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In tried the situation on OS volume shows as type 'FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF' But still getting error of resource busy. Even in tried diskutil umount disk0s2 still same error. Please help.

Nitin Upadhyay
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  • https://apple.stackexchange.com/questions/305706/os-volume-shows-as-type-ffffffff-ffff-ffff-ffff-ffffffffffff?newreg=0a972fe7b05b45deaf6d07026c5990a1 even tried the solution on this page but getting error of resource busy. – Nitin Upadhyay Jun 16 '20 at 22:42
  • How are you starting up? Are you using Internet Recovery mode, Recovery from the local disk, an external disk, or what? – Gordon Davisson Jun 17 '20 at 03:03
  • I'm using internet recovery mode and trying the method on the page in the above but when I'm trying to remove the disk0s2 using gpt command- gpt remove -i 2 disk0. I'm getting error that resource busy. I have tried diskutil umount disk0 also diskutil umount disk0s2 It says disk already unmounted – Nitin Upadhyay Jun 17 '20 at 10:26
  • Which version of Internet Recovery are you using? The can be determined from the output of the sw_vers command. If version 10.13 or higher, then you can use the -f option for the gpt command to do a shared lock. For example: gpt -f remove -i 2 disk0. Also, make sure the current working directory is not on drive0. – David Anderson Jun 17 '20 at 11:09
  • My recovery version was 10.12 but your commnd of gpt -f worked. Thank you very very much. – Nitin Upadhyay Jun 17 '20 at 18:12

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