Hi, I’ve been trying to update my Macbook Pro (late 2011) to High Sierra, coming from El Capitan. My hard drive is a 512 Gb Crucial MX100 SSD. The process went fine and I was using my computer again when it couldn’t open Preview, so I restarted the machine. I was never able to boot on my regular partition: there is a recurrent error message that says that it can’t access the files, and so it restarts on the install/boot partition until the message comes again. In Recovery mode (Cmd+r at startup), Trying to Repair the disk with SOS bring the following error: « fsroot tree is invalid », althought it can see the total size of the disk and also the size of space that is occupied by data. I assume it’s the transition to APFS that has messed up something. I tried to mount the disk into an enclosure and to read it within Gparted in Linux as an external drive: it sees it but doesn’t detect the file system. I’m quite concerned by the issue as I have a big folder of my studio projects that I forgot to backup - the rest is OK... Any hint on a possible fix before going to see the professionals? Thanks a lot!
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