How do I get back to you to rate your advice once I have done all this and restarted?
I followed your second option, having no CD or DVD
Fine until I got to point where my username was listed. But it would not accept my answer to Type: passwd username though I tried every interpretation of the instruction I could think of. Was always told it was a processing error.
line 11 - you will see your username listed there
This worked OK. There was not only my username but also my password ***** screen
(both of which I had forgotten)
line 12 - Type: passwd username
I did this and got a processing error message.
I tried entering the info I'd been given several times, and even in different formats but got the same error.
I went back to line 1 - Turn your Mac off and started again. I did this three times several times with the same result.
Interestingly one of the computer problems had sorted itself - I could open files previously closed to me, but the keychain still won't accept my previous password (i.e. the one I discovered during this process)
I assume the username was the first of the words that appeared on screen and that I only put in the actual word passwd spelt like that rather than the old password ***** now know??
I am fairly certain I typed it in correctly, but when I tried it again to check, it doesn't even get as far as line 4. Command s types lines of sssss and error messages such as single user boot -- fsck not done.
I really have tried many times, and left computer turned off for long periods to see if it recovered, but no.
I previously did the command s with no error messages until line 12 or 13.
No idea why I am getting the error messages so much earlier. I tried ignoring them and continuing, but then the computer didn't recognise anything as a valid command. What do I do now?
I've got an external hard disk for backup, and assume this will have all my data on it - but will it be safe to load it back on the iMac after reinstall?
I have an external hard disk, and assume all my data is saved on it - but will it be safe to load that after reinstall?