I have followed the guide up to this step:
Type -s and hit enter
2. Wait for the text skim by until it stops. Then type /sbin/fsck fy and press enter
and I should be seeing "File system was modified"
When I enter this I get:
** Root file system
** Checking Non-journaled HFS Plus volume
Invalid extent entry
** Volume check failed.
/dev/rdisk1s1 (hfs) EXITED WITH SIGNAL 8
I've tried deleting the partition and installing iDeneb again and this hasn't helped. Could anyone advise?