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New posts in osdev
Disk Read Function not Working as Expected in Bootloader
May 01, 2026
assembly
x86
nasm
bootloader
osdev
How did x86 real mode work on machines with <640K of RAM?
Apr 29, 2026
x86
osdev
x86-16
Working of the IRQs and the iret instruction semantics on a 32 bit kernel (protected mode)
Apr 28, 2026
c
assembly
x86
interrupt
osdev
How to get Keyboard inputs into a kernel?
Apr 24, 2026
c
x86
keyboard
kernel
osdev
Assembly boot loader working on virtual PC, not on real PC
Apr 24, 2026
assembly
x86
bootloader
osdev
Helper function to safely read structure from stream
Apr 21, 2026
rust
osdev
Compiling + linking a custom OS with Cygwin gcc: Unrecognized emulation mode: elf_i386
Apr 19, 2026
gcc
assembly
x86
cygwin
osdev
What are descriptor registers?
Mar 29, 2026
assembly
x86
intel
cpu-registers
osdev
Bootloader receives a disk read error when booting on real hardware but not on vmware, qemu, and bochs
Mar 14, 2026
assembly
x86
nasm
bootloader
osdev
Assemble 32 bit mode instructions in elf64 format with GCC (gas/as)
Mar 14, 2026
assembly
gcc
x86
osdev
gnu-assembler
Kernel.c not executing complete code [OS from scratch]
Mar 06, 2026
assembly
x86
kernel
bootloader
osdev
PCI Address Spaces
Feb 28, 2026
osdev
pci
Masm string variable inside bootloader causes: Undefined symbol error
Feb 25, 2026
assembly
x86
masm
bootloader
osdev
Using OUTB to set cursor position in my minimal OS kernel causes QEMU screen to flicker
Jan 30, 2026
c
assembly
x86
qemu
osdev
Include contents of char array in flat binary file
Jan 26, 2026
c
assembly
embedded
inline-assembly
osdev
Interrupt handler on C doesn't work after one interrupt [duplicate]
Jan 25, 2026
c
gcc
assembly
interrupt-handling
osdev
Load segment from floppy with int13h
Jan 20, 2026
assembly
nasm
x86-16
bootloader
osdev
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