Volumes not visible in disk utility

Hi All
I'm running an X-RAID and just updated all the disks to 250GB in all fourteen slots. Then I made two new RAID 5 arrays, one on each side, using RAID Admin 1.5.1. All lights are green and the arrays seem fine, only they do not show up in disk utility or any other disk software like Disk Warrior. Nothing shows. I read somewhere that I might need to disable the LUN masking but the new RAID Admin won't let me do this as far as I can see.
It's running OS 10.4.11 on a Mactel 2x2.66Ghz 8GB Ram

Did you upgrade the firmware to 1.5.1? If you didn't, then LUN masking is in place but RAID Admin will not let you turn it off. If you upgrade the firmware to 1.5.1 then there should be no LUN masking since 1.5.1 dropped support for it.
You can download and run RAID Admin 1.5. This version supports LUN masking and should allow you to turn it off.
If your firmware has been upgraded to 1.5.1 then something funky might be happening. You might want to downgrade the firmware to 1.5, then check LUN masking, and then upgrade back to 1.5.1 after it is turned off.

Similar Messages

Internal hard disk is not visible in disk utility in Macbook Pro

Hi All,
I am trying to repair my mac. But in disk utility, the hard disk is not visible to proceed. Its showing disk0 -> volume with only 1.79GB. and all the options are disabled. The capacity of my mac book pro was 500GB.
Please help me in solving this issue
Thanks in advance....

So you've booted into your Recovery partition and you don't see any drives in Disk Utility to select in Recovery mode?
If the drive cannot be repaired, it's likely dead and you'll need to purchase a new internal drive.
Good luck,
Clinton
MacBook Pro (15-inch Late 2011), OS Mavericks 10.9.4, 16GB Crucial RAM, Crucial M500 960GB SSD, 27” Apple Thunderbolt Display

External hard drive not visible in disk utility or finder

Hi all,
I have had a good look through previous discussions and I can't seem to find an issue relevant to mine.
My external hard drive has 2 partitions (1 time machine back up, 1 general hard drive). The issue is that the HD is running when it is plugged in however it is not visible in either disk utility or finder.
I am running OS X 10.10 (Yosemite) on a 2010 MacBook Pro. I also have parallels desktop running windows 7. When I boot windows and plug in the HD I usually get the option to mount the HD to either OS X or Windows. With this issue the option window appears for a split second (not enough time to select either) and then disappears. It seems that the HD may be ejecting itself as soon as it is registered by the computer. I have tried using a different power cable for the HD and also a different usb cable, this doesn't help.
The external HD is a Samsung D3 Station, which i have had for 6 months now and never had an issue with.
Any help is appreciated
Thanks,
Bruce

An update for anyone who can help me:
I have tried the external hard drive in other computers (mac and windows), each time I get the same problem above.
I have removed the HD from the enclosure and purchased a docking station for it (3.5" SATA). When I plug it in to the laptop it disconnects itself straight away before it is visible. With the windows computers it installs the drivers and says that the device is ready to use, then disconnects before it shows up.
As the HD is not visible there is no option to re-format or anything.
This is very frustrating as I was using the HD with no issues and it randomly disconnected and I have not been able to access since.
Thanks in advance for any help.
Bruce

IMac G5 17" is DOA... drive not visible in Disk Utility

About a week after my computer went out of warranty (OS 10.3.9), I have been experiencing random complete system meltdowns every 5 or 6 months. It begins while using the search feature, the beachball spins for 8-10 minutes then pulls search results. Following that, the system stalls on every task, and restarts with the blinking "?" folder. In the past, a re-install of the OS was a frustrating, but simple solution.
Last Friday, this happened for the fourth and final time. Upon attempting to re-install the OS, the install froze, locking up the computer. When I restarted to try to re-install the OS, the drive was not visible in the Disk Utility. It isn't visible in any Mac utility that I have tried, nor Disk Warrior.
I just replaced the SeaGate 7200 hard drive with a refurbed one, and the problem continutes--the drive is not visible to the install.
Is this 2-year old Mac now a paperweight? With the market resale value of this machine only about $500-600, I can't stomach spending a third of that to have something repaired, for all of this to potentially happen again.
Is it terminal? Has anyone else experienced this?
I'm really bummed out. As a Mac user for the last 15 years, I can't bear the thought of spending another 2 grand on a computer that will let me down again. I'm tired of the Pee Cee world hazing me as it is, and episodes like this don't make it any easier. Someone please tell me there is a solution...
doug

