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whiteshadoww

macrumors 6502
Original poster
Jul 14, 2008
372
129
Santa Monica, CA
Anyone know if this is the better way to try to fix the "Istallation Failed" error message many people are getting? If so where can I go to delete the file of Big Sur I have downloaded but not yet installed? Thanks.
 

ucfstudent386

macrumors newbie
Nov 12, 2020
2
0
nobody here knows the answer to this? I too would like to remove the cached download data as it does take of quite a bit of storage. I have 256gb of storage, my storage was 212gb before Big Sur, after Big Sur I'm down to 192gb.
 

Toledospod

macrumors newbie
Sep 5, 2020
26
24
Toledo, OH
Anyone know if this is the better way to try to fix the "Istallation Failed" error message many people are getting? If so where can I go to delete the file of Big Sur I have downloaded but not yet installed? Thanks.
Was going to suggest looking for the Install file in Applications, but then realized that it no longer does that since Software Update happens through System preferences. Wanted to delete this post but couldn't, so I just edited this. There was another thread here where someone posted a command you can run in Terminal to remove the cached file, not sure which thread though.

EDIT: Here's the post I found in another thread that might help:

 
Last edited:

whiteshadoww

macrumors 6502
Original poster
Jul 14, 2008
372
129
Santa Monica, CA
Somehow it al worked itself out when I kept trying to install. I actually had not downloaded it and was caught up in the issues Apple was facing. Installed now and Big Sur is absolutely gorgeous!
 
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meamacuser

macrumors newbie
Jul 28, 2021
1
0
For People still searching.
I found the location of the files on mojave, I don't know about other versions.
The location is in the root folder/Macintosh HD the folder named macOS Install data(/macOS\ Install\ data).
The folder cannot be deleted but a line of code kinda worked for me.
I don't know if this code works or not as it gives operation not permitted as output, but after running the code I got the space back(The permission is probably only applied to the top folder or the os itself deletes the file after a while).
DO NOT RUN THE CODE IF YOU DON'T KNOW ANYTHING ABOUT TERMINAL, I DO NOT TAKE ANY RESPONSIBILITY TO WHAT MIGHT HAPPEN.
sudo rm -rf /macOS\ Install\ data
 
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