![]() Ran first aid again and again… no errors. Beyond slow…glacial… and I get 800 Mbps download speed. After many hours I get a desktop and it functions terribly. I deleted, erased, renamed, reformatted APFS, and did a fresh install of Catalina. We are in the middle of COVID quarantine and tomorrow I have to work.Ĭatalina install consistently fails After the most recent security upgrade totally crashed my iMac, I made several attempts to recover using all the available tools, delete PRAM, safe mode which didn’t work at all, time machine which didn’t work at all, recovery mode which allowed me to finally reformat. Time Machine finishes itself and I’m still going back to recovery mode.Īny clue? Guys please help - I got stuck :(. Cannot start “safe mode” - there is icon of folder with question mark.Īpple diagnostic utility says that everything is alright.įinally I’ve tried to do Time Machine recovery from backup - still nothing. ![]() I’ve tried to reset NVRAM and PRAM - no effect. Every time I’ve finished on recovery mode. I’ve tried to reinstall system twice, but no effect. I cannot override first aid from terminal. I’ve tried first aid option on both partitions but the process fails on every attempt, dialog box is talking about corrupted file structure in fusion drive (fusion data structure are invalid): “fusion_mid_tree: btn: invalid o_cksum” Disk structure and amount of space on Macintosh HD and Macintosh HD - Data was ok. After update I’ve been brought to Recovery mode and my Mac asked me to plug Magic Mouse and keyboard. Unfortunately I’ve made an attempt to update to Catalina 10.15.4.
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