Won't Start - Failed Upgrade

Macinstall11

macrumors newbie
Original poster
Sep 20, 2018
23
0
The MacBook Pro was running on Yosemite, I tried upgrading it to High Sierra (latest compatible version with this laptop)

I came an hour later to a message that basically stated the upgrade failed, I clicked on restart.

Now it boots and on the upper left corner on the screen it says a bunch of stuff along "Mac Os Version Not Yet Set", then it changes into a message "Your computer restarted because of a problem."

What do I do?
 

Macinstall11

macrumors newbie
Original poster
Sep 20, 2018
23
0
Not nessesarily, it could still be there. You don’t have to reformat the drive.

Then again, are you saying that you don’t have a backup??
No I don't, my mistake I honestly didn't expect such thing to happen lol

Ok so I made it to Recovery System or something like that, what do I do? I don't want to reformat it
 

Macinstall11

macrumors newbie
Original poster
Sep 20, 2018
23
0
I used Command + R, to enter recovery mode, is that the correct one?
[doublepost=1542831995][/doublepost]
safe mode is our friend today
Ok I turned it off, how do I do safe mode?
[doublepost=1542832363][/doublepost]Doesn't allow me to enter safe mode, if I remove the HDD and connect it as externa drive can I access the files?
 

leman

macrumors G3
Oct 14, 2008
9,964
4,550
No I don't, my mistake I honestly didn't expect such thing to happen lol
Yeah, always do backups before installing large updates. In fact, scrap that, always do backups ;)

You can try the safe mode thing but I doubt it will work as it seems your base install has gone bad. You can reinstall macOS without erasing your data by following the instructions on this Apple support document: https://support.apple.com/en-us/HT201314
 

Macinstall11

macrumors newbie
Original poster
Sep 20, 2018
23
0
You can reinstall macOS without erasing your data.
I'm already on it, but I have this feeling it may fail once again.

If it does, could I just remove the drive and access it's files by connecting it as an external drive?

Would that work? I was going to put an SSD in it anyways, the files are the important thing