Every time I watch one of these videos I always imagine going back in time and showing it to an early computer scientist and seeing their reaction to how far we've come.

@imaytag

7 жыл бұрын

Heh, yeah. But I meant going back to a time when the technology was still developing. And seeing their reaction for those times when Carrie Anne casually references the capabilities of modern computers.

@sauravligal5809

4 жыл бұрын

evolution of computer is fast...

@nosuchthing8

4 жыл бұрын

Yeah, but they would be shocked we still don't have human level ai.

This crash course is one of the most delightful things to ever appear on the internet. Thank you Carrie Anne, Stan and everybody else involved.

Defragmentation was fun to watch... If you had angelic patience and nothing better to do. Before defragmentation - 25% fragmentation. 12 hours later - 24% fragmentation.

@samuelisaac2984

4 жыл бұрын

24 hours later: 26% fragmentation.

It's great that the presenter doesn't shy away from "advanced" topics (in any of the videos in this course) - that provides something for every "level" (beginner / intermediate / advanced) of viewer. Great job with these videos !

Only 90's kids remember how fun it was to watch defrag.

@hopeg97

7 жыл бұрын

Pajaat Or 00's kids with passed-down legacy hardware. I remember watching Windows XP defrag. I think I also remember Windows 7 defragging, but it wasn't nearly as fun. (born '97, so anything before 2002 is lost to childhood amnesia)

@JimPlaysGames

7 жыл бұрын

You can always get third party defraggers with nice GUIs that show off the data juggling.

@huge_aubergine

7 жыл бұрын

I wouldn't say it was fun. I was expecting my Windows to run smoothly after every defrag, but it never happened :(

@RomanKorostenskyi

7 жыл бұрын

I'm 00's kid, and I remeber that defrag^^

@IIGrayfoxII

7 жыл бұрын

The Windows 9x defrag utility was the best, all those little blocks. XP just had the stupid bar which didnt tell you much Windows vista and newer got rid of the animations with the claim it improves performance.

After so many years, I finally know defragmentation means and what it does. Thank you so much.

We're now up 20 Layers of abstraction.

@orion10x10

5 жыл бұрын

l a y e r s

@Fcycfvyvvyvtfutg

4 жыл бұрын

That’s not how it works...

I just read a full textbook chapter on this, but the way you described file systems made it so easy to understand! Thanks for this excellent, concise video. Great work!!

This is by far the Crash Course series from which I have learned more. Thanks, Excellent work!!!

I often speed up informative KZread videos by 25%. This extremely good presenter obviates the need, and speaks just about 25% faster than "normal" with perfect articulation and fluidity that makes it easy to take in what she is saying without any flaws to distract. A playback speed of 80% would "undo" a 25% increase over "normal". (1/1.25=0.8). If you slow this video to 75% (the closest to 80% that's available), the presenter sounds like she's speaking a little more slowly than normal, so I'd say, yes, she's naturally speaking about 125% of normal rate. And, very well done!

YAY two of my favorite series uploaded on the same day.

Love this whole series, you make it easy to understand the flow of technological advancement

I feel like I struck gold with this series! Thanks for making these videos!

crash course has biggest impact on the world in recent decade. it changes the way we see KZread, technology and education. thanks to green brothers.

Wow, my first time watching a video from your channel. As I am interested in File Systems I came across this video. You, Carrie, can explain it very clearly and your animations and sounds are pleasing on the eye ;)

This was pretty good! Read a couple chapters today in a Linux book covering storage partitions and file systems and this had some tidbits a fairly technical book left out. I’ve been developing for 5 years now and finally just now falling in love with computer science

This video is really informative for knowing nitty gritty about file system specially "Block Storage"... It can also be used to understand about newly evolved Object storage...

best explanation for file system. I saw around 10 videos till now. thanks and congrats

I am glad to have found this series. Very informative. I will recommend to others!