It DID break down a week after I received a call from Apple asking me to purchase an extended warranty. I wouldn't make that up.
It's on 10.3.9 because, in typical Apple fashion, 10.4 came out a WEEK after I bought my computer. I never bought the upgrade software from Apple just out of anger that a new computer was shipped with obsolete OS installed when a new version was hitting the shelves so soon afterwards. I work on 10.4.10 here at the office, and never missed the "features" at home. For $179, it wasn't something that ever screamed to be a necessity for a home computer.
The drive wasn't necessarily refurbed, but it was "recycled" and bought cheap to find out if it could be a simple solution. For $35, it was an easy attempt to figure out what was wrong with the computer. It didn't solve the problem, and was much cheaper than throwing money at it without knowing what was wrong.
At this point, I'm trying to save this box from becoming landfill. I bought a Dell PC laptop this past weekend for a third of what I paid for this iMac, and when it breaks down or obsoletes itself in 2 years, it won't be so difficult to swallow getting rid of it for something new.
I'm going to open this up again this afternoon to check the test LEDs and see if I can spot anything.
Don't get me wrong, I love Macs, and always will, but I can't any longer justify spending $2000 on a home computer. They are disposable appliances, and if they aren't going to come from the factory with warranties long enough to last through their lifetime, then it's difficult to spend that much money on a computer than only needs MORE money spent to maintain functionality.
I'll post back with my findings later today after I crack this open. Thanks for the assistance so far.
doug

Hard drives not visible in Disk Utility

I decided to add two additional 1.5 TB drives to my (early 2008) Mac Pro, in addition to the two 1.0 TB drives already there. I have a Mac RAID card, but the drives were not configured into an array because I was having battery and setting problems with the RAID card as described in previous posts.
I perhaps got the the not so bright idea to reconfigure my system from scratch, so I put the two 1.5 TB drives in, created partitions via Disk Utility, and then took all the drives out. I then put one of the new 1.5 TB drives in only, and re-installed OS X. So far, so good. Then, I put all 4 drives in, including the previous 1.0 TB drive with OS X on it.
Interestingly, the system then booted to the old 1.0 TB drive with OS X, and then it 'hung' on something with the spinning icon. I shut it down, and then put the new 1.5 TB with OS X, but it would not start. I yanked out the RAID card, figuring it was not helping. I managed to put the Boot DVD in, and the system does boot to DVD. However, it cannot visualize any drive at all, only the two DVDs in Disk Utility.
I tried several things. One is hardware scan by holding the 'D' key on startup -> no errors.
I then tried resetting the PRAM holding the command-option-P-R keys, same issue - boots to DVD, but no drives.
I then tried resetting what I think is the SMC, which is a button on the motherboard down near where the memory slots, and there a green light comes on next to the STBY area.
I'm out of the Apple care warranty, and I guess I'll have to pay for support going into the Mac Store, but I am hopeful someone has an idea.
I wondered if the cable from the SATA connector to the motherboard was loose, but it appears intact. However, I'm not sure how to get the plastic cage off.

Good idea, but the RAID card is out, and even the original drives are not visible. There is some type of BIOS or some related error.

I deleted a partition on my macbook pro and now that space is not visible in Disk Utility

I had a dual boot setup on my 1TB drive on my macbook with a linux partition. I decided to delete the linux partition and free up some space for my OSX partition. I went into recovery mode and first erased the linux swap partition then the linux partition. Then I went into the partition tab on Disk Utility and clicked on the "-" button for each swap partition and linux partition. Now when I go into Disk Utility now though the 500 GB that should have been freed up is not visible and I cant resize the OSX partition to include the extra space.

Let it finish, then you can safely delete it.

Time Capsule not visible in disk utility

i'm trying to create a disk image on my time capsule to so i can store some seperate media files and the time capsule is not available in the disk utility when its connected via the network. do I need to be connected through and ethernet cord for this to work?
Thanks.

