Hi all, Earlier today my 2012 Macbook pro (750GB HDD) was working fine but suddenly got extremely slow, so I decided to do a reboot. The reboot didn't succeed, after I filled in my password the apple logo showed up for a while, then I was put back to the password screen again (time after time). Tried rebooting again a couple of times, then also the 'prohibited' sing started to appear after the login screen, together with the apple logo, but still was stuck. I read that it may be due to OS disk not being found, so I started up in recovery mode (cmd+r), and using disk utility I found that the HDD of 749.3 GB only had 32mb free space left (I only have ~350 GB of data, so something is wrong there). I did scan/repair a couple of times, reboot again, but still stuck after login screen. Now also the '?-folder' sign started to appear. Next, I got my external HDD to make a Timemachine reset via Disk Utility in recovery mode, took a couple of hours but it finished. However, still same story when logging in, and still the HDD is completely full (strange after resetting an old Timemachine backup?) Then I tried to erase the disk before giving the Timemachine backup another go, again via Disk Utility in recovery mode. There are 4 disks shown (and a dvd drive). The upper one is called Macintosh HD, and is not eraseable, the second one with the same name was able to be erased, so I did. Below that it shows the boot disk partitions I think? Just a few GB which can't be erased? But the strange thing is, after the erase of Macintosh HD (2nd disk) and selecting the Timemachine backup via Disk Utility in recovery mode, it refuses to accept my password! Which I used 2 hours ago for the first Timemachine attempt... Now I'm starting to get a bit worried, is my Timemachine (also) corrupted? Is there any way to fix this situation? Currently I'm waiting for a recovery mode startup, hopefully it will accept my timemachine PW this time.. Sorry for the long story! Thx in advance --- Post Merged, Jun 14, 2018 --- Strange, after the last recovery mode boot it did accept my TM password. However, the internal HDD does not show up anymore.. Not in the Disk Utility tool, and not in the TM restore tool (when searching for destination disks to put the TM restore, it does not find any disks). Disk Utility does still show the Disk0/Mac OS X base system disks.. Is there any way to restore the TM backup?