I've been dual booting Linux and OS X. Before upgrading to El Capitan, booting to linux was speedy. Now, when I boot to Linux it takes a matter of minutes for the EFI boot loader (rEFInd) to execute. After a few minutes I'll finally see the rEFInd boot menu.
Any thoughts on what might possibly be causing this?
MacBook Pro (Retina, 15-inch, Mid 2014), OS X El Capitan (10.11)
Aha! So an NVRAM reset caused my rEFInd not to boot any more, then I re-installed rEFInd and it works now. The trick is to let the refind-install script install to the default OS X ESP partition, or use the --root option to specify a mount point for a custom partition, and make sure to bless the partition in --mount mode with the --shortform command (which, for some reason, makes booting fast, otherwise it is slow without the --shortform option).
For the exact details on everything I went through, see this question on Ask Ubuntu: http://askubuntu.com/questions/716662/why-wont-bless-make-refind-boot-by-default
To clarify:
It seems not to be the boot loaders fault (as rEFInd, finally started, boots into any OS - Mac or Linux - as fast as normal).
'Finding' the boot loader at startup is just crazy slow, doesn't matter if (re)booted from OS X, Linux.
If anyone got an idea would be really cool 😉
MBA late 2012, OS X El Capitan | Arch Linux | rEFInd 0.10.1
Ah, so I'm not the only one!
In my case, it takes long for rEFInd to eventually start, and yes, once I'm in rEFInd I can boot to an OS quickly, so there doesn't seem to be a problem in rEFInd itself.
If I hold `option` while booting, that takes me to the Mac boot screen with no delay, where I can boot OS X with no delay. The only delay I'm experiencing is waiting for rEFInd to finally start.
I tried some more times (after a SMC and NVRAM reset) and now only get delay when using Restart from within OS X itself. A normal boot from shutdown machine or a restart from Login-prompt work flawlessly.
However I'm wondering why you can go into Apple Boot screen with opt - when I boot it takes me to rEFInd whatever combo I press before; only after selecting the OS I can use opt + ...
Have you installed rEFInd on EFI / ESP partition or somewhere else?
Hmm, I've gotta try the SMC and NVRAM reset.
My rEFInd is installed on a separate EFI partition that I created. I used the "bless" command to make it boot by default. I didn't install rEFInd on the default EFI/ESP partition that comes with the machine.
EFI boot is really slow after upgrading to El Capitan.
