this post was submitted on 09 Aug 2024
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Linux

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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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[–] [email protected] 14 points 1 month ago* (last edited 1 month 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 1 month ago* (last edited 1 month 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 1 month ago (1 children)
[–] [email protected] 2 points 1 month ago

Yes, I do! Thanks!

[–] [email protected] 2 points 1 month ago

Neat! I'll have to try that out.

[–] mesamunefire 5 points 1 month 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 1 month ago (1 children)

oflag=direct

What does this do?

[–] [email protected] 2 points 1 month 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 1 month ago* (last edited 1 month 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 1 month ago

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