Re: Trying to open db from 5.5.10 in new 5.5.17 install

[Rick James]

(This belongs in the Install forum.)

Drop down to a "terminal" or commandline interface in OSX. You will be in Un*x. Now find out the ownership on the files and directories. They need to be owned by "mysql".

THE FOLLOWING IS APPROXIMATE:
cd /..../mysql/
ls -ld # see who owns mysql and with what permissions. You want to see
drwxrwx--- mysql mysql
The initial drwx, and the first "mysql" are important.
ls -l # check the files there. Directories (such as "data") should have the same drwx and mysql.
ls -lR # This will spit out a lot of stuff -- all the files underneath (R=Recursive). Directories should be as above; files should be
-rw-rw---- mysql mysql

If they are owned by someone else, fix them:
cd /..../mysql/
chown -R mysql *
(Probably the permissions will be ok.)