SD Card vs. Radioactivity | Data Loss? 

This will be useful when I bring my SD cards to Chernobyl.

I participated in a study investigating the vulnerability of different semiconductor circuits against ionizing radiation during my student years. We came to the conclusion that flash memory is pretty much indestructible when it comes to gamma radiation (at least against the intensities we could create). The vulnerability is the flash controller. Gamma radiation can cause current surges within the electronics when they are powered up, frying them. Even with a surge protection circuit it can cause the flash to be erased because of a current surge on the control lines. So you might wanna try again with the card inserted into a powered card reader for example.

"this is equivalent to over 40 years of background radiation" over 40 years would do more to the SD Card than the radiation will ever do

I'm happy you used the correct form of "data". Many people don't realise that data is the plural, and use awkward words around it.

First time on RU-vid I've seen a sponsor inserted into a video and I thought wow, that's cool!

Thanks for the warning about data loss in outer space. I'll keep that in mind next time I go there.

As soon as I checked my feed and saw this, my eyes lit up. Anything involving radiation or Chernobyl gets my attention. Immediately.

Nice video! The reason for the absence of any bitflip is because the energy involved with this kind of radiation isn't nearly enough... even if the total amount is still considerable. Bit flip can occur from cosmic rays which travel at near the speed of light carrying an immense energy in comparison.

Sounds like you need to partner with someone who has a particle accelerator! 😁

Next: HDD (Hard disk drive) vs Radioactivity

YES!! He uploads on a friday. By far my favorite youtuber!

I have asked this my self but coincidentally I don’t have access to this sort of stuff, I expected something to happen considering how complex these tiny things are, incredible how durable flash storage is

"aw damn it, I accidentally dropped my sd card in Chernobyl" "Oh dont worry, your data wont be lost, I just found a random youtube video regarding to this"

2:04 "I'm told it's the equivalent of a chest x-ray, so if you're due for a check-up..."

when the geiger counter says SOS in morse, you know it’s time to get out.

Everyone: Radioactive Me: I just love his SD card box, need one.

I don't know why i have head ache after watching this radioactive video

I could swear I've seen a few people at the airport ask for their SD cards to be checked manually instead of going into the X-Ray machine.

So now sd cards can survive laying between two rocks with a lot of radioactivity, but in the past when one chip factory used water with little radioactive particles, the chips were loosing data as hell

Another question is, will the geiger counter fail if the radiation is too high? It contains flash memory and a microprocessor too...

Dam! was gonna swallow some of that stuff to erase the data on the chip in my head🤪

I was fully expecting some data corruption.

The flash memory chips are only on the top side of the PCB, since all that's on the bottom of the PCB is the solder mask (paint)

can you do a long-term test over several months?

Try this again with a smart media flash card. They lack fancy things like memory controllers or error correction 😁

I know one Ukrainian channel where a team of 4 people walk along Pripyat, they seemed to measure the radiation there, they measured the radiation in the reactor itself, due to the fact that there was too much radiation, there were "broken" pixels on the camera when the reactor was shot close I would like to see if information survives with such radiation) The name of channel KREOSAN btw

Would be interesting to see if there's any difference if the card is in operation vs powered, ie write a known file while in the radiation and then read it back both outside and then inside the field again..

SD cards will die, when exposed to dentist x-ray tubes for 5--8 minutes (an inch from a lamp). Failure type is 'sudden' - user data remains intact, but "data managing program" corrupts first and disk becomes unreadable.

It would be interesting to know the memory cell technology of the card, how many nanometers apart the memory cells are and so on. That would help us better understand what sort of energy density is used to flip bits in normal operation, and imagine what radioactive level might be needed to flip bits.

In the introduct guidance counter was sending moore's code

If I saw a "gamma ray proof" label on an SD card, I would have so many questions...

Those angry rocks ain’t very scary to me. Can’t even hurt a puny SD card, I can take them on! - famous last words

For the next video I'll blast this damned cards with a nuclear bomb. The cards survive. God damn it I have to make more content now!!!

