Disk utility won't erase a dvd-rw

i want to erase my dvd-rw and when i go to disk utility and click "completely erase" the status bar says "preparing the drive" and then "waiting for drive" and right after that a window pops up saying that i've just inserted a blank dvd, and it asks what option i want. (eject, ignore, ok;action) and the dvd doesn't get erased. any help is greatly appreciated

I am experiencing a similar problem. I have recently erased several CD RWs with Toast & Firestarter. Suddenly yesterday I try to burn a disc, but the only option showing in Disk Utility under Optiarc is The Erase section, stating "Waiting For A Disc To Be Inserted". (No First Aid, Raid, Partition sectors showing). Now, I have just erased about 10 discs but the Erase section is static. It's like it's on a loop, expecting all discs loaded to be erased. Normal CDs are rejected, but DVDs are just fine. Restarting doesn't help. Is this something that you were experiencing and have you found an answer yet.

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Trouble with Fantom drive / Disk Utility won't erase it

Until a few days ago, i had no problems with my Fantom 160 GB titanium drive. Then when i connected it to a freind's Mac, it started out OK fora few minutes, when my brother was playing around with creating an air network between the friend's computer, to which my fantom drive was attached, and my laptop. When i tried to activate the network, the Mac semi froze for a few minutes and just didn't do anything. when it started to move again, the fantom drive was showing 0 files in the finder window, and wouldn't eject.
So i turned it off and back on, which was probably a mistake; then the drive gave a message that it was unreadable.
Since i wouldn't lose too much data, i had no problem reinitializing the drive, but Disk Utility kept telling me that the erase failed.
When i try to verify the drive in Disk Utility, i get the error -9972: "Error: The underlying task reported failure on exit (-9972)"
This is the same text i get when i try to erase the drive, but without the error number.
I see at http://docs.info.apple.com/article.html?artnum=302411 that this message this is bad, as Disk Utility cannot fix it.
Currently, the drive does not show up on the desktop, but it does show up in Disk Utilities. It stopped telling me the drive is unreadable.
Is this drive beyond help?

Dale,
that post is helpful, but I'm not sure how much it applies to me. My ibook shows no problems when not connected to the firewire drive, while the firewire drive started acting up when connected to another computer. i have also not been able to get the firewire drive to work on two other macs. The Fantom drive showed up as unreadable on all three, and Disk Utilities on all 3 computers failed to erase the firewire drive. By brother's had Disk Warrior & it wasn't able to do anything for the fantom drive, either.

Disk Utility won't erase iMac drive

I have a late 2012 27" iMac.
I was taking it to the Apple Store to fix The Mechanism™ broke. (The tilt hinge). As I knew fixing it would entail leaving the iMac there for several days, I cloned my drive and erased the iMac.
HOWEVER, when trying to do it, both form a USB install drive I set up AND from the Recovery Partition, Disk Utility would fail to erase the drive. It would quit and go back to the install drive directory.
I then booted back to the regular drive, manually dragged most of the stuff to the trash and emptied it. I then went back to the USB drive and tried one last time.
This time, the drive reformatted like it was supposed to. I tried again, it worked again.
I loaded Mavericks on, and packed the iMac up and went to the store (where it is now).
The "Genius" had no idea why the erasing didn't work earlier, and since things now did work, I couldn't replicate. They're diagnostic scan showed everything was good.
It's the 1TB + Fusion drive.
BEFORE I manually erased everything, there was around 120 gb free on the drive. After there was 900+gb free.
Anyone seen anything like this? Have ideas what was happening?

Kappy wrote:
There are no free utilities for defragmenting a drive. Only the cloning I described is free.
Here's what you should do:
To resize the drive do the following:
1. Open Disk Utility and select the drive entry (mfgr.'s ID and size) from the left side list.
2. Click on the Partition tab in the DU main window. You should see the graphical sizing window showing the existing partitions. A portion may appear as a blue rectangle representing the used space on a partition.
3. In the lower right corner of the sizing rectangle for each partition is a resizing gadget. Select it with the mouse and move the bottom of the rectangle upwards until you have reduced the existing partition enough to create the desired new volume's size. The space below the resized partition will appear gray. Click on the Apply button and wait until the process has completed. +(Note: You can only make a partition smaller in order to create new free space.)+
4. Click on the [+] button below the sizing window to add a new partition in the gray space you freed up. Give the new volume a name, if you wish, then click on the Apply button. Wait until the process has completed.
You should now have a new volume on the drive.
That's what I did and it didn't work.

