i want to dive into the creating of file-systems on Linux. 

 

 

so i have some ideas:  can you give me some hints on these steps.  

 

can i break all down and say so: - in order to do the very first steps in creating a file system

... basically, I'm trying to do the following steps:

- create a disk image of about 500MB;
- create a GPT;
- create a FAT32 partition in the first 300MB(I'll call it UEFI);
- create a FAT32 partition in the remaining bytes(I'll call it SYSTEM);
- create the following subdirectory in the UEFI partition: /EFI/BOOT/;

that said we have the following things: 

Layouting a disk image and copying files into it

 

mkfs.vfat /dev/md3

 

# Creates an empty disk image of 33MB.

 

`dd if=/dev/zero of=uefi.img bs=1M count=330

 

# Formats the disk image as FAT32

 

mkfs.vfat uefi.img -F 32

 

# Creates the requested subdirectories.

 

mmd -i uefi.img ::/EFI
mmd -i uefi.img ::/EFI/BOOT

 

look forward to  hear from you
 

Edited September 7, 20233 yr by malaga

If you're looking for a result, and not trying to learn how to create the images manually, then I could recommend mkosi:

https://github.com/systemd/mkosi

 

It supports creating both container images (no kernel or bootloader) and real bootable images.