I'll remember not to bring my micro SD card anywhere near 10 000 000 bananas

Is he literally keeping an sd card on a radioactive element by holding normal tweezers with bare hands (in the intro and normal pair of gloves afterwards)!

Very interesting to watch deffinatly gonna subscribe

“I want my sd card to be resilient in all situations...” So... you're planning to use it in a nuclear power plant?

Now try to use: ДП - 2 (Cs-137) КИ -1 (Pu-239 (from 238 to 242)) БИС - Р (Sr-90 and Y-90)

thank you for the warning i was about to go to space but think ill play with my phone on the toilet again o well

It's funny to believe that I would actually be a valuable candidate for the ESA in 6 years if I play my cards right as an Energy Engineer. That's honestly way better than I expected.

5:52 saying "purely beast" as soon as the Geiger counter shows 666 is cinematic genius or troubling coincidence.

I actually became an astronaut for esa and had a trip through the whole galaxy but then I woke up.

The only way you'll get a bit flip is if the MOSFETS that represent the data are hit with either an Alpha particle or a high energy Neutron or Proton. An alpha particle is stopped by a piece of paper. So I doubt many alpha particles are making it to the SD card, and none are going through the outer plastic package. A beta particle (an electron) is very unlikely if not impossible for it to hit the electron out of a mosfet. And I doubt that natural uranium is giving off many neutrons. The reason some issues occured in some chips was because the actual pacakging was made with trace amount of uranium, causing alpha particles to be essentially next to the mosfets

While this is a practical test it isn't a reliable one. The proper way to do it is to get a dd image before and after and get a checksum of those. File systems have consistency checks built in for random bit flips, especially in important places. Testing at file level is several layers deep already. If you want to test the raw data you need to test the raw data, not files on a file system inside an operating system. On top of that flash memory storage is... weird in it's own way with how it handles data. There is more space on the drive than used by the operating system, bytes aren't sequential and deletion is different from writing than in regular magnetic storage. The checksum is not unique to the data. How could it be? As you said it's 256bit or 32 bytes * 4 for 4 files making 30GB. The idea of a checksum is to verify large data without a byte by byte comparison. Or in some cases to verify different lengths of input data with the same length output data.

now i feel the weird urge to mill a microSD slot into a solid radioactive rock

Are you chernobyl news reporter?

Plot twist: he pluged in his sd card the the pc went **NUKE**

I wonder if higher storage densities are more vulnerable.

I wonder if higher capacity cards will benefit from the same resiliency. A lot of SD cards contain the same actual storage capacity and the card's software configuration is what changes if it's using it as additional storage or redundant storage. This is due to cheaper manufacturing. So a higher capacity card has less redundancy than the lowest (in most cases)

Maybe the CRC built into sd card is fixing error on fly. If this is so, very few bits are flipped.

Interesting video! Are your 858uSv/h you got with the Radiascan on the pitchblend with or without shielding cover?

Well if it would be that easy to kill memory we would have a big problem with Satelites and other spacecraft. Would be pretty expensive to shield them with lead i think. But i read somewhere that thing's like a CPU are far more sensitiv for radiation. If you have a old Spartphone or Pc try to kill it with radiation. Would be interesting to see :D

I suspect you need something more energetic than your usual decay products. I wonder if a small particle accelerator could get more impact.

Everybody has some Uranium rocks laying around the house

Next vídeo: SD card vs toxic waste

legend says that now there is copy of stalker in that card

We learned something: Be careful of damaging SD cards while you're in space

Thanks for your sharing

should have used the guider counter on the card to see if the card became radio active in any way.