Disk utility won't let me erase my hard drive

I'm giving my old PowerBook to a family member and want to erase the HD and reinstall 10.5.4 fresh. I opened Disk Utility and selected Erase and the drive bu the Erase... button is not available (transparent). How do I do this?

That or another Mac OS X installation.
(58310)

Disk Utility won't partition ext. drive

Hi everyone,
I would like to split my external MyBook Pro drive in two so I can keep Time machine B/ups separate, but Disk utility keeps informing me that there is not enough space! I only want approx 80gb of the remaining 105gb. Where am I going wrong. Any help would be much appreciated. Thanks.

Are you willing to erase the contents on the external hard drive? Disk utility won't subdivide existing space, you have to do the entire drive at once. However, there are utilities (I believe they are purchase/commercial only) that will sub partition an existing disk partition.

Are my photos completely gone if i went into disk utility and clicked erase, or can i recover them?

i wanted to put my macbook pro back to factory settings and re installl the disk. so i went into disk utility and clicked erase, after that i realized i did not put my pictures on my external drive and now i'm wonder even though i pushed erase in disk utility for my HD are my photos just gone off my computer and hidden in files that i have to recover. because i tried a few softwares that i downloaded and i found some of my photos but couldnt get them cause the software was a demo.
main question is even though i clicked erase HD and my pictures aren't on when i re install the mac DVD can i still recover them somehow??

I'm assuming that you were booted from the Mac install disk or recovery partition when you clicked Erase? (It's impossible to erase a disk you're booted from, at least using Disk Utility).
Do you have a backup of your computer, perhaps using Time Machine?
If not, and you still want to recover your pictures, first, STOP. Do not re-install Mac OS X. Installing the system and applications will overwrite your hard drive and potentially permanently lose your deleted files.
The only way you can retrieve your files is by using data recovery software such as Data Rescue. No, it's not cheap, but you have to decide what your photos are worth to you. You would need to run it from another Mac, ideally, and connect to your Mac using target mode.
If you're uncomfortable with that, you should seek a local reputable Mac/data recovery consultant.
The utility kaz-k points you to is not a solution to your problem. It's an Unerase Trash program.
Matt

My disk utility refuses to erase my hard drive

I've been trying for a few years to find some way to reset my mac to factory settings. Every last thing I've tried has failed. I was hoping the disk utility thing to erase it would work but the erase button never lets me to click on it

If you previously encrypted your hard drive (FileVault2) then your drive was enrolled in apple's CoreStorage format. If so, diskutility won't let you perform certain operations, and you'd first need to use advanced diskutil options from the command line ( $ diskutil cs delete ... ) to trash the CoreStorage volume.

Disk Utility failure to erase/initialize

I have a 1 TB WD MyBook Studio Edition. I sent this drive to a firm that does video conversions (from film to digital). Drive returned with expected (good) results, but now I can't write anything onto the drive - says I can only read. So I copied all files on the drive to another disk, then used Disk Utility to initialize. First Aid tab action buttons are all greyed out. Erase tab shows default format as MS DOS. I changed to Apple Extended (Journaled) and pressed OK. Process starts, but fails after a few seconds with error "Write Failure". Now disk won't mount when I attach it - only Disk Utility "sees" drive, but fails each time I try to Initialize/Erase.
What's up, and how do I correct?
Thanks

If you haven't fixed this yet, you may be able to use Disk Utility to completely erase and reformat the disk.
Click the top line of the drive, then the Partition tab. Click +1 partition+ (or however many you want) under *Volume Scheme*, then Options at the bottom. Select GUID for an Intel Mac, +Apple Partition Map+ for a PPC Mac. Setup the partition(s) you want to use on the Mac as +OSX Extended (Journaled),+ then click Apply.

