It’s a 6GB file so it might take a ‘lil while.
I also couldn’t find a single guide online that worked from start to finish, so here I summarise what needs to be done.Īs usual, this is all at your own risk ?įirst you need to go to Apple’s OS Download Page and (step 4) get ahold of “InstallMacOSX.dmg” for El-Capitan. Apple seem to assume everybody has a spare MacBook from which to create a bootable USB so they provide absolutely no documentation to help with this. I use Linux Mint on my main laptop and that was all I had available. I then turned to attempting to make a bootable USB stick of OS X El Capitan from an image downloaded from Apple. I also tried Internet Recovery (Command+Option+R) but that gave exactly the same error (and would also only have installed OS X Mountain Lion).
The detailed error log says “Chunk validation failed, retrying” about 1000 times and eventually gives up altogether.įurther investigation suggests this may be something to do with security certificates having expired and hence the machine not being able to download the necessary files from Apple’s servers, but it seems the error can appear for all sorts of reasons.
After about 30 seconds, a window pops up saying “ Can’t download the additional components needed to install Mac OS X” and the installation gives up. I tried that with this machine, and upon hitting “Reinstall MacOS X” was greeted with a prompt telling me it would take -2,148,456,222 days and 8 hours (an uncaught buffer overflow, me thinks). Having recently fixed a busted MacBook Air I had learned a bit about Recovery Mode (hold Command+R whilst pushing the Power button and release a few seconds after the machine wakes up). Since there wasn’t much worth saving I wiped it and initiated recovery mode in order to re-install OS X (El Capitan). I was recently given a 2011 MacBook Pro that had been “well-loved” and was therefore a mess of missing applications, ghost files and generally slow-as-hell.
Can anyone help me configure my bootloader so that I will be able to access MacOS again? I have no knowledge what is wrong and what/how would I fix it.How to make a bootable USB drive on Linux Mint (19.3) to allow you to install Mac OS X El Capitan on a MacBook with broken or corrupted recovery mode. However, MacOS option now isn't there (the instalation process was the same as the last time, including rEFInd part). Holding down option key only gave me EFI boot option so I installed Linux back on that 70GB partition and formatted it back into Ext4 ( woops, saw no other way around :D ) and thought that I will install rEFInd back and it's all gonna be fine. When I rebooted the machine, I couldn't get into my MacOS anymore. However, I couldn't merge two partitions together bacause of new Disk utility UI limitations, so I just left it as it is. I was stupid enough not to think about boot loader. I didn't really care until I saw both options in my boot menu.Īfter a while, when I was strolling through my Mac OS, I saw that I'm starting to lack some memory space, So I just wanted to delete my Linux partition and merge it with MacOS partition. However, when I rebooted the machine with holding down option key (alt), I still got default Mac bootloader with option of EFI boot (which was Linux) and Mac OS option (no rEFInd logos anywhere).
sudo add-apt-repository ppa:rodsmith/refind & sudo apt update & sudo apt install refind & sudo refind-mkdefault
When I installed mentioned Linux distro, I ran the following command in terminal, that was supposed to install rEFInd and set it as default boot loader.
The scenario is next: My Macbook pro 2012 only has one 256 GB drive from where I specified 70 GB's of space to be used as Ext4 partition that'd run Linux Mint. I recently stumbled upon a problem with default MacOS bootloader.