When you click New Image, a setup box will appear.
Make sure that the little arrow in the top box next to Save As appears in the "up" position
Look for your Time Capsule under the SHARED heading in the Finder window on the left
Click the Time Capsule icon
Then double click on the Time Capsule folder to the right
Type a name in the Save As box at the top
Name the Disk Image
Select the size of image that you want
Keep the format of Mac OS Extended Journaled and single partition and read/write disk image
Click Create
It takes about an hour for a 25-30 GB disk image to be created, so do this using Ethernet. Allow 3-5 times longer if you do this using wireless
Some users find it easier to save the Disk Image to the desktop and then move it over the Time Capsule disk, but this takes longer.

Time Machine backup not visible in Disk Utility, nor accessible through Recovery Assistant

Hi,
I want to recover from a Time Machine backup but the external HD where it was stored now shows empty (1TB available) and the name 'backup' has been replaced by 'untitled'. It was fine yesterday. How do I get my backup back? Is there external software I can use, something throught Terminal?
Thank you,

Yes, that's option B as she still has the IMac but I'm curious as to why the TM backup isn't working - just in case I need to do this on another machine down the road, it would be nice to know what's going wrong with the more convenient TM restore option.... Thanks!

AppleRAID enable: The target disk must be an existing volume, not a whole disk

I have a Samsung 750 which failed to spin up a time or two the past year. Scrounging I found a Seagate 750. Seeing as how I have plenty of drive bays I think the right thing to do is bind the Samsung and Seagate into a mirrored RAID. This volume is used for Time Machine.
Did similar to my Mac Mini Snow Leopard Server when it was new without wiping the original filesystem. But can't get there from here today following similar instructions.
The Samsung is disk2, Seagate is disk1. In Terminal.app I start with:
% diskutil appleRAID enable mirror /dev/disk2
The target disk must be an existing volume, not a whole disk
Blah. Perhaps this helps? Is essentially the same as the 320GB system drive as formatted by Apple:
% diskutil info disk2
   Device Identifier:        disk2
   Device Node:              /dev/disk2
   Part Of Whole:            disk2
   Device / Media Name:      SAMSUNG HD753LJ Media
   Volume Name:
   Escaped with Unicode:
   Mounted:                  No
   File System:              None
   Partition Type:           GUID_partition_scheme
   Bootable:                 Not bootable
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Verified
   Total Size:               750.2 GB (750156374016 Bytes) (exactly 1465149168 512-Byte-Blocks)
   Volume Free Space:        Not Applicable
   Read-Only Media:          No
   Read-Only Volume:         Not applicable (no filesystem)
   Ejectable:                No
   Whole:                    Yes
   Internal:                 Yes
   OS 9 Drivers:             No
   Low Level Format:         Not Supported
   Device Location:          "Bay 2"

This message, and threads like yours got asked daily for over two years, now it is only a couple times a week!!
Is it so hard to follow through? you were to have backup already, clones are best, then erase/format and restore.
Then partition.
Some have been able to use Disk Utility booted from OS X DVD or another drive, and repair the drive.
You have to use Boot Camp Assistant (99.9% anyway) to create and achieve a proper Windows Master Boot Record partition.

Improperly ejected external hard drive is not displaying on computer...not even in Disk Utility

My external hard drive has been repeatedly ejected improperly and now it is not displaying on my computer, not even in disk utility. How do I re-mount this external hard drive? In the past when this has happened, all I had to do was go to Disk Utility or use DiskWarrior to fix the issue but now it won't even show up in either of these apps.
Any help would be appreciated
2008 MacBook Pro 10.9.3, WD My Studio 1 TB External HD

From the menu bar, select
 ▹ System Preferences ▹ Energy Saver ▹ Power Adapter
and uncheck the box labeled Put the hard disk(s) to sleep when possible, if it's checked.
If the drive has more than one interface (USB, FireWire, Thunderbolt, eSATA), try one of the other interfaces.
Check that the data cable is securely inserted at both ends.
Try a different cable.
If you're connecting the drive through a hub, connect it directly to a built-in port on the Mac.
If you're connecting it directly, try a different port.
Disconnect all other devices on the bus, or as many as possible.
Test the drive with another Mac. Test another drive with this Mac.
If the drive is bus-powered, but has an AC adapter, connect the adapter.
Start up in Recovery mode and launch Disk Utility. Is the drive recognized?
Start up in Safe Mode and test.
Reset the NVRAM.
Reset the System Management Controller.
If the drive doesn't work under any of the above conditions, and if another drive does work with the same Mac, then the drive has failed. You may be able to salvage the mechanism by removing it from the enclosure and installing it in another one, or in a drive dock.

