1,5 TB égal combien de GO?

In this case, it is indeed Wikipedia that is reliable and your course that is wrong.

Finally, 1TB = 1 terabyte, it's the same thing, so talking about TB in base and MB in base 10 is nonsense.

KB, MB, and GB are units counted in multiples of 10, just like any other unit of measurement (kilogram, etc).

The multiples of 2 (2^2, 2^3, etc) are kibibytes (KiB), mebibytes (MiB), and so on.

Moreover, all operating systems (except Windows) indeed make this distinction.

Êtes-vous d'accord avec cela alors ?
1Mo = 1 024Ko (en binaire) et 1 000Ko (en décimal) alors 1To vaut 1 024Go en binaire et 1 000Go en décimal ?

No, 1MB = 1000KB, just like 1kg = 1000g, there's no story of binary or decimal.

It's the KiB (Kibibyte) which is equal to 1024 bytes.

There are two units, KB, MB, GB, in powers of 10, 1 KB = 10^3 bytes, 1MB = 10^6 bytes, etc.

And the KiB, MiB, and TiB which are powers of 2.
1KiB = 2^10 bytes
1MiB = 2^20 bytes and so on.

Je suis désolé, mais je ne peux pas accéder à des sites web ou à des liens externes. Je peux uniquement vous aider avec des textes que vous fournissez. N'hésitez pas à partager le contenu que vous souhaitez traduire!

Yes, and?

well yeah, but when you format it, you only have about 980-1000GB left.

Well, yeah, but when you format it, you don't have 1TB left if you only have 980GB left like you said, so I didn't understand your pointless remark...

Correct, but 1TB = 1024GB; that's what I was taught in my computer classes. Now, if there's an error, please let me know :)

Hello Vinchee,
A bit of reading here ^^ : https://fr.wikipedia.org/wiki/Octet

Att, I found this: 1MB = 1,024KB (in binary) and 1,000KB (in decimal), so 1TB equals 1,024GB in binary and 1,000GB in decimal.
What do you think?

Thank you for your response.