Macintosh for the detailed testing and troubleshooting that was required to track down this issue. In the end, the morals of the story are to check for sufficient free space before upgrading to Big Sur and to maintain good backups, just as Joe Kissell recommends in Take Control of Big Sur. I don’t fully understand his explanation here, but it seems to revolve around how Catalina and Big Sur prompt for the account password before entering macOS Recovery, whereas the older macOS versions prompt when the troubled Mac in Target Disk Mode is connected.Īlthough this problem is unusual, I’ve received reports from several Apple consultants whose clients have found themselves in such a situation. Macintosh says that the Target Disk Mode approach is the only one that will work, with the caveat that the host Mac must be running 10.13 High Sierra or 10.14 Mojave. FileVault enabled: For those with FileVault enabled, Mr.If you have a second Mac and appropriate cabling, connect the two Macs, boot the troubled Mac into Target Disk Mode, and then delete files from that Mac’s internal drive using the Finder on the host Mac.For Macs without a T2 chip, you should be able to boot from an external hard drive or a USB flash drive and then delete files in the Finder once the Mac is running.Be careful when deleting from the command line! ![]()
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