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Apple Computing Products:
macOS - Operating System
Time Machine backups - no permission
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<blockquote data-quote="MacInWin" data-source="post: 1850248" data-attributes="member: 396914"><p>Sly, from previous attempts, the name/password of the account are not the key to the permissions. Each user has an assigned system number, and that number is what is actually in the permissions system. And that number is somehow combined with the UUID of the Mac to create a unique identifier. So even if I have an account on one Mac, and exactly duplicate the name/password/access on a second Mac, files transferred from one machine to the other will have permissions issues, if the transfer is done through a mechanism that preserves security. And that is why Migration Assistant works if you use it BEFORE you create a new account but not so well if there is already an account created on the receiving system. Apparently MA has coding to allow it to establish the same user account on the target system as on the sending system, preserving security by setting the same password/access on the new as was set on the old. And as the files are migrated, the permissions are updated to the new account. </p><p></p><p>So, I don't think that will work. Drive formatting isn't critical, I suspect, as TM will change the format to the new as the files are restored. Now, a full drive restore would be a different thing, but the OP just wants these old files so the format of the drive should not matter.</p><p></p><p>I have banged my head on that particular challenge before and come up empty every time. About all you can do is to change permissions manually. Bob's suggestion of changing the permissions on the external drive is really risky as the files are not really files but TM backups and just about any action on those backups will break the database structure and render the whole thing unreadable. </p><p></p><p>What I recommend is to do the manual permissions change. They can be batched up into one folder and the change applied to all items in that folder to reduce the typing, but each file will need to be touched separately.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1850248, member: 396914"] Sly, from previous attempts, the name/password of the account are not the key to the permissions. Each user has an assigned system number, and that number is what is actually in the permissions system. And that number is somehow combined with the UUID of the Mac to create a unique identifier. So even if I have an account on one Mac, and exactly duplicate the name/password/access on a second Mac, files transferred from one machine to the other will have permissions issues, if the transfer is done through a mechanism that preserves security. And that is why Migration Assistant works if you use it BEFORE you create a new account but not so well if there is already an account created on the receiving system. Apparently MA has coding to allow it to establish the same user account on the target system as on the sending system, preserving security by setting the same password/access on the new as was set on the old. And as the files are migrated, the permissions are updated to the new account. So, I don't think that will work. Drive formatting isn't critical, I suspect, as TM will change the format to the new as the files are restored. Now, a full drive restore would be a different thing, but the OP just wants these old files so the format of the drive should not matter. I have banged my head on that particular challenge before and come up empty every time. About all you can do is to change permissions manually. Bob's suggestion of changing the permissions on the external drive is really risky as the files are not really files but TM backups and just about any action on those backups will break the database structure and render the whole thing unreadable. What I recommend is to do the manual permissions change. They can be batched up into one folder and the change applied to all items in that folder to reduce the typing, but each file will need to be touched separately. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Time Machine backups - no permission
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