4 ms·
That's resetting the PRAM and was required on old macs for some of the fimrware changes to actually take place (since the firmware was cached).
by aroch 12y ago
That's resetting the PRAM and was required on old macs for some of the fimrware changes to actually take place (since the firmware was cached).
- mattstocum 12y agoNo, resetting PRAM is triggered by holding down command-option-P-R. This was a special step that was required specifically for firmware updates.
- thanksgiving 12y agoThis reminds me of the hardware switch in the original Chromebook, the cr-48, which requires you to flip a switch underneath a piece of tape before you can install an alternative operating system. https://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices/cr-48-chrome-notebook-developer-information https://www.chromium.org/chromium-os/developer-information-f...
- m45t3r 12y agoActually, Chromebooks should be the most secure laptop platform nowadays, since every Chromebook has signed binaries and to enter in developer mode, you need some kind of switch so you can overwrite your bootloader. Of course, this is assuming Chromebooks' bootloader doesn't have any secured problems.
- mrsteveman1 12y agoAssuming that the signing key hasn't been compromised and added to an attacker's collection of keys, which is something certain three letter agencies have a habit of doing.
- IcePenguin 12y agoPowerPC Macs (in the 2000s, before the switch to Intel) did indeed require a manual step to update Boot ROM/firmware - a different mechanism than resetting the PRAM. You'd run the installer, then either shut down or reboot the Mac. As it booted, you'd either hold down the power button or the interrupt button (depending on the model) to initiate the update.