Macbook Pro Can't Read a Blank Disk
- #1
iMac Pro 2017, using latest Mojave... this glitch just appeared. When a bare/empty CD or DVD is inserted in my external Pioneer BDR-XD05B, the bulldoze spins up just Mojave does not mountain it. It had been working fine and nothing was changed, IE, this bug came out of nowhere. I have tried to mount the disk in Disk Utility but the option is grayed out/unavailable. The system "sees" the drive in that there is an entry in Disk Utility, but nothing can be done with it there. Multiple disks have been tried, and the burner's cable has been tried using different sockets, to no avail. The mac has been examined recently past Apple and institute to be in perfect operating guild with their proprietary diagnostics. Accept scoured the forums just nothing works. Note that the burner works ordinarily when plugged into a Windows box. WTF, is this a Mojave bug?
- #2
I take noticed the same Mojave bug. I practise not accept a definite fix or workaround. I try to eject the media and reinsert the media and sometimes the Mac "sees" it. Sometimes it works to unplug the drive while the media in in the drive and then plug the drive into the Mac again. I accept tried to restart the Mac with the drive continued and the media already within the bulldoze. Usually something works eventually and the Mac mounts the media. I use a ASUS external Blu-ray. My Apple external superdrive does non seem to have this problem so far.
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- #three
What happens if you utilize a disc burning app?
In that location used to be a couple of free ones for the Mac:
- Burn down
- Simply Burns
It might be worth searching for/downloading them, so see if they can recognize/access the external drive.
EDIT:
I booted from my "Mojave examination SSD" (which is formatted in HFS+, I don't know whether this makes a deviation or not).
I was able to download both "Just Burns" and "Burn", and open both of them.
They "recognize the presence" of my external 3rd party BD/DVD/CD burner (a Samsung USB).
I didn't try really called-for or mounting any discs, however.
But I propose that the OP attempt one or both of these complimentary apps.
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- #4
I ran into this trouble a few weeks ago during my first attempt to burn down a disc with Mojave. It seems to be a bug in Mojave (maybe nobody at Apple has an optical drive to test disc called-for!). I followed another suggestion I found which is to get nether File and select "New Burn down Folder."
- #5
Blank discs don't mount. They can't. They don't have a filesystem on them. Finder can put them on the desktop so you lot can elevate and drop to them, if information technology's told to do so.
https://back up.apple.com/en-us/HT203336
- #6
I'm using an former apple DVD/CD external drive on my mini and just now stuck in Turbotax. It mounted and installed. I also was able to use the same DVD/CD drive to import music from a CD. I wonder if it could be your drive? They do get wonky. As well, old CDs and DVDs can go bad if they were cheap/poorly made. At present that I think about it, when I told iTunes to burn a music CD information technology worked but I exercise admit that I don't think it mounted the empty disk.
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- #8
Nosotros simply stuck the DVD/CD recorder player on our El Capitan car and it does indeed mountain a bulldoze. Then nosotros put it on my Mojave and it didn't mountain merely it did prompt to tape files on information technology. With a disk in the drive, I was able to right click on a file (or binder) and got the option to burn to disc.
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- #nine
Thanks to everyone for your input... I have tried several called-for apps and they "come across" the bare disk, but they ALL hang while trying to burn to information technology. That includes iTunes, Burn, But Burns, Toast, etc. The bulldoze will PLAY a CD. FWIW I've contacted Pioneer in case the drive is whack. Farther, I just tried burning via iTunes and it ejects the blank CD, so asks for a blank CD even though the disk in the bulldoze was blank.
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- #10
Follow-up after talking with Apple support: The issue is a known bug and a solution is being sought by their engineers. So.... since my drive used to work normally (and still does on a Windows PC), apparently the mac software (Mojave 10.14.ii) is the culprit. Was only able to get a disk to fire using Finder, selecting xi wav files (music), then burning -- information technology is PAINFULLY slow though... maybe 2x speed instead of the 24x that the bulldoze is capable of. AND that burning method results in wav files on the CD instead of standard music files. A senior advisor/tech said my case volition be added to other, similar cases for review, and that she would get dorsum to me next week.
- #11
OP:
Does the Pioneer burner that y'all're using take an input for an EXTERNAL ability supply block?
If so, take yous tried connecting information technology?
If you're running the bulldoze solely from USB power, maybe the Mac ins't supplying plenty "bus power" to get the job done.
EDIT:
The postal service BELOW this i makes a good point nearly USB hubs.
If yous have the drive connected "through a hub", try connecting information technology directly to the port on the Mac instead.
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- #12
OP:
Does the Pioneer burner that yous're using have an input for an EXTERNAL ability supply block?
If so, take you tried connecting it?If you're running the drive solely from USB ability, possibly the Mac ins't supplying enough "bus power" to get the job done.
That'south true. I tried to plug my Apple external DVD/CD into my usb powered hub and it complained that it had to be plugged directly into the mac. I then plugged information technology into the port closest to the edge of the back of the mini and it worked.
- #13
OP:
Does the Pioneer burner that you lot're using accept an input for an EXTERNAL power supply block? If so, accept yous tried connecting it? If you lot're running the drive solely from USB power, perhaps the Mac ins't supplying enough "bus power" to get the job done./QUOTE]
Yes, it does take a power socket simply I'll take to look for a suitable block... seems unlikely that an iMac Pro would accept insufficient bus power though...? Anyway I've tried the burner direct connected to the back of the mac and it does the aforementioned affair... ,AND, it used to burn OK! I haven't changed anything since information technology did work, except add some apps.
- #xiv
OP:
Some other thought:
Could you lot try rebooting in prophylactic fashion, and encounter if that changes annihilation?
(to kicking in safe mode, reboot and agree down the shift key continuously)
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- #xv
Thank you... tried safe mode, but the trouble is the same, the disc won't mount and the recording software, Fire v2.5.1, froze while attempting to get-go recording some audio files. I guess there is no workaround and this will take to await until Apple problems an OS update or fix......?
- #17
Can anyone recommend a proven burner for Mojave? The thing is, the Pioneer burner works fine on a Windows box. So I'd assume the problem has something to do with the mac drivers? Is the Apple "Lightning" burner worth the extra outlay?
- #eighteen
Do they withal sell the Apple external? Because we have ii of them and they work just fine on my new 2018 mini along with our 2013 iMac.
Nevermind, I see they still sell them for $79. Ours is NOT a lightning but regular USB that I plugged into the back of the Mac mini.
https://www.apple.com/shop/production/MD564LL/A/apple-usb-superdrive
- #nineteen
An update to Mojave (ten.xiv.iii) was just released! You lot may want to give that a try before purchasing a new external optical drive.
- #20
I oasis't establish an Air-conditioning adaptor for the Pioneer burner nonetheless, simply I did switch the USB plugs from a hub direct to the dorsum of the iMac Pro.... and it works now. Evidently you are right, information technology wasn't cartoon enough power via the hub. I don't trust the burn, though, as the audio CD I made equally a test contains a few bloops IE at the start of a vocal, it will blip slightly. Burning a DVD-ROM right now and information technology appears to be writing at a good clip. Thank you everyone for your input and suggestions.
- #21
garr. recently upgraded to Mojave on 2009 MacPro (otherwise upgraded). CD/DVD role player/writer doesn't seem to work at all. DVD not mounted or recognized in deejay util.
- #23
I have the official apple external cd/dvd payer/writer and apply information technology fine on my mojave 10.14.six mini.
Source: https://forums.macrumors.com/threads/external-optical-drive-will-not-mount-blank-disk.2165860/