Changing drives from Read Only?

[hempomatic]

I have an internal 2 TB drive from a computer that failed (a CPU failure). When I plug it in to my current computer I can read it, and I can use the files on it. I'm unable to write to it however. I checked on Disk Utility and it shows the "Mount Point (read only) " Is there a way to change that without losing the data that is currently on the drive? Attached is a screen capture.

 

[ferrarr]

I don't think that's possible with APFS formatted drives. Use another (multiple?) drive temporarily to copy the important data to the other drive(s), then copy it back after you reformat it.

 

[Slydude]

The following may not work in all cases but has worked for me several times.
1. Select the drive you are having issues with and choose Get Info from the File menu (command I).
2. Expand the Sharing and permissions section of the sheet that appears.
3. There should be an option to ignore permissions on that drive. Choose that option.

You will be asked for an administrator password during this process.

If the drive is experiencing errors when you run First Aid reformatting is probably the better option.

 

[hempomatic]

The following may not work in all cases but has worked for me several times.
1. Select the drive you are having issues with and choose Get Info from the File menu (command I).
2. Expand the Sharing and permissions section of the sheet that appears.
3. There should be an option to ignore permissions on that drive. Choose that option.

You will be asked for an administrator password during this process.

If the drive is experiencing errors when you run First Aid reformatting is probably the better option.

I've run into this several times lately. I go to make a change, after unlocking it with my password, It says I don't have the necessary permission. If I don't, who the heck does? It's only me. I'm the admin, no one else uses this computer.

 

[Slydude]

If you haven't already done so, run Disk First Aid and repair any errors. If the problem persists then I think the suggestion to reformat might be best.

 

[hempomatic]

Already ran First Aid, no issues. Too much data to lose, so formatting is not an option. Not sure where I can stash 900 gig of data while I reformat the drive anyway.

I just can't understand why I don't have permission. Is there a level ABOVE admin?

Thanks guys.

 

[ferrarr]

It's only me. I'm the admin, no one else uses this computer.

It has nothing to do with the new machine. It has to do with the security built into APFS. You can only read, until you reformat the drive.
So, copy all the data you want off of that drive.
Reformat that drive.
Put the data back onto that drive.

 

[IWT]

formatting is not an option.

Understood completely.

So how about following Bob's (ferrarr) suggestion of copying the data to another EHD - #2?

When done and confirmed, reformat the Internal drive and copy it back?

Sounds sensible?

Ian

 

[hempomatic]

Understood completely.

So how about following Bob's (ferrarr) suggestion of copying the data to another EHD - #2?

When done and confirmed, reformat the Internal drive and copy it back?

Sounds sensible?

Ian

I think I'll try that. Thanks.