Desktop or Disk Utility won't show External Hard Drives

The Desktop or Disk Utility won't show 2 of my old external hard drives and so they are currently unsusable. My computer however recognise other external drives.
320GB Western Digital MyBook Premium model number: WD3200D032-000
500 GB Western Digital MyBook Premium model number: WD5000E032
I have same issues both of these external drives.
The blue circle lights come on so power is getting to it.
Tried 2 USB cables, one I know for sure is working - Nothing.
I am using Lion 10.7.4 on a mid 2009 13" MacBook Pro
All efforts to help much appreciated

No they haven't worked on this computer before. I using them on my old MacBook Pro (a computer which is no longer working) which ran Snow Leopard.
The 500GB drive "stopped working" with that old MBP too
But the 320GB drive was always working with old MBP if I remember correctly.
Cheers

Disk Utility won't start up in 10.5.3

I have been unable to open up my Disk Utility at all. I was able to do so earlier, perhaps with 10.5.0 while I was mounting my external hard drive. Now, I cannot mount the hard drive, and therefore cannot use Time Machine all because DIsk Utility won't open. I've diagnosed my hardware with "Disk 1" and found no problem. And, I've reinstalled the operating system. Any ideas?

Chris:
I just had the same issue on my son's MacBook. As long as you have a wired keyboard, the following will work.
1. Shut down the computer if it is on.
2. Press the power button to start the computer.
3. Immediately press and hold the Command (Apple) key and the "s" key for single-user mode.
4. Type mount -uw / (then press the Return Key) wait for next line to appear with # root/
(there is a space between t and - and another space between w and /)
5. Then Type "passwd" (without quotation marks then press the Return Key)
6. Enter new password (this will be for the root user account) (watch your fingers when you type because it doesn't show what you are typing, then hit the Return Key after you type it.
It will prompt you to retype the new password again, so retype it again and then hit the Return Key) wait for next line to appear...
7. Then Type "reboot" (without the quotes and hit the Return Key)
after the computer restarts and comes up with the login window....
8. Login with any of your usernames just to get the desktop up.
9. After desktop comes up choose System Preferences, then choose accounts. Unlock if you have to and using the username: root ..... and the password you just setup in the single user mode You now should be able to make users including your existing user account an admin.
After you log back in under your real account, it is advisable to deactivate the root user account. To do this,
1. Click the Finder icon in the Dock.
2. From the Go menu, choose Utilities.
3. Open Directory Utility.
4. Click the lock in the Directory Utility window if you need to unlock the utility.
5. Enter an administrator account name and password, then click OK.
6. Choose Disable Root User from the Edit menu.
Hope this helps.
David

Disk Utility won't resize a partition

Disk Utility won't resize (eliminate smaller partition from a 2-partitioned internal) Hard Drive. This is the message I get:
"Partition failed
Partition failed with the error:
Filesystem resize support required, such as HFS+ with Journaling enabled."
Help files offer no information on this error. I followed the Help instructions to do this operation, but the resize doesn't work. The older, smaller partition shows up in Disk Utility but is dimmed out. It will activate at highlight, but is not recognized on the desktop.
Any suggestions as to how to fix this problem?

Intel based Macs use a different partition scheme called GPL or GUID rather than what PowerPC used, APL.
You could try reformatting, or get a new system, and run BootCamp and Windows even.
Even if you've used Macs for years, there is always a place on my book shelf for this one, David Pogue's "Mac OS X: The Missing Manual (Leopard Edition)"
http://books.slashdot.org/books/08/02/27/1551206.shtml

10.4.11 Installed -Safari Crashes, Disk Utility Won't Open

Installed 10.4.11 yesterday via software update on our 2.0GHz Core Duo Macbook Pro.
After installing Safari crashes seconds after opening (it freezes then crashes) and then I downloaded the 10.4.11 update from Apples website (using firefox) but Disk Utility won't open it. If I try and launch disk utility myself it just bounces in the dock once and closes. Please help!

Same here - two identical iBook G4's, both updated to 10.4.11 - one is fine and everything works, the other one has the following problems: safari crashes 100% of the time, USB devices are failing to be recognised (mouse, storage key etc).
Looking in /var/log/system there is an error message saying a previous version of a kernel module is already loaded (cant get to the original error message text sorry!).
Looking on other forums looked like a simple 'trash the cache' fix - which I did - and hey presto the usb devices started working - but not safari. Messing around trying to flush out a safari cache failed after a few attempt, as did fixing file perms, zapping PRAM, booting from open firmware, and all the other usual things mentioned in the forums.
As it happens the iBook has nothing precious on it - so though to reinstall from the original installation disk. iBook G4 specific OSX Tiger distribution disk 1 inserted, but iBook now refuses to boot from it - holding down the c key on reboot just pops up a blue screen with a folder icon on it and an alternating finder and question mark logo - as in 'error I can't find a system on this installation disk' - the iBook then boots from the internal disk - getting nowhere fast.
Out come the Leopard install disks, and iBook quite happily boots from there and is right now doing a clean install from them (like I said nothing precious on there and thats why I cant get to the original error message...).
I've seen lots of posts about folks struggling to boot from the original install disks recently - wondering if patch 11 did something to knock the OSX version number on the machine greater than the version on the shipped G4 install disks??
And there is something very odd about patch 11 that seems to have hit this iBook and not my other one - they both installed fine, they have identical software apps on them and they are both the same spec.
Can't help more than this - but given I've seen these issues raised in several places worth adding to the thread.

