On 11/05/2017 13:04, Whisky-dave wrote:
On Thursday, 11 May 2017 10:20:48 UTC+1, David B. wrote:
On 11/05/2017 06:24, nospam wrote:
[....]
macs don't care if they're booted from internal or external drive,
whether it's usb, firewire, thunderbolt or sata. as long as the system
on the drive is compatible with the mac, it will boot, without any
changes necessary. they can even boot and install macos over the
internet to a blank hard drive.

there is also a recovery partition, which is automatically installed
(and is used for more than just recovery), so you don't actually need a
separate emergency boot disk.

Hi 'nospam'

Do you know what processes occur if/when one uses 'First Aid' (Disk
Utility)?

Can it REALLY fix things which are wrong?

Of course but then again it does depend what is wrong.

I was thinking about being attacked by malware.

FYI
http://www.macworld.co.uk/how-to/mac...ttack-3594625/

it can only do pretty basic file system stuff, so if there's smoke coming out, it won't put the magic smoke back in.

Understood! :-D

--
"The important thing is not to stop questioning."
- Albert Einstein