OSDev.org

I'm planning to use an old macbook instead of my computer to carry out real-hardware testing for my os, but for some reason, both rEFInd and apple boot manager isn't recognizing my usb. Is there a way to override it and force boot from my usb or smth?

Details of the Mac and how you created the usb drive would be helpful. And what do you mean by a "legacy" USB?

Personally, I wouldn't use a Mac for testing OS development (other than to test that it works on a Mac.) For starters (I think) you'll need a working USB stack to access the keyboard.

You might want to look at this thread: viewtopic.php?t=25130

iansjack wrote:Personally, I wouldn't use a Mac for testing OS development (other than to test that it works on a Mac.)

I agree. There are lots and lots of minor changes to make it incompatible with a standard PC (non-standard PCI IDs and non-standard EFI firmware for example).

iansjack wrote:For starters (I think) you'll need a working USB stack to access the keyboard.

I can confirm that PS/2 emulation doesn't exists on Mac. And this isn't the only one, almost all of the usual PC hardware (which is emulated on most computers these days, like the PIT/RTC (HPET emulated), PIC (IOAPIC emulated) etc.) doesn't have the emulation turned on and therefore needs specific drivers.

iansjack wrote:You might want to look at this thread: viewtopic.php?t=25130

Oh, that was almost 9 years ago already?

Cheers,
bzt

bzt wrote:Oh, that was almost 9 years ago already?

Could be relevant if the MacBook is that old.

iansjack wrote:Could be relevant if the MacBook is that old.

I meant I've answered that question 9 years ago.

I was using a different nickname back then, for which I've forgot the password when my older boy was born and I put OSDev down for years. And when he grew older and I got back to the game, I couldn't recover the account because the mail provider was shut down in the meantime. So I had to create a new account with my monogram, but I'm still using the same avatar on my github. All the forum posts and wiki editions under the name turdus was me (it is a very long story how I got that nickname).

Cheers,
bzt