Not recognizing external disk

I have been using Mercury Elite-AL Pro mini (firewire connection) for backing up my Imac for a long time without any problem. Recently, I discovered that the disk icon had disappeared from the desk top, and the disk is no longer recognized by Imac. I have tried reboot, power down and up, but nothing works. I noticed that the OS was recently updated (auto update) to os x 10.6.8. Could this be the problem? Before going any further I would like to isolate whether it is a accessing problem or a disk problem. How?
Please help.

Hi Eric,
I have tried disk utility and profiler, both did not know it exist, as if nothing is connected to the firewire slot. I tried connecting it to the usb slot. Same situation. I hooked it up to a pc and it told me that it is a faulty device. At this point I am pretty sure it is the disk problem and in the process of getting help from OWC, the disc manufacturer.
Thanks for your info.

Similar Messages

Finder not recognizing external disk drive

Hi
I have just bought a Firestorm external drive to burn CDs. Attached it without any problems but as soon as I put in a blank CD it comes up with the message "You cannot burn this disc in the Finder because the disc drive is not supported".
There's no problem with viewing pre-burnt CDs in the drive, it just seems to be read-only at present.
Do I need something else - driver/other CD writing software?
Thanks
Berryman

Thanks both for the advice.
I ordered Toast as I hadn't got Patchburn to work previously. I decided to give it another go tonight and typically it worked fine and the CD is now writing perfectly.
Cheers
Berryman

Hard drive not recognized in disk utility

I'm trying to replace the hard drive in my MacBook Pro , the old hard drive was not recognized in disk utilities after the computer crashed .After installing a new hard drive and booting from the original Mac OS install DVD,( leopard?) the new hard drive is not recognized either ? Help

It may be the internal connecting cable that is the problem. If you can install the new HDD in an enclosure, connect it to the MBP, then see if you recognize it using the OSX installation disk. If so, the internal connector should be replaced.
Ciao.

Time Machine not recognizing external hard disk

I am trying to set up backups via Time Machine on my external hard drive but as I go through the process the my hard drive is not recognized in the dropdown menu. It the external hard drive is recognized in the Finder but not by Time Machine. What gives?

do you know how the disk is formatted? it may be in a format that time machine does not support, but which the finder can see. just like this guy:
http://discussions.apple.com/thread.jspa?threadID=1241053&tstart=0
(solution included in that thread as well).

Powerbook G4 is not recognizing external HD

Hi. My computer is dying. I can feel it. It's doing all these weird things it never used to do, like suddenly lapse in to a grey screen where I can do nothing but restart it in order to get it working again. I have about 60 gigs worth of music and pictures that I absolutely must back up. The problem is, some time in the last 6 - 8 months, my computer suddenly stopped recognizing external HD devices. I've tried it with three separate devices now. The first two were loaners but this last one I bought. I know I meet the system requirements, and I can't think of any reason why this would be happening. I've tried 3 different devices, which rules out the problem lying with the devices. My computer used to recognize external HD's just fine. I have no idea why it stopped.
Two things worth mentioning: My battery is dead. Someone stole my battery and replaced it with a dead one, so my laptop is no longer portable. But it shouldn't be an issue of the device not receiving enough power because the computer is plugged in.
The light on the device is not a solid green; it's blinking with orange, and the device keeps making a faint clicking sound.
Any help would be much appreciated. If I can't figure out the problem here I'm going to have to take my computer to the apple store and that's always a hassle.
Thanks

Oh my ....
First, if you have the original OS X disks that came with the system, insert the first one (should say in small print on the label 'AHT Version x.x'), reboot, holding the alt/option key down, and choose the Apple hardware test, and when prompted, choose the extended test. If you have either of the TechTool programs, they can do similar testing. Does that point out any hardware issues?
Faint clicking normally suggests a hard drive about to die. You could always download Smart Utility from http://www.volitans-software.com/smart_utility.phps to get a readout of your SMART sensors. If you're hard drive is 3-5 years old, it may be on it's way out, and causing issues.
Have you reset the PMU? And while you're at it, might as well reset the PRAM. PMU reset is: http://support.apple.com/kb/HT1431 and PRAM reset is:
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
After that, what the status?

Hard crash now hard drive not recognized in disk utility.

During a virus scan the Macbook froze up now the computer does not seem to be accessing the hard drive. Tried to reinstall Leopard but the internal hard drive is not recognized (same is true when we tried to use Disk Utility). It will not start in safe mode either. Does this sound like a fried hard drive or maybe a corrupted drive that might be repairable with DiskWarrior? Any thoughts would be appreciated.

