SSD's switched to read only, refuses to let me change them back!

[Upgrader]

I have two PCIe SSD's in my cMP - a boot drive (OWC Accelsior, slot 2) and a media drive (SM951, slot 4).

I installed Mojave about a week ago - everything has been fine until now.

I restarted the machine yesterday and shortly afterwards found that the project I was working on couldn't be saved to the media drive.

Checked permissions on both drives and found that they're both now read only.

Please see the attached pics: Media drive says it's read only but the three owners are all set to read and write. System drive says it's read only but the owners are a mix of read and write and read only. When I try to change permissions it tells me I don't have permission! I'm set up as an administrator.

I can choose to ignore ownership on the media drive but it makes no difference.

All pretty confusing - does anybody recognise this or know a fix? Is it a Mojave bug?

Thanks.

 

[rpmurray]

Have you tried using Disk Utility to run First Aid on the drives?

I'd suggest that you make backups of both drives before attempting a repair. Apple's QA has been getting worse with every new OS with Mohave and APSF both being a bag of hurt. So it would be prudent to have backups in case both drives get totally hosed by Apple's latest screw-ups.

 

[Upgrader]

Have you tried using Disk Utility to run First Aid on the drives?

I'd suggest that you make backups of both drives before attempting a repair. Apple's QA has been getting worse with every new OS with Mohave and APSF both being a bag of hurt. So it would be prudent to have backups in case both drives get totally hosed by Apple's latest screw-ups.

I’ve tried running first aid but to no avail. Maybe the old ‘repair permissions’ option would’ve fixed this but that option no longer exists. I also have multiple back ups.

 

[krakman]

Same thing happened to my spinner HD which was formatted as APFS and used as a cloned backup of my Mojave SSD.

Only solution I found was to format the drive as HFS.

But now get Info still says read only but i can write to it???

I'm using the 10.14.1 beta....might just be a bug?

 

[bookemdano]

Never heard of anything like this before. You have the two SSDs on different controllers?

One thing that jumps out at me though is you're using an OWC SSD. I've heard enough horror stories about their SSDs that I would never put critical data on one. It may not be related to your issue, but I think it's a possibility worth exploring.

Can you just restore from one of your backups made prior to this happening?

 

[Upgrader]

Same thing happened to my spinner HD which was formatted as APFS and used as a cloned backup of my Mojave SSD.

Only solution I found was to format the drive as HFS. The media drive is already HFS so it won't fix that one.

But now get Info still says read only but i can write to it???

I'm using the 10.14.1 beta....might just be a bug?

It's baffling I agree. It does sound bug-like but I'd imagine it would be much more widespread if it was. I might switch the format back to HFS.
[doublepost=1540057349][/doublepost]

Never heard of anything like this before. You have the two SSDs on different controllers?

One thing that jumps out at me though is you're using an OWC SSD. I've heard enough horror stories about their SSDs that I would never put critical data on one. It may not be related to your issue, but I think it's a possibility worth exploring.

Can you just restore from one of your backups made prior to this happening?

Yep, separate lanes - OWC drive is slot 2 (boot drive) and the SM951 (media drive) is on a Lycom DT120 in slot 4. I've also read the horror stories re OWC but I've not experienced them myself - it's always performed ok for me though I am looking forward to getting an NVMe SSD to replace it.

Although both drives say read only I can still write to the system drive ok. I can't write to the media drive. I was hoping there might be a fix before resorting to a drive restore but I may try that anyway.
[doublepost=1540058593][/doublepost]Ok so I tried selecting 'ignore ownership on this volume' on the SM951 media drive. I restarted and now everything is working normally again. Feels pretty bug-like to me.

 

[Ludacrisvp]

What does this show from terminal:
# ls -l /Volumes

 

[Upgrader]

What does this show from terminal:
# ls -l /Volumes

Hi - can you explain what this command does please? I'm reluctant to enter commands into terminal that I know nothing about.

 

[bookemdano]

Don't worry. It's safe to run it. That command lists details about every drive on your system (/Volumes is the directory where that info is stored). Edit: and you're smart to be skeptical. Always good to know what exactly a command is supposed to do before you run it!

 

[Upgrader]

Don't worry. It's safe to run it. That command lists details about every drive on your system (/Volumes is the directory where that info is stored). Edit: and you're smart to be skeptical. Always good to know what exactly a command is supposed to do before you run it!

Cheers, it shows this:

 

[Thomas J]

In the get info view, unlock it and click the box ignore ownership on this volume.

 

[Upgrader]

In the get info view, unlock it and click the box ignore ownership on this volume.

I already tried this, restarted and everything is now working normally again. I mentioned this above but it got merged into another post so it's easy to miss.

 

[Thomas J]

Ok sorry, I missed it

 

[Upgrader]

My SM951 media drive is still HFS+ - does anyone know if it's recommend to reformat it as APFS?

 

[Sko]

A shot in the dark, but maybe your CMOS battery is depleted. macOS won't let you change anything on a drive if it finds that the system date isn't correct.

 

[bookemdano]

I don't think there is any compelling reason to convert a non-system drive to APFS. I'd leave it be, myself.

 

[Upgrader]

A shot in the dark, but maybe your CMOS battery is depleted. macOS won't let you change anything on a drive if it finds that the system date isn't correct.

The system usually alerts you when that battery runs low doesn't it?

 

[Ludacrisvp]

The system usually alerts you when that battery runs low doesn't it?

Not for a cmos battery. This is for bios.
[doublepost=1540070435][/doublepost]

A shot in the dark, but maybe your CMOS battery is depleted. macOS won't let you change anything on a drive if it finds that the system date isn't correct.

I’ve never heard of this. What it sometimes doesn’t let you do is install programs like MacOS updates due to certificate signing.