So I arrived home from school today and wanted to use my iMac, but somehow it wouldn't react. I pressed the power button until it shut down (or crashed...) and rebooted it. After rebooting everything seemed normal, but there was this error, that the keychain login couldn't be accessed. After googling and seeing, that the login keychain was missing in "Keychain Access", I decided to restore my Time Machine Backup from the evening before. After TM failed the first attempt (Shut down at 20%) I tried again, but somehow everything got fucked up.
I don't remember 100% exactly how everything happened, but the end result now is, that I do not see the HDD of my Fusion Drive CoreStorage. The SSD is visible in Disk Utility, but not the HDD. It also is not shown in "diskutil list" and not shown in Parted Magic. I also tried booting while holding the "D" key to enter Apple Hardware Test, but the result was, that everything is okay...
I'm really desperate right now, because I didn't had a very good mood when I came home and now the day is totally trash. I really appreciate every bit of help or information, that could help me..
If you have questions, don't hesitate to ask.
EDIT: - I tried to reset the SMC (unplug the iMac from power for 15 seconds) and it changed nothing.
The terminal outputs of
diskutil cs list,
gpt -r show disk0/disk1:
-bash-3.2# diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *121.3 GB disk0 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: Apple_partition_scheme *1.2 GB disk1 1: Apple_partition_map 30.7 KB disk1s1 2: Apple_HFS Mac OS X Base System 1.2 GB disk1s2 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: untitled *524.3 KB disk2 .... -bash-3.2# diskutil cs list No CoreStorage logical volume groups found -bash-3.2# gpt -r show disk0 start size index contents 0 1 PMBR 1 1 Pri GPT header 2 32 Pri GPT table 34 236978109 236978143 32 Sec GPT table 236978175 1 Sec GPT header -bash-3.2# gpt -r show disk1 start size index contents 0 2330500