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[Success] if stuck or reboot loop, Mojave upgrade to Catalina , fix apple id

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Aug 3, 2019
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Motherboard
IBM X3550 M4
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E5-2620 V2
Graphics
GT710 2G
[Success] if stuck or reboot loop, Mojave upgrade to Catalina
When directly upgrade to catalina, maybe stuck or reboot loop happens.

Try to boot to recovery mode and turn off sip.
1.Choose Utilities > Terminal.
2.Enter csrutil disable.
3,Enter reboot.

then you will have a big chance of boot into Catalina successfully!
I tried over one week, finally solve it.

if you have problem with apple id like attach files, there is only one way to fix.
Reinstall catalina under existing system.

Done.
 

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