If the A/V you were using was Norton/Symantec, the drive may be OK. Norton is a virus.
Burn a Ununtu CD and see if you can boot into it and look at the drive before giving up on it.

Itunes not recognizing external hard drive

I have a smartdisc firelite external hard drive that was working perfectly until yesterday when I bought a shuffle and now itunes is not recognizing to go the hard drive to locate the songs. Can someone walk me threw this so I can download some songs from my external drive to itunes and then to the shuffle ? Thank you so much

†ry the refresh script from here http://ottodestruct.com/blog/2005/10/20/itunes-javascripts/

Finder is not recognizing external drive

Yesterday, (Mar 28,2012) Finder was listing my external drive but when I went to eject the drive, it no longer showed in Finder. I cannot eject the drive properly. It is showing on my Desktop. I've done a disk utility verfy disk and it is recognized and no problem was found. I tried a new USB cable and the old Fire Wire (which doesn't work??). I used a different USB port but nothing seems to work. I've also tried restarting. I am running a MacBook Pro with 10.6.8. Any ideas??
Thanks for the help.

Just a thought, if your external hdd shows up on the desktop and disk utility I would start simple and check Finder preferences. Once Finder preferences is open click on the tab sidebar and see if External Disks is checked under Devices. Also, you can properly eject the external hdd icon that shows up on the desktop by dragging and dropping it to the trashcan.
If this didn't work, and what necronym didn't work, I would suggest deleting this file found at /library/preferences/com.apple.finder.plist , then restart the computer. Then test the external hdd with Finder again.

Not Recognizing external Lightscribe drive

I have just purchased a
Bytecc Aluminum External USB 2.0 DVD+/-R RW Dual Layer 18x Burner w/lightscribe powered by Samsung SH-S182M
https://www.supergooddeal.com/ProductDetails.asp?ProductCode=S82M-ME5-BK
It appears it is an internal drive put in a external enclosure. If i go to the Samsung Site it does not show that its is OSX compatable. However the enclosure that the drive is in itself is compatable with OSX. However when i plug in the drive OSX does not recognize it. I tried going to the bytecc website to see if i needed to download a driver or something. If you have any suggestions, they would be helpful.
Thanks
Steve

Not to be rubbing it in, though I'm doing all my backups on an NTFS formated disk through NTFS-3G.
But lets focus on you problem, the suggestion by Robert Jarosh1, did it work?
Otherwise, the complaint by chkdsk could very well be that it does not understand the format (i.e. Mac OS ext.), I assumed that it might be an NTFS format issue, I was wrong. Otherwise it could have been a broken/lost partition table.
So, you wiped you computer clean and now it won't recognise the external disk when using the SL installation disk (boot disk)? Just so I got it right.
How about installing the OS from the DVD and see if the OS can recognize the external drive? Then use Migration assistant to restore your system from backup?
Otherwise, try something else just to be sure. Fire up terminal from the boot disk and cd yourself to /Volumes/ to see if the disk shows up at all!
Best of luck and regards

Usb port not recognizing external drive

When I plug my external backup drive, Lacie, into either USB ports on my MacBook Pro, it is not recognizing the drive. Not sure if I powered down incorrectly. It use to recognize it. Help.

Start by looking for the drive in the Apple System Profiler (from the Apple menu's far left Apple logo>About This Mac>More Info>Hardware (in left column) >USB.) If the drive is correctly powered and connected, it will show up here.
If it doesn't show up, the problem is with the drive. With the drive plugged in, put your ear to the drive and listen for the whirring sound the drive makes when it is powered up. If it isn't making any sound, ot's either a bad drive or a bad power supply.
If the drive is making sound , then the problem is probably the USB cable or your USB port. Try a different USB cable. This should fix the problem; if all the above tests were good and the drive still doesn't mount, it may be the USB controller in the Mac. That's a serious problem that requires repair or installation of an aftermarket USB controller.
Hope this helps

Equium A210-1C4 not recognizing optical disk drive

I have a Equium A210-1C4 which will not recognise the odd.
The drive has power and spins disks but does not appear as a drive in MY COMPUTER.
It also is not recognised in the Bios.
I have updated the Bios and tried to install the firmware but get message that the drive is not found.
I have tried is in another computer and it works fine.
Has anyone had similar problems and is there a solution?
Many thanks

> I have tried is in another computer and it works fine.
You have tested optical disc drive in other computer?
Anyway, if the ODD is not recognized in BIOS Im afraid ODD controller is defective. It is mainboard issue so there is no some kind of easy solution.
I don't think you can do much about that except to exchange the mainboard.