External hard drive not showing in disk utility

my samsung external hard drive has always worked with no problem on my mac..
I have just plugged it in to do some work and it will not appear anywhere..
not even in disk utility
i have tried the USB port and it is working fine because i also have a mouse and that worked fine in that port..
PLEASE SOMEONE HELP ME!

Try following tips.
USB and FireWire Quick Assist - Apple Support

Thunderbolt WD Duo, does not show in Disk Utility

Hi Have imac 27 (late 2012) with 10.8.3 update OSX. Connecting to WD Thunderbolt Duo, the disk does not show in disk Utility, sys log or in any connection to the system. WD utility does not seems it either. Restart does not help. By disk returning to seller, the disk works fine on other comp (with the same cable, with the same power adapter)
Is there any issue known with the thunderbolt ports? Tried both all found on internet, but no resolution, to my issues.
Seems to be my imac hardware or maybee the software (thunderbotl 1.2) update.
Lukas

All thunderbolt port tried, cable exchanged, no change
I have done following procedure , no change
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

XServe: Disks do not appear in disk utility

Hi,
I have the following problem with our Xserve (intel) with MacOS Server 10.6.4:
I have a bunch of firewire 800 external drives witch are daisy chained. They are configured as JBOD and were working just fine.
But suddenly they disappeared. I looked them up in the disk utility but coudnt find them there any more; but the system profiler still shows them in the FireWire tab.
This way it started: I cant attach external USB / FW Disks any more; they just do not appear in disk utility.
With another Mac I could verify that the disks are fine. The problem is with to the Xserve.
I even tred
Thanks in advance, Daniel

Hi Daniel,
Hope this doesn't sound silly but is the xserve locked or unlocked? If it is locked you need to unlock it for the disks to mount.
Hope that helps
Beatle

I am connected to time capsule via wi-fi but air port says not connected and disk utility does not see it

I am connected to time capsule via wi-fi but air port says not connected and disk utility does not see it. I had it connected via ethernet and it still did not see it. Then i disconncectd it from ethernet and did the Wi-fi connection and am able to post this message but air port still does not see it.

Disk Utility will not "see" the Time Capsule, so no need to waste any more time on that issue.
but air port still does not see it.
Not sure what you mean by "air port" here.

Time Capsule Not Seen By Disk Utility, Not On Desktop

My 1T TC works like a champ and backs up as expected. Can TC be used as an ordinary external HD in addition to being the location of TM back ups. The TC does not appear on my desktop and is not discovered by Disk Utility.

Rocky,
Be very careful with the xxxxxx.sparsebundle file. That is an image of all of your Time Machine backups. Leave it alone unless you want to delete all of your backups.
If you do want to delete your Time Machine backups, use the gear icon just above the xxxxx.sparsebundle file. Click the .sparsebundle file to highlight it and select Move to Trash. This is only safe way to do this.
There is also an alternate way to delete your backups and wipe the Time Capsule clean if that is what you want to do. Open AirPort Utility, select Manual Setup, click on the Disks icon, then click on the Disks tab just below that and select Erase. This is probably the better option if you want to start over with a clean disk.
Now, if you want to create a folder or folders on the Time Capsule to move files into, use that same gear shaped icon in the preceding paragraph and select New Folder. Once you see the folder, you can rename it as needed. Create more folders in the same way. You can drag files into the folder from the desktop.
I haven't tried any kind of automated backups into the folders and don't know if this might be possible.
If you add folders and keep your Time Machine backups, Time Machine will leave the folders alone even if the TC is full and deleting old backups to make room for new Time Machine backups.
Hope this helps. Just be careful and you will be fine.

Volumes not visible in disk utility

Similar Messages

Maybe you are looking for