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howdytom

macrumors member
Mar 29, 2020
53
21
I have successfully installed the macOS Mojave Security Update 2021-003 on a MacPro5,1. It’s been running fine for 2 days without any issues.
 

sergeregina

macrumors newbie
Dec 30, 2017
3
0
Actually may previous post (long boot problem >5 minutes) was about 2021-003 (not 2020-003).

After 2 additional tries (second try after "clean install" of Mojave), I finally was able to make it work but I dont understand why it failed twice. Actually the two first tries I installed Mojave Security Update 2021-003 + Additional Update and Safari 14 together. Maybee they should be installed separately. If I have some time I'll try the additional update & safari updates later.

Config : MacPro 5.1 ROM : 144.0.0.0.0 / Radeon RX 580 8 Go, Samsung 1TO SSD(s), 32GB RAM, 2 x 3,46 GHz 6-Core Intel Xeon.

If it can help. Other more recent macs (Air, etc). have been updated without a glitch...
 
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