HT1338 my os x disk keeps being ejected prior to Installer opening; why?

Could anybody tell me why my osx disk (snow leopard) keeps being ejected?
Thank you for your suggestions!
Ron

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Warning regarding disk not being ejected properly

I continually and sporadically get a screen warning that "the disk was not ejected properly" when no disk has been removed from the system. What problem would this indicate? How can it be resolved? Thanks for any help you can give me.

Many of those WD drive cases, the drive was part of the case, which was news to me.
www.macsales.com/firewire has bare drive cases, case with drives.
maybe you can cut down on clutter in the process.
The ideal would be a PCIe SATA controller in your Mac Pro, then connect drive cases, and you can have 2-4 drives per case and their own power adapter and supply.
It may have seemed cheap and simple to just start with a single drive for a need but at some point... consolidate your drives if possible.
I would not use a Passport unless you travel with it, they are more commonly used by laptop owners. They tend to put 5400 rpm drives in those, or green type, rather than a standard desktop or WD Black that is most common, to reduce heat and lower power requirement.
This is the newest 2TB Passport
http://www.amazon.com/Passport-Ultra-Portable-External-Backup/dp/B00E055H5O/
You also would be better off with a PCIe USB3 controller. I think (not sure so check it out, but USB3 probably supplies more power to the drive than the Mac's USB2 bus ports do.
http://www.amazon.com/Compatible-Windows-ORICO-PFU3-4P-Controller/dp/B008V3THAC/ r
OWC would be a good place just to check - Sonnet and CalDigit are popular and supported, USB3 cards do tend to cost more, and support has always been at the whim of OS X and changes.
The above USB3 card though does say "10.8.2 and above" and is cheap.

HT1338 I have mountain lion and cant get time machine to work. the disk keeps getting ejected.

I just installed Mountain lion and i can't get time machine to work. every time i connect it time machine starts but then ejects the drive. I also tried to back up direct to the hard drive with the software that came with the drive and the same thing happens. Does anyone have a clue as to what may be wrong?

When that happens, you should get some sort of message. If you don't remember it exactly, go to the Time Machine Preferences window -- there should be a red "Failed" message and icon there. Click the icon to see the message. Either report the wording or post a screenshot.
If not, a clue may be lurking in your logs. Use the widget in #A1 of Time Machine - Troubleshooting to display the backup messages from your logs. Locate the backup in question, then copy and post all the messages here.

Mac mini mid 2010 hard disk keeps ejecting itself

My mac mini is set up with two sata disks installed, one is a 128 ssd and the other a 1tb hdd. Since installing mountain lion, the hdd keeps ejecting itself, and i get a message saying - this hard disk was not properly ejected. then i wont find the disk in finder, or disk utility!. I then have to remove the hdd from the mac mini and plug it into a usb caddy, which finds it no problem, and then when i put it back in the mac mini, it works again!! so the disk is not faulty i dont think. It then works for a period as random as a few hours, to a few weeks and then i will randomly get the "this disk was not ejected properly" message and it has again dissapeared. I use the mac mini as a media centre and it isnt really being pushed hard when the failure happens.
Anyone have any ideas as to whats wrong?

Hello, Sorry for the late reply.
When i open console after the ejection i get the message:
01/11/2012 22:32:42.000 kernel[0]: Failed to issue COM RESET successfully after 3 attempts. Failing...
01/11/2012 22:32:42.000 kernel[0]: disk1s2: no such device.
Hope this gives a clue, i'm tearing my hair out over it. there is absolutely nothing wrong with the disk itself.
If i do a full shutdown and restart, it finds the disk again no problems, but if i simply choose to restart from the menu, it does not find the disk again.
Thanks for any help you can give on this. I have only been experiencing this issue since i upgraded to mountain lion.
Drive information:
SAMSUNG HN-M101MBB:
Capacity:          1 TB (1,000,204,886,016 bytes)
Model:          SAMSUNG HN-M101MBB
Revision:          2AR10001
Serial Number:          S2R8J90B815515
Native Command Queuing:          Yes
Queue Depth:          32
Removable Media:          No
Detachable Drive:          No
BSD Name:          disk1
Rotational Rate:          5400
Medium Type:          Rotational
Bay Name:          Lower
Partition Map Type:          GPT (GUID Partition Table)
S.M.A.R.T. status:          Verified
Volumes:
disk1s1:
Capacity:          209.7 MB (209,715,200 bytes)
BSD Name:          disk1s1
Content:          EFI
living room:
Capacity:          999.86 GB (999,860,912,128 bytes)
Available:          648.66 GB (648,662,093,824 bytes)
Writable:          Yes
File System:          Journaled HFS+
BSD Name:          disk1s2
Mount Point:          /Volumes/living room
Content:          Apple_HFS
Volume UUID:          D6125397-BAE7-3496-9B9C-6534EEE0B660

Ever since upgrading to Lion I keep getting the error message "disk was not ejected properly."

