paulcrr Posted January 26, 2018 Share Posted January 26, 2018 I had High Sierra installed on my 7450, but I screwed my installation attempting to upgrade to 10.3.2. I tried to reinstall but had a lot of problems with the usb key, so I installed Sierra instead, it's a lot easier. Now I'm experimenting a new problem. I can work with Sierra installed all day long and all it's fine, but when I reboot I have this error in verbose mode: 'The volume Mac os Sierra could not be verified completely' And the boot fails. I have to repair the disk in single user mode with this command, that I found on another forum: fsck_hfs -Rc -d /dev/disk0s2 It works, but after a while the problem is again present. I think it's related with the previous installation of windows 10 on the ssd. I had a lot of problems tryng to remove windows partitions (4) with disk utility. I had to erase the disk with diskutil eraseDisk from terminal, but I suspect that something is wrong on file system. Or is my SSD near to the end? There is a way to clean the SSD in an effective way and get finally rid of this annoying issue? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted January 26, 2018 Moderators Share Posted January 26, 2018 There's probably a lot of other good apps out there that you could use, but personally I use PartedMagic. In it, there's an application call Secure Erase, that's what I use to wipe my SSD drive completely. I had used DiskWarrior.app, that had saved my system a few times when you encounter this error. "File System Check Exit Code 8" Both are paid apps but you can find free apps with google if you look hard enough. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted January 26, 2018 Administrators Share Posted January 26, 2018 I can recommend a Windows based tool called Low-level Format from HDDGuru. Does the job perfectly; you're back with a raw disk with no partition on it. http://hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/ Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted January 27, 2018 Administrators Share Posted January 27, 2018 funny I just worked on a MacBook Pro last week with the same issue. had to fsck -y -rc -d /dev/rdisk0s2 and usb installers where even having issues booting. it wound up having 1 defective memory stick and the hdd was on its death bed. I think the defective ram is what might have damaged the hdd. I replaced the ram then I installed a fresh os to a new ssd and then used migration assistant to transfer there data back to the latest os. they originally had el cap on that drive. Link to comment Share on other sites More sharing options...
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