Internal drive disappeared and no longer recognized???

A second internal HD that was installed new in my machine - now in use for over 2 years --has disappeared from the desktop. It doesnt appear in either system profiler or disk utility. I even tried to change it into another bay and still not showing up. It has alot of data on it, I would certainly like to retrieve (I do have some backups but not complete). Best steps to take?

sorry must make connection the computer this problem has occured on is mac pro 2.8 ghz quad core intel xenon

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External hard drive unplugged and no longer recognized by my computer

The other day my external hard drive fell from my poorly made wobbly desk and was unplugged without being ejected. When I plugged it back in it didn't reappear on my desktop so I went into desk utilities where I could see it, I tried to verify it and repair it but I got these error codes:
2011-07-21 18:52:34 -0500: Disk Utility started.
2011-07-21 18:52:59 -0500: Verify and Repair volume “disk1s3”
Starting repair tool: 2011-07-21 18:52:59 -0500
2011-07-21 18:52:59 -0500: Checking Journaled HFS Plus volume.
2011-07-21 18:53:29 -0500: Invalid B-tree node size
2011-07-21 18:53:29 -0500: Volume check failed.
2011-07-21 18:53:29 -0500: Error: Filesystem verify or repair failed.2011-07-21 18:53:29 -0500:
2011-07-21 18:53:29 -0500: Disk Utility stopped repairing “disk1s3” because the following error was encountered:
Filesystem verify or repair failed.
2011-07-21 18:53:29 -0500:
2011-07-21 18:53:39 -0500: Verifying volume “disk1s3”
Starting verification tool: 2011-07-21 18:53:39 -0500
2011-07-21 18:53:45 -0500: Checking Journaled HFS Plus volume.
2011-07-21 18:54:15 -0500: Invalid B-tree node size
2011-07-21 18:54:15 -0500: Volume check failed.
2011-07-21 18:54:15 -0500: Error: Filesystem verify or repair failed.2011-07-21 18:54:15 -0500:
2011-07-21 18:54:15 -0500: Disk Utility stopped verifying “disk1s3” because the following error was encountered:
Filesystem verify or repair failed.
2011-07-21 18:54:15 -0500:
2011-07-21 18:54:53 -0500:           Name :           disk1s3
          Type :           Volume
          Disk Identifier :           disk1s3
          Mount Point :           Not mounted
          File System :           Mac OS Extended (Journaled)
          Connection Bus :           FireWire
          Device Tree :           /PCI0@0/PCIB@1E/FRWR@3/node@d04ba40b0627a7/sbp-2@c000/@0:3
          Writable :           Yes
          Capacity :           931.4 GB (1,000,070,627,328 Bytes)
          Owners Enabled :           No
          Can Turn Owners Off :           Yes
          Can Be Formatted :           Yes
          Bootable :           Yes
          Supports Journaling :           Yes
          Journaled :           No
          Disk Number :           1
          Partition Number :           3
My hard appears on the desktop of my other computer but has no files on it and still will not pop up and my macbook. How screwed am I?

See the pink box in #6 of Using Disk Utility.

Can't insert a CD/DVD into the disc drive. Recently installed a new harddrive, and the CD/DVD drive hardware is no longer recognized. Also, with new harddrive, OS was updated from Snow Leopard to Mt. Lion 10.8.5 on late 2007 MBP.

Can't insert a CD/DVD into the disc drive. Recently installed a new 1 tb hard drive, and the CD/DVD drive hardware is no longer recognized. Also, with new hard drive, OS was updated from Snow Leopard to Mt. Lion 10.8.5 on late 2007 MBP (2.2 GHZ Intel Core 2 Duo. 4 GB 667 MHZ DDR2 SDRAM)

Also, when I check out the hardware list, under Disc Burning - the following is reported: No disc burning device was found. If the device is external, make sure it’s connected and turned on.
The disc drive worked fine prior to the HD upgrade and OS update to Mt. Lion.