Ever since upgrading to Lion on my iMac G5 Intel Core 2 Duo, I keep getting the error message "disk was not ejected properly." I have repaired permissions and reformatted my external LaCie 2TB USB hard disk, but the error continues. I use this disk for my Time Machine backups. This always seems to happen when the computer wakes from sleep, but not consistently. The computer was asleep overnight and backed up as soon as it awakend this morning. Two hours later I get the improper ejection message. I have used the same external disk with Snow Leopard (all versions), but never had this error message or problem. This disk has been in use without any problems since February, 2011. Upgrading to Lion is when this problem began. This is the below message (but from online image from Snow Leopard, but Lion message is essentially the same).

I had a similar issue. Mine was with a Seagate GoFlex drive. The solution was to install GoFlex for Mac 1.1.2 which included a 64-bit driver to disable the drives built in sleep timer:
http://www.seagate.com/ww/v/index.jsp?locale=en-US&name=goflex-mac-install-softw are&vgnextoid=77002aaf8cc5d210VgnVCM1000001a48090aRCRD
I document how I discovered this in my blog post:
http://www.innerexception.com/2011/10/tale-of-computing-misery-how-to-fix.html

Does any one have a solution to a blank disk not being read and unresponive to the eject button?

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Since installing OS 10.8 keep getting "This disk was not ejected properly" messages. Why?

Since I installed Mountain Lion (OS 10.8) on my Mac Book Pro (early 2011), I keep getting "This disk was not ejected properly" messages. No yet sure what I do preceeding this occurence. Anyone else have this problem?

I am one of those who had experienced this kind of problem. My former Time Machine disk used to automatically eject itself when my iMac sleeps, hence upon waking up my iMac. i always get the error message that the disk was not properly ejected.
From what I was able to gather from my experience, until the time that I found a workable solution, I think I can say that the problem is most probably caused by the incompatibility of certain external drives with how the iMac operates when on sleep and upon waking up. Some external drives are just not able to cope with how the iMac tries to remount a connected disk after it wakes up from sleep. There are just some external drives that cannot continue to be mounted after the iMac wakes from sleep. There are just some external drives that are not responsive enough. In other words, the existence of the problem lies with the type of external drive you are using.
My former Time Machine disk, the problematic one, was an Imation M300 Apollo 1 TB external disk. It unmounts everytime my iMac went to sleep, but does not remount after waking up the iMac. The disk will continue to be unmounted until I physically remove its USB connector and replug it in the iMac.
I replaced my former Time Machine disk with my current one, a Transcend Storejet 1 TB. And the problem went away. The Transcend disk continue to be mounted after the iMac is woken up even from the longest of sleep. I have even the energy saving option "put the hard disk to sleep..." checked. The Transcend disk comes with a Y cable, i.e. it has two USB connectors, but I only connect the one for both data and power--and it still remains mounted even after waking the iMac from sleep.
The sad realization, however, is that since there are only some external drives that are not able to work with the iMac, no matter how many those some may seem to be, it will be highly unlikely for Apple to itself fix this kind of a problem.
I, therefore, make the following recommendations:
1. Check first if your problematic disk has a firmware upgrade available. In some cases, the firmware upgrade may be enough to make the disk more responsive to the iMac waking up.
2. If there is no firmware upgrade available, check if your power/data USB cable is properly working.
3. If your power/data USB cable is in order, and the problem still persists, I think it is inevitable that you have to replace the problematic disk with a newer one that could respond well with the iMac's wake/sleep operation. With what disk will you replace your problematic one? I can only recommend from my personal experience the Transcend disk I mentioned earlier. You may also search this forum on other brands of disks that may also work.
Regards.

Why are all disks being ejected from my MacBook Pro?

Why are all disks being ejected from my MacBook Pro?

