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Hi I have accidently deleted my HD data on my 2015 4k imac running catalina. when I try to repair using disc utility it says unable to unlock disc and will not repair it and i do not have a time machine backup. Can I get my system back up and running with the files as was without having to do a fresh install as i was in the middle of a new project.
iMac Line (2012 and Later)
Do you mean you erased the Macintosh HD - Data volume or that you deleted the volume in Disk Utility?
If the former, then the volume is still present. You can restore its content from your backup. However, if it's the latter, then you need to reinstall macOS. If you have no backup, then your data are gone, and you need to reinstall macOS.
Install macOS from Scratch
Do you mean you erased the Macintosh HD - Data volume or that you deleted the volume in Disk Utility?
If the former, then the volume is still present. You can restore its content from your backup. However, if it's the latter, then you need to reinstall macOS. If you have no backup, then your data are gone, and you need to reinstall macOS.
Install macOS from Scratch
If you removed the volume, then you have to install macOS from scratch. If the volume is still there, but erased, then you can restore it from a backup if you have one. Otherwise, you will have to install macOS from scratch. To do that, please follow the instructions from me earlier post.
yes i was wondering why my computer was running out of disk space and after investigating I saw Macintosh HD Data in disk utility. I thought it was just a duplicate of my normal drive and i could delete so i used the minus key in disk utility and deleted it!. now i know better and that catalina needs it. I have tried repairing the original macintosh HD in disk utility but when i do it says its unable to unlock disk. My system will not start now.
You do have a Time Machine backup don't you? If you do not you are about to learn a painful lesson on why backing up is absolutely critical. If you have a back, simply restart in the Recovery Partition (Command + R on Startup) then restore from your Time Machine backup. If you do not have a backup, you system and all of its applications and data are gone. If you happen to use iCould for your data, you may have preserved some of that.
accidently deleted macintosh HD data