If my hard drive disappears and is no longer running what are my options?

this is a last resort. Dropped the MBP. it wouldn't boot up. wouldn't boot in any mode, did the resets in order. safe mode failed to work as did all the disk util recommendation. It finally booted off the install DVD. Hard drive icon there. Did an archive and install. I did all the disk util prior to archive and install. permissions and disk checked out ok.
Attached a USB external. started backing things up manually. SU came up and i did the combo update to 10.5.8
Restarted MBP and the drive died, not even getting to login screen, onlly endless spinning at startup screen identical to problem after dropping it. installed Leopard on external. tried to set startup disk from internal. icon not there as if drive did not exist.
After HD crash, ran diskutil in verbose mode, device not present when i used the name,
note: this is the second external drive. i did the combo update on the external and it also died. couldn't see the icon. booted into single user mode. device no found. Again, safe mode failed to work as did all the disk util recommendation.
at this time, the external is leopard 10.5, no update, firefox running with adobe flash update.
1. SU combo update, never again. use the one from the Apple website in all future updates.
2. physical inspection of inside revealed no loose connections, broken cables or wires.
3. dropped the MBP on the side of the optical drive which i had to repair and reinstall. works fine now. PRAM battery in good order.
4. looked at every discussion from every forum on here with varying results, all dead ends.
if the drive isn't spinning or responding, is it dead or frozen? is $99 for diskwarrior the next step? Will it even see the internal drive, since no other freeware or shareware recovery apps have been able to see the internal HD.
what are my options? i had no backups made, i have no firewire cable or drive, i didn't know about time machine, i absolutely must have the drive restored, or the data.

diskwarrior manual:
To build a graph for the directory of a disk, all of the following must be true:
1)The disk must appear on the desktop.
2)The disk must be an HFS (Mac OS Standard) or HFS Plus disk (Mac OS Extended).
3)The disk must be locally attached.
4)There must not be any detected hardware problems with the disk.
disk does not appear on HD. therefore i have to assume there is physical damage to internal drive, pull it
install a new one and send the old one to data recovery.
this here concludes today's discussion on "*** were you thinking when you didn't have a back up"
also, investing in Firewire drives and cables is selling out to proprietary mandates that Apple thought up as one more way to tie up its users to Apple theology. reason one i have refused to put the money out for it.
guess the man wins.

Internal Drives Disappeared- Help

G4/1.0 DP MDD with four drives filling the internal bays. The two in the upper bay, one with the OS, show up fine. The two in the lower bay, under the DVD drive, which were showing up fine after installing 10.4.7 about ten days ago have suddenly disappeared. They don't show up under disk utility or System Profiler either. Booting with Disk Warrior, one of the drives appears on the list and DW says it is shown on the desktop, but it's not. Repaired the directory, but still nothing. Finder prefs are to show all drives.
I repaired permissions many times, zapped Pram, replaced battery, disconected the drives, checked the jumpers and reseated the connections and all seems fine. About three times over the last year, using 10.3.8 - 10.4.4 - 10.4.7, these drives disappeared temporarily, but returned upon a restart. Now they seem to be gone for good, but there must be something else I can do to try and get these drives to show up/mount on the desktop. Any ideas?? My next step is to remove the drives and put them in cases to check them, but I have a feeling that the drives are OK and there's something else going on here. I think the bus that these drives are attached to are slower than the main bus, but I only use these drives for backup and fortunately most of the info is old and not important. Still, I'd like to solve this puzzle. BTW all other types of external drives, Firewire, SCSI, USB are all working fine and I disconnected everything peripheral from the CPU to troubleshoot.
Any help would be greatly appreciated.
Thanks,
MacScott
G4/1.0 DP MDD Mac OS X (10.4.7)

I had the exact same issue and did nearly all of what
you did, which are the typical troubleshooting
procedures.
This worked for me: replace the PATA cable with a
fresh one that is NOT a cable select IDE cable. The
cable select IDE has a little sliver cut from a
segment of the ribbon that makes the driver CS no
matter what the jumper setting.
I have no idea why this worked but it did. I have
not had a problem since.
Thanks, but I'm a little confused. So a new cable for each drive or are there doubles? Is this a universal cable Mac/pc? Maybe the cable that came with the drive (that I probably threw away)? Do you know the link of a supplier? Would any Apple store have these??
Knowing why this worked would relieve a little anxiety. Do these cables go bad just sitting in the cpu?
Anyway I googled PATA and I'm still not sure if I'd know the difference between a cable select and a non CS. I'll continue my research.
Thanks again!
Hmmm, swapping the drives. Maybe I'll try this before I swap the cables.
Thanks,
G4/1.0 DP MDD Mac OS X (10.4.7)

