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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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ISOs Explained + four programs to make Linux boot media (makertube.net)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 14 points 4 months ago* (last edited 4 months ago) (4 children)

dd, or cat with a shell redirect are all you need to write that iso.

My trouble with dd is all the flags I need to remember to make it fast and more convenient. dd if=file of=/dev/device oflag=direct status=progress bs=1M is there anything I'm missing?

[–] [email protected] 7 points 4 months ago* (last edited 4 months ago) (2 children)

bs=1M

This part varies based on your hardware (my hardware is much faster with a value of 4096) , but other than that it's everything.

Here is a handy script that can help determine which bs size is best for your hardware.

[–] [email protected] 2 points 4 months ago

Neat! I'll have to try that out.

[–] HumanPerson 2 points 4 months ago (1 children)

I think you might mean 4096.

[–] [email protected] 2 points 4 months ago

Yes, I do! Thanks!

[–] [email protected] 4 points 4 months ago

dd can be soooo much faster too. But like you, I always forget the tags. I should make an alias sometime...

[–] [email protected] 1 points 4 months ago (1 children)

oflag=direct

What does this do?

[–] [email protected] 2 points 4 months ago (1 children)

oflag=direct

Prevents the writes from piling up in the cache. dd will report the transfer is done when the writes have been cached so this setting prevents dd from exiting until the data has been written completely to the block device.

[–] [email protected] 2 points 4 months ago* (last edited 4 months ago)

Use conv=fsync

This ensures the cache is written before dd exits, but doesn't necessarily write to disk directly. This means that, for small files, dd can finish release its hold on the input file quicker

[–] [email protected] 1 points 4 months ago

The video description says it's aimed at Windows users, dd and cat have no power there