Modify Wii sd.raw files on Linux?

[Roadhog360]

Title. WinImage seems to run poorly with Wine and is just a trial that I need to eventually pay for anyways, I am hoping to find a permanent solution which works on Linux and isn't a trial for a program I need to pay for. "sd.raw" is too broad to look up on Google and I can't find any results on Google which are what I am looking for even if I try to explain what I am looking for.

[JosJuice]

On Linux, you don't need a special program to do this. Take a look at the instructions here:

https://unix.stackexchange.com/a/316407

(Replace "file.iso" in the example with "sd.raw")

Then just open the directory that you mounted the SD card image at (in the example, "/mnt/dir").

The SD card images used by Dolphin don't have partitions, so ignore the part of the instructions that are for hard drive images with partitions.