Garageband not recognizing external inputs from minijack entrance

Hello
I need to connect a sound mixer to the Macbook via minijack audio entrance. Even I have changed the settings for audio input in System Preferences (from internal mic to external line) garageband is not recognizing any external input and internal microphoen is always active.
Someone had the same problem?
Thankx

Change the input in Garageband > Preferences > Audio Midi.

Time machine not recognising external disk on airport extreme

Hi
I have connected a LaCie d2 Quadra disk to the usb port on my airport extreme.
The disk is formatted as HFS+
If I look in Finder (with Bonjour computers enabled as displayed) I can see the external disk through the airport extreme. I can enter the disk and see the drive (it is connected), but I cannot add files to the disk.
If I open Time Machine setup, I cannot see any external disk at all.
If I look in Airport utility, I can see the d2 Quadra listed as an external disk on the extreme, and I have set it up for File Sharing (using the device password)
Can anyone advise why Time Machine (OS-X Yosemite 10.10.1 on iMac) cannot see it?
And what to do to get it connected please to allow backups from any mac user's machine?
Thanks
Andy

So, LaCie advised to connect direct to Mac to check all ok. It was.
As soon as the HD was plugged in directly, TM recognised it and asked if I want to use it for backup. In Finder, the d2 Quadra appears, I can open it, and transfer files directly to and from it.
For reference, the Airport Extreme is connected via Ethernet to the iMac I am using (so no WiFi in this particular chain of connectivity), and the Extreme firmware is the latest (7.6.4) for the model (802.11n)
The issue is that connecting to the USB port on the Extreme, I cannot get the HD to operate like this!
LaCie now state that they cannot help further!!!
Does anyone have any idea why the Extreme is not sharing the HD as it is meant to?
Thanks
Andy

Xserve Raid not recognized by Disk Utility

My Xserve Raid is recognized when I run the RaidAdmin utility. I can create new arrays everything shows up without any problems. I updated the firmware for the Xserve Raid using just the ethernet connection to administer it. Changed the card and the cables that are used to connect the Raid server to a G5 server, but it still does not get recognized by Disk Utility. I am at a loss of what to do next. I have green lights for everything....no problems showing up in RaidAdmin. Please, please help....

Hello
I have the exact same problem: after updating java and rebooting the server, the raid array is no longer visible. Everything is green, no errors in the log files, fibre channel is up and running, BUT: the array does not show with any SCSI address. LUN masking is off. Server is at 10.5.8 (intel). The array was mounting just fine before the reboot (and all before that). I've plugged the fibre channel into a PPC server, same thing: link ok, no SCSI. I'm reconditioning the drive at the moment, but it should still be visible.
Any help greatly appreciated.

Mbp not recognizing external display

I have a 2010 MBP 2.8 and I'm trying to connect to a 24" Samsung LCD display to use as a 2nd monitor.   I'm using the mini display to DVI. And plugging a DVI to HDMI cord to that.
When I plug it into the tv and computer. The screen on computer flashes blue a couple times then nothing happens.   The computer is not recognizing the display.    I'm running Mountian Lion obviously and theres no option in "Displays" in preferences.
Am I doing something wrong? I had a old Powerbook G4 that I did this with all the time with Leopard OS.    Whats changed?

Hey all, did a software update on my partner's mbp yesterday (10.5.8, security update 2009-006) and had the same thing happen where our external viewsonic display was no longer being detected. Plugging the cable in and out of the mini display port had the same effect already mentioned here where the mbp screen flashed blue like it was about to recognise the external display, but then nothing. Selecting detect displays from display preferences also had no effect. Tried resetting the PRAM and also the PMU, still nothing. So I shut down the mbp; disconnected the mini display cable; then turned off the viewsonic monitor at the power outlet and left it off for 10-20 seconds. Then I turned the viewsonic's power outlet back on, started up the mbp, turned the monitor on and plugged the mini display port cable in and the external display was back and working properly. Have shut down/restarted numerous times since then and it's all still working normally. Not quite sure how/why this busted in the first place, or why turning the viewsonic off at the power outlet seems to have fixed it, but it might be worth a shot for those experiencing similar problems... and it sure beats having to install/reinstall a different os version (which was going to be my next option)!

Not recognizing external disk

Similar Messages

Maybe you are looking for