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progress bar gets stuck while trying to reinstall. When starting in internal recovery -

MacBook Pro - when reinstalling OS X, it comes up with OS X Mountain Lion and wants to select dis but Install icon remains grey. How do you select disk?


MacBook Pro 15″, macOS 10.14

Posted on May 17, 2021 4:07 PM

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Question marked as Top-ranking reply

Posted on May 17, 2021 5:24 PM

NB>> NO working disks are required for proper operation of Internet Recovery. Your Mac creates more than 25 RAM disks to use temporarily.


In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.


Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]


If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.


The higher the number, the more obscure the problem.


If your battery was completely depleted, the Date&Time could have reverted to the default, which will not work. There is a terminal command to reset to current Internet Date&Time -- post back for assistance.

If your Mac starts up to error -1008F

https://support.apple.com/en-us/HT206989

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5 replies
Question marked as Top-ranking reply

May 17, 2021 5:24 PM in response to LYK

NB>> NO working disks are required for proper operation of Internet Recovery. Your Mac creates more than 25 RAM disks to use temporarily.


In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.


Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]


If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.


The higher the number, the more obscure the problem.


If your battery was completely depleted, the Date&Time could have reverted to the default, which will not work. There is a terminal command to reset to current Internet Date&Time -- post back for assistance.

If your Mac starts up to error -1008F

https://support.apple.com/en-us/HT206989

progress bar gets stuck while trying to reinstall. When starting in internal recovery -

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