Mac G5's 2nd Internal Drive disappears

Hi,
I have a G5 with 2 internal drives,
one is called STARTUP and has apps, etc.
The 2nd is/was called MEDIA and had lots of documents
and for some reason has disappeared from my desktop
I did a restart and used Disk Utility but I am not finding it
Any suggestions please?...thank you

Hi Evan Kreeger1-
If DU doesn't see it that is usually not a good thing.
Before panicking you might want to open the Mac up and check all of the connections to the drive.
Luck-
-DaddyPaycheck

Problems installing windows on a clean Mac Pro internal drive - issues and questions

Hey,
I have a Mac Pro mid 2010 with the following drive configurations:
3x120GB SSD in a RAID-0 as Boot (OS X 10.8.6) and SSD Scratch (working files)
3x4TB HDD in a RAID-0 as Master (data) and HDD Scratch (downloads)
1x100GB SSD (Spare...to install windows on)
I have literally tried every possible way of installing Windows 8 on that single SSD...both using bootcamp and without.
I can get it installed and working, install all the drivers/updates/software...involving multiple reboots into windows. Everything seems fine, and i shut down and boot into OS X, which works perfectly as expected. BUT, when i try and boot into Windows again (using <option> key at startupand selecting the windows volume, called "EFI Boot" which i did not name) I can log in and start using apps and then 20-40 seconds later i get the BSOD.
I can't for the life of me figure out why.
It's the easiest thing in the world to partition a single OSX drive to boot windows ON THE SAME DRIVE, but i can't seem to boot stably into a standaloe internal drive.
NOTE: I prepare the Windows drive by formatting the entire thing to "Free Space" using disk utility in Mac OS X, and can see that there are no partitions (EFI or otherwise) on the drive. Then I pull all the other drives except the target drive, reboot with a Windows 8 USB drive (created by BootCamp Assistant on my macbook air, because apparently some genius thought that task was too complicated for a Mac Pro...jks) and install from there. The funny part is that i can pick out the target drive in the windows setup, it's registering as 1 disk/partition of UNALLOCATED SPACE, as expected, but there is a warming that windows cannot be installed on this drive because my computer does not support booting to this disk, and that i should check that it's controller is enabled in the BIOS.....which to the best of my knowledge is not used by intel-macs, which use UEFI. But i can still click "Next", so I do and install Windows and boot to this drive, restarting and installing software updates and drivers as mentioned above.
The BSOD seems to pop up only after i've rebooted to Mac OS X and then try to go BACK to Windows 8.
The version of windows 8 and install USB were checked using my macbook air, and they work flawlessly. ASLO that warning about not being able to boot to the drive during windows setup isn't present.
I'm wondering if the fact the the RAID volumes are a software RAID, using Disk Utility in OSX is causing windows some issues...which makes no sense.
I'll keep playing, but I'm not confident I'm ever going to find a solution.
Somebody be my hero...

Hey Hatter,
Another question for you:
I can't seem to use system preferences>>startup disk to boot into windows. When I select windows and then restart i get a black "BIOS-like" screen which then cuts out and a message is displayed that says "there is no bootable disc"
This stumped me, because I know i can boot into windows from the boot screen (holding down option and selecting "EFI Boot" which apparently is what my windows drive is called.
because of my Mac OSX Raid arrays, i had to install windows by formatting a drive to HFS+ (GUID) pratition table, then repartition to "Free Space" then using an install usb that i made with my macbook air, pull all my other drives and install by selecting the usb drive to boot from.
I went into disk utility to see if I can repair the disk, and disk utility says that the disk has to EFI partition and that we won;t be able to boot from it....which is very confusing because i can boot from it.
Windows 8 apparentl;y uses UEFI from my research....so i'm utterly stumped.
I beleive this is also the cause of my newly purchased graphics card Mac Edition HD 7950, throwing me a BSOD when i select to boot in windows from the boot menu...
Any advice would be greatly appreciated.