Likely that your optical drive is either failing or has a dirty laser lens and cannot read the disks.....

Message "The disk was not ejected properly..." keeps reappearing

Problem: I ejected an external HD (by control-mouse click), turned it off, and disconnected it from the firewire cable. Some minutes later, I got the dialogue box: "The disk was not ejected properly. If possible, always eject a disk before unplugging it or turning it off." I clicked OK, continued to work and, a few minutes later, I got the dialogue back again. This continued to happen several times, so I did a restart and the same warning reappeared at various intervals. I did another restart and have had the same warning appear several times.
Questions: How do I make the warning stop and, more importantly, what is wrong that makes this happen?
I have googled the dialogue and only seen discussions about time machine.
TIA

+but I'm still concerned about the iMac and why it is repeating the warning.+
I understand that and we need to do some troubleshooting to see if it will take care of things. Obviously, something got corrupted. Instead of running repair permissions from within DU, you could also run a utility such as Onyx (which includes that) available here:
http://www.apple.com/downloads/macosx/systemdiskutilities/onyx.html
Another suggestion is to start up from your install disk and run the "repair disk" from Disk Utility on that install disk.
If you want to check if the external is being recognized and still had the data on it, go ahead, but eject and unplug it before doing any of the above.
Hopefully either or both suggestions will help.

Disk Keeps Ejecting Itself

I've got a dane-elect multi-card reader.
I insert my canon 7D's compact flash card, delete a single picture,
and my card is ejected. I tried verifying it in disk utility, it unmounts
and I get a message saying that the disk was not ejected properly.
I just did a verify disk again, got this as an error:
Verifying volume “7D”
** /dev/disk3s1
** Phase 1 - Preparing FAT
** Phase 2 - Checking Directories
/.Trashes/501 starts with free cluster
Remove? no
/.Trashes/._501 starts with free cluster
Truncate? no
/.Trashes/._501: Cluster chain starting at 10 ends with cluster marked free
Truncate? no
** Phase 3 - Checking for Orphan Clusters
Free space in FSInfo block (209453) not correct (209452)
Fix? no
176 files, 6702464 KiB free (209452 clusters)
Error: This disk needs to be repaired. Click Repair Disk.
any idea what could be causing this?

I'm assuming this is an external disk connected directly to your computer. In that case, it's likely to be a loose or faulty cable connecting the drive to your machine. When it wiggles a little, the connection gets lost. (That also could cause corruption in your Time Machine backups when it happens in the middle of a backup... better repair that hard drive using Disk Utility!) You may be able to make it work more reliably by changing cables, or by leaving the machine untouched on a table or desk while the backups is running so it doesn't get bumped.
If the cable isn't the problem, it's possible the disk itself (or the enclosure it's in) is faulty, or that the port on your computer that you're connecting the drive to is damaged.

Disk keeps ejecting

My son bought the family pack snow leopard and every time I put it in the disk drive, it ejects back out and won't let me install.

HI,
Make sure the disk is free of fingerprints and smudges.
How to clean a DVD
Repair disk permissions and then see if the Mac rejects the disk.
Quit any open applications/programs. Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it's finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of "messages" in the permissions window, it's ok. That can be ignored. As long as you see, "Permissions Repair Complete" when it's finished... you're done. Quit Disk Utility and restart your Mac.
Carolyn
Message was edited by: Carolyn Samit

Why do I keep getting the message "The disk was not ejected properly." (There is no disk in the iMac)!

For about the last two to three months, every time I wake up my iMac from sleeping, I always get the message "The disk was not ejected properly."
There is no disk in my iMac!
This is no big problem to me, as all I do is hit the "enter" key, and it disappears until the next time I wake it from a sleep.
But, WHY is this happening?

Hi WZZZ. I don't know what to look for when I opened per your instructions, but here's the images:
Two more snaps to come:

A warning keeps appearing every 10 minutes indicating the disk was not ejected properly. How do I stop this warning?

The disk was not ejected properly. If possible, always eject a disk before unplugging it or turning it off.
To eject a disk, select it in the Finder and choose File Eject. The next time you connect the disk, Mac OS X will attempt to repair any damage to the information on the disk.

Try mounting a disk, then ejecting it properly, see if that helps. Please post back with results.

HT1338 my os x disk keeps being ejected prior to Installer opening; why?

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