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It's a language where you take all the consonants before the first vowel, move them to the end, and add '-ay' to the end. If the word begins with a vowel, you just add '-way' to the end. For example, "Waffles" becomes "Afflesway". I've been speaking Pig Latin fluently since the fourth grade, so it surprised me when I saw the episode for the first time. I speak Pig Latin with my sister sometimes. It's pretty fun. I like speaking it in public so that everyone around us gets confused. That's never actually happened before, but if it ever does, 'twill be pretty funny. By the way, "'twill" is a word I invented recently, and it's a contraction of "it will". I really hope it gains popularity in the near future, because "'twill" is WAY more fun than saying "it'll". "It'll" is too boring. Nobody likes boring. This is nowhere near being the longest text ever, but eventually it will be! I might still be writing this a decade later, who knows? But right now, it's not very long. 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It's this language that was made up by some guy a long time ago to be the "universal language". A lot of people speak it. I am such a language nerd. Half of this text is probably gonna be about languages. But hey, as long as it's long! Ha, get it? As LONG as it's LONG? I'm so funny, right? No, I'm not. I should probably get some sleep. Goodnight! Hello, I'm back again. I basically have only two interests nowadays: languages and furries. What? Oh, sorry, I thought you knew I was a furry. Haha, oops. Anyway, yeah, I'm a furry, but since I'm a young furry, I can't really do as much as I would like to do in the fandom. When I'm older, I would like to have a fursuit, go to furry conventions, all that stuff. But for now I can only dream of that. Sorry you had to deal with me talking about furries, but I'm honestly very desperate for this to be the longest text ever. Last night I was watching nothing but fursuit unboxings. I think I need help. This one time, me and my mom were going to go to a furry Christmas party, but we didn't end up going because of the fact that there was alcohol on the premises, and that she didn't wanna have to be a mom dragging her son through a crowd of furries. Both of those reasons were understandable. Okay, hopefully I won't have to talk about furries anymore. I don't care if you're a furry reading this right now, I just don't wanna have to torture everyone else. I will no longer say the F word throughout the rest of this entire text. Of course, by the F word, I mean the one that I just used six times, not the one that you're probably thinking of which I have not used throughout this entire text. I just realised that next year will be 2020. That's crazy! It just feels so futuristic! It's also crazy that the 2010s decade is almost over. That decade brought be a lot of memories. In fact, it brought be almost all of my memories. It'll be sad to see it go. I'm gonna work on a series of video lessons for Toki Pona. I'll expain what Toki Pona is after I come back. Bye! I'm back now, and I decided not to do it on Toki Pona, since many other people have done Toki Pona video lessons already. I decided to do it on Viesa, my English code. Now, I shall explain what Toki Pona is. Toki Pona is a minimalist constructed language that has only ~120 words! That means you can learn it very quickly. I reccomend you learn it! It's pretty fun and easy! Anyway, yeah, I might finish my video about Viesa later. But for now, I'm gonna add more to this giant wall of text, because I want it to be the longest! It would be pretty cool to have a world record for the longest text ever. Not sure how famous I'll get from it, but it'll be cool nonetheless. Nonetheless. That's an interesting word. It's a combination of three entire words. That's pretty neat. Also, remember when I said that I said the F word six times throughout this text? I actually messed up there. 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Well, I just put some waffles in the toaster, and I got reminded of the very beginnings of this longest text ever. Okay, that was literally yesterday, but I don't care. You can't see me right now, but I'm typing with my nose! Okay, I was not able to type the exclamation point with just my nose. I had to use my finger. But still, I typed all of that sentence with my nose! I'm not typing with my nose right now, because it takes too long, and I wanna get this text as long as possible quickly. I'm gonna take a break for now! Bye! Hi, I'm back again. My sister is beside me, watching me write in this endless wall of text. My sister has a new thing where she just says the word "poop" nonstop. I don't really like it. She also eats her own boogers. I'm not joking. She's gross like that. Also, remember when I said I put waffles in the toaster? Well, I forgot about those and I only ate them just now. Now my sister is just saying random numbers. 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were both alpha and beta particles tested? it would also be interesting to see a prolonged version of this experiment. maybe a week or a month dose of radiation.

