My imac is 2013late intel 1T fusion (128G SSD + 1T HD) ,Now run catalina 10.15.5 and boot camp (100G win7). Time machine backup was 2014.2. When I Update OSX to 10.15.7 , before update do not backup again
since 8 years many updates with no problem. I estimate there are 450G at OSX, 60-80G at win71.After update OSX 10.15.5 to 10.15.7 ,restart , as logo appear for 10s, auto shut down.
2.command+R install OSX to HD, "installing"wait for 1 hour, "macOS not install on your computer. Storage system verify or repair failed.(-69716)". I tried two times same result. At that time I can boot into win7.
3.Command+option+R try install OS X, When choice where to install, No Macintosh HD，only Boot Camp, so I stop install.
4.Command+option+R , Run disk utility, I can see 3 partition:128G SSD + 1T MacintoshHD + 100G Boot Camp. But 1T MacintoshHD was grey colour. So I [first aid] [repair] in disk utility. It runs for a few second and copleted. But three partition combine into one partition, which name is MacintoshHD 1.12T , 700Mb + 20 file folder in it. I restart iMac both OSX and win7 died.
5. Command+option+R online install OSX catalina 10.15.7 to a 64G USB drive, start up iMac, run finder, i can see a empty 1T drive.
6.I use 64G USB drive to start iMac OSX catalina 10.15.7, run disk drill V4.1.206, there are lots of files such as pictures and mp3 in the 1T fusion drive. It needs 6 hours to scan so I abort.
Disk utility show:
diskutil list:
7.I use 64G USB drive to start iMac OSX catalina 10.15.7, run homebrew , run testdisk, deep search need a long time so I abort deep search.
testdisk log file:
https://drive.google.com/file/d/17MWggG ... sp=sharing
I think if 3 partition come back , maybe I can see files when I use USB drive start iMac. If it's possible, I do not need run disk drill to rescue data.
what's the next move?
Thank you