Odd Mountpoint

Posted on
Wed Jun 12, 2019 5:55 am
DaveL17 offline
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Location: Chicago, IL, USA

Odd Mountpoint

Within my Volumes there is a preboot folder that I suspect is the result of an OS upgrade, that I can't seem to find any authoritative information on. I find lots of stuff that looks like conjecture and much of it is conflicting. For example, one source says that the Mac won't boot if this folder is deleted, and another says that it's cruft and can be deleted without any effect. The machine is on Mojave upgrade path (all the way from Mountain Lion I believe).

Code: Select all
/Volumes/Preboot/[long string here]/var/db/AdminUserRecoveryInfo.plist

The anonymized plist file. There is a reference for the admin user and one general user (there is only one user defined on this system)
Code: Select all
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
   <key>admin</key>
   <dict>
      <key>AuthenticationAuthority</key>
      <array>
         <string>;ShadowHash;HASHLIST:&lt;SALTED-SHA512-PBKDF2&gt;</string>
         <string>;Kerberosv5;;admin@[long string here]</string>
      </array>
      <key>GeneratedUID</key>
      <string>[UID here]</string>
   </dict>
   <key>[username]</key>
   <dict>
      <key>AuthenticationAuthority</key>
      <array>
         <string>;ShadowHash;HASHLIST:&lt;SALTED-SHA512-PBKDF2&gt;</string>
         <string>;Kerberosv5;;[username]@[long string here]</string>
      </array>
      <key>GeneratedUID</key>
      <string>[UID here]</string>
   </dict>
</dict>
</plist>
Can anyone with deep knowledge of OSX explain what the purpose of this plist is and whether it's anything to be concerned about? Can I get rid of it?

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