I guess you would really have to cook the sd card for a year straight in chernobyl reactor 4 xD

Next time: SD card between two radium metals

I want to do this experiment for myself. Let me just go to the kitchen and get my radioactive material...

This Uranium chunk tastes like mint and we will never get to know

You bag the hand but set the geiger counter right on it

Were you wearing protective gear and how did you then got rid of everything?

Negative results are still results. I think you could've prevented contamination more effectively since you could've encased your samples in bags and done your experiment the exact same way. I know you thought about it, just can't figure out why you didn't do it...

Why does the most dangerous shit always look so cool

Beautiful video.

Test hardrives next I think they will get affected for sure.

a) same test while in operation is much harder to survive b) go with Protons instead of gamma and they will fail imeadiatly :)

I don't know what type of radiation is expected from these stones, but the lack of focus in the video about the type is somewhat concerning, gamma radiation should have far more impact than alpha

I guess, you measured radiation with Radiascan back lid open. If so, you measured, mostly, alpha particles (uranium is mostly, alpha radiator), those can't penetrate SD card surface. You should measure with closed lid (turned to "beta" side) to measure beta and gamma radiation only, those could affect flash memory. And you can manipulate stones directly with your hands in gloves. Rubber or latex gloves are enough to prevent skin contamination with radioctive dust (which is the most dangerous factor, together with dust inhalation, so respirator is strongly suggested too), also gloves stop alpha particles. Beta and gamma radiation is quite little, unless you would handle those stones days a row.

I wonder if the SD card would survive a demon core accident, like the one that killed poor Louis Slotin.

Ooh so radioactivity can't erase or corrupt my SD ... but messing with SD partitions can kill it...

Ok, I'll make sure to get radiation resistant SD cards and store them in a lead container to absorb some of the radiation the next time I go to space.

How tf did you get uranium?

This is what need to delete my files that I do not want my mom to see XD

this will greatly effect my mario 64 playthrough

@Povilaz i noticed that too

I would have just simply put it in a particle Accelerator and tried it that way

I love how i always bought these pny cards bc its the cheapest but the strongest here in france, and now knowing all this, this is kind of a nice investment lol

DAMNIT WHY DO I WANNA PICK UP THE GREEN ROCK SO BAD

The hottest item you can get easy is an old watch with Radium coated dials.

How did you even get these radioactive materials?

I think you need much more then 45mSv for different results. The radiation limit for a Fukushima worker is 200mSv/year. The same radiation can you have from natural sources on some places in the world, for example Ramsar (en.wikipedia.org/wiki/Ramsar,_Mazandaran#Radioactivity) or Guarapari (en.wikipedia.org/wiki/Guarapari#Radioactivity). A SD card should survive a natural ray-level for more then a year. Sometimes people are on special places and have to deal with a little bit higher radiation level (115 mSv/h !) and want to capture this event on SD card: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6kg4vVYKc90.html I thing she would be very unhappy, if her SD card had failed on this day.

Does uranium undergoes gamma decay? It seems it undergoes mainly alpha and beta decays.

Uranium decays alfa and beta. Not gamma. Beta rad are blocked by the plastic case of sd card

Why u didnt wear any protection at first?

The poor SD-Card. Vikings are so brutal 😔

*Cuddles cat* Honey why is my DNA untwisting?

Now do it while taking a photo and electrons are moving

Did you back up the card?

8PM and the sun is shining WOW

If the reading of the detector was contributed mainly by alpha or beta particles instead of gamma ray, the result would not be unusual. Alpha and beta particles can't penetrate the plastic shell of a SD card. The strength of the gamma ray emitted should be measured otherwise such an experiment is not very convincing.

3:47 cooking sd card be like

Not that surprised by this electronic components deal with radiation just fine it’s EMP that kills things like SSD’s etc…

where do you keep those radioactive rocks anyway ? in your backyard ?

2:02 REAL ICE