![]() ![]() I cannot change the setting because the computer has no administrator account. Tried to install macOS from bootable USB memory (created following these instructions ), which fails because external boot is disallowed in Startup Security Utility. Reset NVRAM and SMC, which had no effect. In recovery mode terminal, I've ran following commandsĬan't access "efi-boot-device" NVRAM variable. In addition to internal Apple SSD, there is a macOS Base System Disk Image. Started Mac in recovery mode and ran First Aid on the disk, which says that the volume appears to be OK. No disks are showing, only option is internet recovery, which fails. Started Mac to startup manager (press ⌥ in startup). The computer shows question mark folder when it's started. The computer's disk has since been erased and all user accounts have been lost. After the update the computer would not start and recovery attempts failed. Apparently, problems with the computer started initially when update from Catalina to Big Sur failed. I'm trying to reinstall macOS to a seriously messed up MacBook Pro 13" 2018 model. Reinstall macOS to Mac without existing macOS, admin account & startup disk Hi, Your tips, advice and help is highly appreciated :) as I am not very technically savvy. ![]() The volume “Macintosh HD” on disk2s5 count be unmounted because it is in use by process 725 (kextcache) ![]() Press a key or wait a few seconds to continue starting up”.Ī new try to erase “Macintosh HD” and creating “Macintosh HD” failed with the following alert:Įrasing “Macintosh HD” disk2s5) and creating Macintosh HD” “Your computer restarted because of a problem. Now I am stuck in the Disk Utility mode as I cannot move out from disk utility mode by restarting my Mac due to the fact that the following alert starts refreshing in a loop (on a black screen, white collar text on top of white colour "turn on/off" sign) without disappearing away: The repair cannot be performed because one or more volumes are mounted. : (-69565)įollowed by similar alert on running first aid on “Container disk2”: The repair cannot be performed because on or more volumes are mounted. Restoring the original state found as mounted Running first aid on “Macintosh HD” disk2s5 I tried running 1st aid on Macintosh HD with the following alert: This latter process was unfortunately terminated with technical problem and the alert: “.could not unmount disc. I then continued to erase "Macintosh HD” as instructed. I have discovered multiple SW problems after I started the process of turning my MacBook Pro into original factory settings with my Mac.įollowing Apple’s instructions (), I used macOS Utilities tool to 1st erase ”Macintosh HD - Data”. I wish to turn my Mac OS 10.15.1 (19B88) MacBook Pro computer into factory settings, but I have run into technical problems. The reason for starting the process is that I ran out of memory in my Mac, even I have deleted all my personal files and folders from my Mac. Problem reformatting Mac OS 10.15.1 (19B88) MacBook Pro Problem (re-)starting up Mac OS 10.15.1 (19B88) MacBook Pro I cannot unmount disk0s2 "Macintosh HD" and without unmounting I cannot use "diskutil secureErase". The internal disk is listed as /dev/disk0, the Macintosh HD partition is /dev/disk0s2 Launchctl load /System/Library/LaunchDaemons/ ![]() The problem is that I cannot unmount the /dev/disk0 I read the diskutil manual on Apple website, and I would like to perform a "diskutil secureErase" to the entire disk, with 7 passages DoD wiping method in order to make irrecoverable all my data. However, it starts in single user mode: CMD+S at the startup, with command line interface. I cannot run the recovery mode D or ALT+D (recovery mode via internet) because iMac loops and cannot load even the recovery interface. I would like to wipe out the entire hard drive in order to sell the iMac as broken computer for spare parts. My local Apple Store refused to apply another replacement because the replacement program is terminated. Unfortunately even the replacement unit was faulty after 3 years. In 2014 the AMD videocard was replaced during the Apple official AMD 6970M replacement program. It cannot start up properly, the boot-up stops right after the white display with grey Apple logo and then the iMac starts looping. I have an iMac mid 2011 with faulty AMD 6970M 2 GB videocard. ![]()
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