![]() In the old days I would have tried sticking a paper clip in or some other option for a hard reboot, but there's nowhere to do that. I can sometimes get it to turn off by holding the power button, but turning it back on just gives me the endless cycle and whooshing again I can't get into Recovery mode. If you unmount and disconnect a disk and then reconnect the disk later, Disk Utility rebuilds the disk member automatically if. Disconnect the disk member that you want to unmount. I noticed that when I use the Quicklook feature to preview a video in any format, the process keeps active even when the Quicklook window was already closed. Click the Unmount button in the toolbar or beside the disk set name. erasing and creating failed could not unmount disk pdf If I preview any other file like PDF or JPG the disk can be ejected normally. Over and over on an endless cycle, just Apple and whoosh. In the Disk Utility app on your Mac, select the disk set that you want to unmount in the sidebar. and then the Apple logo appears again and the same thing happened. The Apple logo appears, followed briefly by the start of the progress bar - and then I hear this whooshing sound, like ocean surf or a heavy breath, and it turns back off again. Okay, I thought, I'll just restart and see what happens.Īnd now my brand new $1800 computer is completely bricked. I also tried to reinstall the US, and it wouldn't let me do that either (also because it was in use). But it wouldn't let me do that because it was in use. I thought that what I was supposed to do next was delete the Macintosh HD partition too. I thought "well, I'll just wipe the data so I can start clean, right?" I tried to followed instructions for a factory reset: went into Recovery Mode (cmd-R), entered Disk Utility, deleted the Macintosh HD-Data partition. And this appears to be where I made the REALLY big mistake. It did this in multiple ways, whether I was connected through WiFi or Ethernet, direct from the old Mac or through my Time Capsule. But then when Migration Assistant did start up again, it would keep freezing in the early stages, stalled and not progressing - never even got to the part where it estimated time remaining. Okay, fine, I have to go into Utilities to find Migration Assistant on the new computer. It wouldn't let me go back to the original state of Migration Assistant the users were already on the new computer. So I thought let's not do this right now, so I can still use the old computer, and cancelled it. You can also try following this article to format it if you have a Windows computer. Try formatting that to format the entire drive. In the side bar in Disk Utility you should now see something like '2TB Seagate Drive' or something like that. Everything was wokring great I started Migration Assistant to get it migrating over from my old computer and, after a little while for the preliminaries, it said it was going to be 6.5 hours. 5 Answers Sorted by: 1 Try going to Disk Utility then press View in the menu bar and 'Show All Devices'. Was so excited and delighted today to see my brand spanking new MacBook Air arrive (running Catalina). Okay all, I think I messed up really big time. ![]()
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