I've been struggling with this one for a while and despite quite deep diving on google and apple sites haven't managed to find a solution.
All our music and photos were downloaded from our old windows based machine onto a hard drive and then loaded onto the Mac. For some reason the photos are a complete mess in terms of order, date taken etc. so the carefully laid plan to take them all off, sort out the hard drive so everything is as it should be and then consider reloading (might, might not).
However, the hard drive appears to be locked for any form of editing and no matter what I try it simply won't let me edit anything on the drive (Seagate 1 Tb). For example , there are some old, rubbish sketches files that can be deleted but it won't let me.
I've tried all the permissions and I'm logged on to the Mac as administrator.
Here's a screenshot of the drive's properties:

I can unlock the padlock (bottom right) with the admin password but I still can't make any changes. Double confused because it says I have read and write access! I know there are some Mac wizards on here so would value any help or guidance.
All our music and photos were downloaded from our old windows based machine onto a hard drive and then loaded onto the Mac. For some reason the photos are a complete mess in terms of order, date taken etc. so the carefully laid plan to take them all off, sort out the hard drive so everything is as it should be and then consider reloading (might, might not).
However, the hard drive appears to be locked for any form of editing and no matter what I try it simply won't let me edit anything on the drive (Seagate 1 Tb). For example , there are some old, rubbish sketches files that can be deleted but it won't let me.
I've tried all the permissions and I'm logged on to the Mac as administrator.
Here's a screenshot of the drive's properties:

I can unlock the padlock (bottom right) with the admin password but I still can't make any changes. Double confused because it says I have read and write access! I know there are some Mac wizards on here so would value any help or guidance.