Just realised it's a bit ironic that these computer science courses are called "crash" course. ;)

@jakekimds

7 жыл бұрын

Crash Course rocket science... coming soon!

@tanxyrogue847

7 жыл бұрын

coincidence isn't irony but that doesn't stop the phrase from being ironic

@bakedutah8411

7 жыл бұрын

I wonder who first used "crash" to describe a computer getting into a fankle. It's such a common usage I'd never thought about it until you just mentioned it.

@AckzaTV

7 жыл бұрын

no its not ironic because Crash Course was not made just fpr computer science, this is all brand new subject, man after they have every subject on earth done there will be No need for school or teachers and thank god

@justluc8556

5 жыл бұрын

😂

Exactly what I was looking for.Thanks for spreading knowledge.

Love the series so much!

I'm fascinated by how you explain about metadata and data! So cool!

Carrie you are my new spirit animal.

I remember the first time a teacher told me to find a _file_ on a computer ..... I spent 5 embarrassing minutes looking for any icon that looked like a clipboard or spiral notebook. Later I found out that was the Calendar icon.

@shirshendudebroy2097

6 жыл бұрын

hahahaha

you have worked hard to make these videos.These videos are the best about computer science.

Fantastic, logical, well structured explanation. Thank you so much.

I like how these videos make use of the font Terminal. It's a really good pixel font, which it honestly has to be since it's used on the Command Prompt.

Big fan of your teaching. Awesome as always, thanks a ton!

This was so informative, loved it. Thanks so much!

TY Carrie Anne, love your series!!!

Very educational, keep the great content coming!

I can understand the simplification, but it is important to remember that many programs running under Unix/Linux do not care about extension and furthermore EXT4, a common Linux filesystem, does not experience fragmentation.

@TYKUHN2

5 жыл бұрын

Peterolen very few programs (at least that I work with) care about the extension

WHEN WILL THERE BE "ANOTHER LEVEL OF ABSTRACTION" TSHIRTS?!!!!

this is sooo well put together! thank you!!!!

i love this series so much

So interesting and engaging, great work. I think this is my favorite crash course series

Wow, you are so amazing. I love the course.

this series is SO empowering

How I am so late to know about this amazing channel!!! I guess nowadays youtube is getting so much filled by shitty channels that awesome channels are getting missed!

This explains so much!! wish I could liked it more times

I just wanted to say you are awesome, you do a really good job.

A bit of extra info about the making of custom file formats: since the data just needs to be in an order that the program using it can process, and that program is usually made by humans to at least some extent (though rarely entirely nowadays), it's also not uncommon to design new formats on top of text formats so that they'll be "human-readable". This is especially useful if you want users to be able to adjust data themselves, such as in the case of configuration files and simpler level editors for video games. That method also helps the data be easier to transfer across different computer architectures, which is why it's used in html and xml (formats used for websites and similar applications).

@Roxor128

7 жыл бұрын

The downside, of course, is that text-based formats are rather space-inefficient and writing routines to read them isn't the simplest of tasks. Mainly because when it's human-readable, humans will edit it, and the mistakes they make are many and varied, requiring a lot of work on your part to figure out where they've gone wrong and come up with a suitable error message. Much like writing a compiler, actually. Most of the work there is making sure the file it's been fed is valid Foogol code (I hope nobody has made an actual language with that name because it's a good placeholder name).

wow, What an explanation. Thoroughly enjoyed the video. Like The concept taking from the very basic. Thanks :):)

what a satisfying video, I love my file system

>Opens audio editor >renames a jpg as .wav >opens ".wav" in audio editor >adds effect >saves ".wav" >Renames to .jpg >Opens in hex editor >fixes metadeta that was lost/damaged >Opens image

that clears up a lot, cant believe I have just understood fragmentation after 20years using computer

Liked and subscribed! Loved this video. Thank you!!!

