart but it feels so so good to spend an hour putting data in and then you flip the run switch and it does what you want.

[@marko90000]

Back in the day when I worked in AT&T we had much bigger mainframes not yet running Unix as we ware making custom hardware and software speeding up computation while keeping in hardware memory encryption which was one of the first important consideration for other companies which wanted to buy our mainframes. We had offsets and mutually canceling operations that used to encrypt sequences of data in memory and they get decrypted when written to the memory tape or the printer each type of operation was done on encrypted data when possible as many mathematical encryption operations are cancelable by the same just reversed set of operations and for different type of operations over the data different type of cancelable mathematical encryption operations ware used so that when your hardware stop and that ware big machines no one can read the actual data just from the state of reading the memory state.

[@parrotraiser6541]

This is 13 years old. LILO's now obsolete, and GRUB's had a second version. systemd replaced most of the starting processes,

[@demiann4160]

True but is one of the best explanations I found as well

[@kevinjoseph8119]

I wish there was a refresher of this course.

[@jindiggs]

Although all the concepts are still the same.

[@lattehour]

ytube linux internals you will find some newer explanations@@kevinjoseph8119

[@lattehour]

​@@kevinjoseph8119 init is still used in some embedded systems you should learn about it but dont put much effort , systemd is heavy on embedded hardware and really not required in 30-40% of applications

[@ChrisJackson-js8rd]

why is the intro clip volume so high when the volume on the actual video is so low..