I’ve just wanter to do some software updates on my 2015 Macbook Air, but that did not go well. during the installation proces I got an error that said “error with installation” this was while it was in the installation manager. The laptop shut down and has not worked since.. When I turn on the computer normaly I get promted tot the normal login screen, when I log in it loads and then I get an black screen with a white stop sign (circle with / in the middle).
I have tried several things:
Boot into safe mode
When I doe this and log in it goed into the installation manager again and I get the same error as before)
Boot into recovery mode
When I boot into recovery mode I get to the screen that says “Of wich user do you know the password” and the option of the two users I have to log in. I then try to log in into the main account but it keeps saying the password is wrong (while I type in the correct password). I’ve tried to log into the other user but same problem)
Boot into single user mode to fix the drive
When I type in
/sbin/fsck -yI get the error that there alredy is a drive mounted and therefor it cant perform the repairs on the disc.
I was so clever to not make a back up of my data, so is there an option to acces my data and put it on a external hard drive or to fix the macbook so I can use it again? Would a clean install from usb of maybe catalina or yosemite work without losing my data?