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invalid sector

  1. J

    Please help! Corrupt External HDD in MSDOS format not mounting osX Catalina after black screen crash, how do I use terminal fsck or diskutil?

    Hello I think my partition map is corrupted? can anyone help with my hard drive and using fsck or similar as disk utility cannot repair and I have tried fsck but need help with the process of it And to see if disk is being held by fsck_msdos or fsck_exfat command - tried ps aux | grep to see...
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