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4

That photo says the kext (driver) for the Atheros airport card is what's causing the kernel panic. There's a very simple way to disable this kernel extension, although it's terribly hacky: go into /System/Library/Extensions/, and rename IO80211Family.kext to IO80211Family.kext.bak. Afterwards, go into the Terminal and run sudo kextcache -i / to rebuild the ...


2

What makes it bootable? This has change slightly over time. I will assume you are not going to use encryption. Below are some basic examples. This is not a complete list. The original OS X operating system. The partition should be type 48465300-0000-11AA-AA11-00306543ECAC. The partition should be JHFS+ formatted. If you are using the Disk Utility, you ...


2

According to @David Anderson (thanks!), the 2010 iMac came preinstalled with Snow Leopard 10.6.3. Therefore, there's a good chance that earlier versions of Snow Leopard (10.6.0–10.6.2) will not contain the necessary drivers for your machine, and will be impossible to install. Apple released at least two retail Snow Leopard installation DVDs—I own one which ...


2

A Snow Leopard DVD may not work on a 2010 iMac. For example, according to everymac.com a iMac11,2 (21.5-inch, Mid-2010) came preinstalled with OS X 10.6.3. So, if your Snow Leopard DVD is OS X 10.6 then you should expect problems when booting. Note: While one may think 10.6 should be 10.6.0, doing so would differ from Apple conventions. For example, see ...


1

Ran into the same issue, but when I bought the mac at the apple seems it was hardcoded to stay with Catalina and not downgrade to Mojave.


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I have finally found a fix: I left it overnight on the charger, sitting at a green light (100% charge). Apprently, that does a battery recalibration. Then, I was able to boot it from battery using the bootup pads on the mainboard. After then also cleaning of the keyboard connector (only like 3 keys were working) with isopropyl alcohol and some scrubbing, it ...


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To my experience, it is a question of Secure Tokens, if it doesn't accept the admin even though it has the shipped (old) macOS installed from the recovery partition. Even though you have created an admin account, you need it to have a Secure Token and update the preboot, for the recovery partition to accept it. I did the following (when logged in as the ...


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