If anyone have an idea, i’m ready to try almost anything to recover / reinstall it from scratch. I even have (3 month old but still) full backup of the IMac on an external device.Īnd this update doe snot allow me to use it in anyway. No lab is available for us right now, as we can’t go out anywhere far due to the Corona situation in my country. This Device is one year old, in brand new condition. The worst thing that could happen with an IMac these days just happened. ![]() i don’t think that it’s a coincidence that the SSD started to have it’s first “issues” right after this update. So to sum up, i’m almost 100% sure that this is not an original, 1TB, one year old SSD issue. In dmsg i saw that the “device is un readable…”ĭiagnostic (holding D and SHIFT + D) also does not work.Ĭontacted Apple support which after hearing all the above, simply said: “go to a lab”. Tried the disk utility and noticed that the Macintosh HD volume and the DATA volume can not be erased, as the system can’t unmount them.Īlso i started the IMac with external USB disk, and got the same results, (can’t unmount)Īlso tried to force unmount from terminal, which also hangs forever and does not work. Now the OS would not start, recovery boot didn’t help, safe mode does not work, I left it for more than 35Hrs and it didn’t progress at all. The update to 10.15.7 didn’t complete and hang on “Estimating remaining time…” This update broke my Imac 2019 model which run catalina and all minor updates since it came out. If you haven’t updated yet, you might like to hold off for now, as Apple may well replaced one or more of them. I’ll be taking a look at these updates in more detail on Monday 28. However 10.15.7 isn’t without its own glitches. More severe issues can be resolved by rolling back to a pre-update snapshot (if you’re running Time Machine), by re-installing Mojave, or by upgrading to Catalina (which is being suggested by Apple). Minor problems after any of these updates can be resolved by restarting in Safe mode, then after a couple of minutes restarting normally. ![]() These are detailed here by Mr Macintosh, and extensively across other Mac sites. These range from minor, such as warnings when running softwareupdate, to major problems with memory usage and impaired performance. Postscript: Many users are reporting problems following installation of the initial release of Mojave Security Update 2020-005. I have now analysed the changes brought in 10.15.7, which you can read about in detail here.
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