MacOS – can’t add the present account to folder > Get Info > Sharing & Permissions on Macbook Pro

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I want to access MacBook Pro OS 10.11.15 files from a Windows 7. Can read files ok but writing causes permission problem.
ERROR AT WINDOWS IS: "You need permission to perform this action. You require permission from the computer's administrator to make changes to this file."

At MacBook, I cannot enable Read & Write for my MacBook account.

I select my hard disk.
Open Get Info > Sharing & Permissions.
But + button is grayed out.

So then I tried going to the folder I'm working with;
open Get Info > Sharing & Perm..;
my present account is not listed;
the + is enabled so I click it;
the list shows my present account, but disabled (grayed out)

THINGS I'VE TRIED SO FAR, THAT DIDN'T WORK:
opening Windows File Explorer with "run as administrator."
At Mac > Terminal window: set permission of root to read & write (chmod a+rw *)
Set permission of target folder to read & write:
cd to folder
chmod -Rf a+rw *
Turned off Mac and Windows Filewalls.

Best Answer

Solution: Mac > Sys Prefs > Sharing > File Sharing > Shared Folders: select Users > Everyone: changed from 'read' to 'Read & Write' fixes it.

BUT, the best solution is this: Leave 'Everyone' as 'Read only' or remove 'Everyone'.

Press [+] box and add Mac account that is same name as my current Windows account, and set it to read & write. What magic!

Related Solutions

How to fix a file that’s read-only despite showing correct permissions

Try ls -lO to see if any file flags are set. If it's locked (uchg flag), you can unlock it in either the Finder's Get Info window, or with chflags nouchg "Bad File". If some other flag is set, use chflags no<whatever> "Bad File" to clear it.

EDIT: The -O flag to la adds another column between the group and size of the files, listing file flags (if any). Note that flags are entirely separate from extended attributes (what -@ displays). Here's an example:

$ touch "Normal File" "Locked File" "Invisible, Append-only File"
$ chflags uchg "Locked File"
$ chflags uappnd,hidden "Invisible, Append-only File"
$ ls -l
total 0
-rw-r--r--@ 1 gordon  wheel  0 Feb  4 07:24 Invisible, Append-only File
-rw-r--r--  1 gordon  wheel  0 Feb  4 07:24 Locked File
-rw-r--r--  1 gordon  wheel  0 Feb  4 07:24 Normal File
$ ls -lO
total 0
-rw-r--r--@ 1 gordon  wheel  uappnd,hidden 0 Feb  4 07:24 Invisible, Append-only File
-rw-r--r--  1 gordon  wheel  uchg          0 Feb  4 07:24 Locked File
-rw-r--r--  1 gordon  wheel  -             0 Feb  4 07:24 Normal File

The uchg flag is what gets set if you check the "Locked" box in a file's Get Info window. BTW, the "hidden" flag only affects the Finder -- the only way to hide files from the command line is to put a . at the front of the filename.

Sharing and permission

Set your umask to 000 and reboot, then all files will save with full permissions for everyone. Here is the documentation http://support.apple.com/kb/ht2202

Best Answer

Related Solutions

How to fix a file that’s read-only despite showing correct permissions

Sharing and permission

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