I can't.... Stop..... BINGE WATCHING!!! I feel the knowledge coursing through my grey matter, ALMOST TO LEVEL 9000! WHAAAH!!!!

Looking forward to Crash Course: Interpretive Dance :)

This series is so good

"Defragmentation [...] once upon a time it was really fun to watch." Indeed. RIP old Windows defrag tool 😢

I learned a lot from Carrie Anne than my professors xD Thank you Crash Course! :D

Thank you this was very helpful and informative 👍👍

This is pretty cool keep it up I wanna be a hardware engineer but I like learning about everything

Nice videos! It would be great if you could talk about other file systems, for example ext or fat and show how they work and their limitations. And also, in the part of file format could have been mentioned linux administration for them (inods) Thank you very much!

awesome as always

really enjoying this series

Amazing explanation!!

It would be awesome if you explain how is the data represented in a screen and the way screens work :D This videos are fantastic. Keep going!

@hciprof

7 жыл бұрын

Hang tight. We're getting there!

i always somehow end up coming back to this computer science crash course XD

The best thing about SSD's? No defragmentation required.

@BertGrink

7 жыл бұрын

Not only is it not required, but it would actually be detrimental to the "health" of the SSD, since each storage cell can only be written to a limited (albeit reasonably large) number of times.

@Leela_X

7 жыл бұрын

미셜비 that only half the truth. ssds will preread/precache the next blocks just in case they are needed, defragmentation can have a performance benefit even on ssds

@andythepandaninja3859

7 жыл бұрын

teleturbo Trying to defrag a SSD would do more harm than good as explained by Gert Brink Nielsen.

@Leela_X

7 жыл бұрын

AndyThePandaNinja it depends how you defrag and what filesystem you use .

@NizarElZarif

7 жыл бұрын

usually, SSDs have their own firmware and controller that knows what is the health of each block and where the data is best located. the controller along with the firmware handles defragment and file placement. this is much better than relying on your operating system since the firmware maintain optimal health and speed and reduce data corruption is best left to the manufacturer since each type of SSD uses different NAND types, and different controllers and different configuration.

HALT and CATCH FIRE, I miss the good old days.

@justplainc

7 жыл бұрын

Tell me you also watch the show!

Very helpful. Thank you.

Incredible and informative ...

I love this episode ☝️❤️❤️

Nice video. Good work!

Amazing content!

Beautiful!

amazing content. Thanks

These guys are awesome

this is agood lesson and you are a good teacher

very good explanation.

Love that the part about 'deleting a file' is the most replayed

Very useful!!

i remember my father doing defragmentation on windows xp. it was about 7-8 years ago. i remember it was so colourful

Wooaaahhh!!!! What a video!!!!

the fact this is free blows my mind

I think it might be worth mentioning a single file can have multiple paths. Also that hierarchical ordering mechanisms like folders aren't the only solution. We might see non-hierarchical tag-based filesystems in the future.

Thanku so much Crash Course Woman

This was an incredible episode!

I'm having a quiz in 2 days. Thank you!

really wonderful presentation. I love this series. Also, Carrie Anne 😍

superb ...

Way to go Carrie Anne. Great video!

Good Video!!

good explanation

It would be really nice if there was a Business CrashCourse

Thank you, I finally figured out what is metadata, and why it has this f...antastic name.

I would have loved to see a little bit mentioned about file compression here, or maybe this is in an upcoming episode.

@hciprof

7 жыл бұрын

The force is strong with you. It's episode 21 :)

Nice programme

Crashcourse is better than my college professors

This is so amazing, i cannot thank you enough for such a wornderful job.

I've always wondered this.

I remember loading programs through DOS on start up. Changing command prompts etc. Now, all I ever deal with is testman errors using FORD scan tool software. No clue with all this new stuff.

brilliant

Way awesome then Galvin Book!

I want too"" learn all I can about science & technology good to learn what we don't know thanks

File systems are the best!

Number of abstraction level > storage space in my head👍