Disk Utility missing the Erase tab

Tonight, I was attempting to reformat my Mac Mini FileVault encrypted hard drive. I have Mountain Lion 10.8 installed on it, and I have a bootable Mountain Lion USB stick.
I booted from the USB device, and first tried to format. Everything was greyed out. I had to "Unlock" the encrypted drive and then it was available.
I then tried to do an Erase, and it failed with an error I didn't catch, and then only "Macintosh HD" shows up (no volume below it in Disk Utility) and the Erase tab is unavailable. The Partition tab is also locked and nothing can be chosen.
I can Verify and Repair with no problems, but I am unable to repartition or erase the drive.
Any thoughts?

I ran in to this issue once again, when trying to clean install Mountain Lion on my MacBook. I rebooted to the Recovery partition, and tried to format/erase using Disk Utility and that failed and left the system where only the drive (Macintosh HD) would show up, and Erase was greyed out. I was unable to format using the command line due to seeing the message:
"The disk is in use by Core Storage as a Physical Volume"
I found a solution here:
http://apple.stackexchange.com/questions/59026/how-to-install-mountain-lion-on-a -disk-that-cannot-be-formatted-in-recovery-mode
See the post by Anderson, where he shows how to clobber this Core Storage volume:
Basically, you need to run diskutil CoreStorage list from Terminal. Identify the logical CoreStorage volume from that list and note the UUID string.
Then type diskutil CoreStorage delete UUID where UUID is the string you identified.
You can then partition with Disk Utility and run a Mountain Lion install.
This did the trick for me, and I was then able to 0-byte format the drive and do a clean install over the internet.

Disk Utility doesn't burn DL DVD+R

I can burn DL only by using DVD decryptor on Winxp vm but not using Disk Utility
I can mount the iso and read all the files, so I know there us nothing wrong with the image
I'm am using latest version of Snow Leopard in 64 bit mode

Greencard wrote:
It is a Kodak DVD+R DL
I get message "try different media" or something similar when I put the blank DVD in (will return when I get home to get complete exact message)
However, it is not the media as the same blank DVD on the same drive works under WinXP emulation on same machine (I use Parallels Desktop). So it is either the disk utility program or the osx dvd drivers at fault
See Barney-15E's statement: While windows may have the appropriate drivers, Mac OS X may not.
You should try Verbatim.

By using "Disk Utility", will I burn a DVD to watch on TV or burn a DVD for storage?

Old Toad tells me to burn a DVD from"Disk Utility", but will that burn my DVD so I can watch it on TV, or will it store those files on a DVD?
If best, I would like to actually watch the DVD...

Disk Utility will create a data DVD for storage.
Ony iDVD will burn a video for playback with a DVD player or your Mac.
The current Apple thinking is that the entire world has access to fast broadband and wants to distribute home movies to friends and relatives via download (iCloud) rather than mailing them a DVD. The fact that in reality not all users do, has so far had no effect on this policy. If you scream and shout loudly enough down the phone Apple may send you a free copy of iDVD. That worked for some, but is now said to have been withdrawn by Apple. Also, you can complain bitterly here, perhaps suggesting that Apple could have provided a choice between using iCloud and burning DVDs:
http://www.apple.com/feedback/
Whilst Macs with a Superdrive continue to be able to burn video DVDs, the software for so doing, iDVD, is no longer included in the iLife bundle that comes with OS 10.7 Lion (which also omitted iWeb) or will come with OS 10.8 Mountain Lion. And it is no longer included in the iLife 11 from the online Apple Store: http://www.apple.com/ilife/. Your only solution is to look on Amazon or eBay and try to get an older version that includes iDVD.
However, the vastly more expensive FCPX can burn a DVD without iDVD or DVD Studio Pro involvement, but lack the themes etc of iDVD. Also, of course, there is Roxio Toast.

Disk utility won't erase a dvd-rw

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