Can't Re-Install Lion from Recovery HD - Internal Drive Locked and Grayed Out

I can't boot into Lion on my Macbook Pro. I can boot into Bootcamp. When I'm in Bootcamp, using MacDrive, I can access all my files on my main Lion partition. I can also boot into the Recovery HD. From there I can get to Disk Utility which tells me that I need to repair my Lion partition. When I run the repair, it tells me it can't be repaired.
Given that I can still access all my files from Bootcamp, I tried to re-install Lion using that selection from the Recovery HD menu. It verifies my Lion copy over the internet. But when it asks me to designate the drive that I want to re-install Lion on, the drives (Bootcamp, Recovery and Mac) are all grayed out and all say "Disk is Locked". I'd rather not reinstall from my Time Capsule back up because of the time involved, the fact that the backup is a week old and because I dropped the !@#$ external drive with the back up on it yesterday and I don't trust it (it's making weird noises).
I've tried booting up in safe mode and ctrl-sys-r-p but all that happens is hours of watching the wheel spin. I had not set up File Vault so it shouldn't be for want of a File Vault password.
Any idea how I can unlock the drive to at least try to re-install Lion?

Thanks for the idea. I do have another Macbook at home although it's quite a bit older and I've only upgraded it to Snow Leopard, but I'll certainly give it a try. I've already tried what would seem to be about the same thing with, unfortunatley, no luck. I have an old hard drive (running Snow Leopard) that used to be the internal drive in my Macbook Pro. When I pulled it out, I stuck it in an enclosure. When this problem cropped up, I plugged it into the Macbook Pro that's giving me grief (via USB), booted up on the enclosed drive, and ran the disk utility off of that drive against the current internal HD of the Macbook Pro. All I got was the "can't be repaired" message.

Hard drive disappears and Disk Utility is not finding it

I woke my computer up from sleep this morning, launched Final Cut Pro and it threw me an error. It said there was a permissions error for one of the volumes FCP was using, then my hard drive disappeared.
It does not show up in Disk Utility, nor does it appear in System Profiler.
I took the SATA drive out of my Mac Pro and tried to mount it using an external SATA to USB dock. It spins and sounds ok, but still won't mount.
Anything I can do to revive this drive?

all of this pretty clearly indicates that the drive is dead. get a new one.

How do I recover files from an internal hard drive that is no longer recognized?

Hi there,
Any help on this problem is greatly appreciated! I have a MacBook Pro (late 2009) running Snow Leopard. Over the last few years, after having brought the computer in to get checked, it seems that the RAM cards have gotten loose (or the bottom cover of the computer gets loose) and occasionally a grey curtain will come down from the top of the screen and everything stops working. Restarting the computer is often fine but sometimes it can't be restarted and I have to take the cover off, reset the RAM cards in their slots, and retighten the cover. The computer usually works fine after that, but verifying the disk using Disk Utility will sometimes indicate there is an error and the disk needs to be repaired. Repairing it in Disk Utility is usually fine.
Last year this happened but the disk could not be repaired. The operating system could still be run, and after making a backup of all my files I reinstalled the operating system from the installation DVD, which didn't delete any of my files on the hard drive anyway.
A few days ago the same grey curtain issue happened, however upon resetting the RAM and back cover and restarting the computer, the apple logo appeared which was quickly replaced by a prohibitory sign, which stayed on the screen indefinitely. After putting in the installation DVD and trying to reinstall the operating system, when the option comes up to choose which disk to install OS X on, the internal hard drive does not appear as an option. Going to Disk Utility from the DVD, the internal hard drive appears on the left but the text is greyed out. Attempting to repair the disk gives the following error message:
Checking Journaled HFS Plus volume.
Invalid key length
Invalid record count
Catalog file entry not found for extent
The volume could not be verified completely.
Error: Disk Utility can't repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.
While I know I could completely erase and reformat the disk, I really don't want to lose any of my files (ideally). If I erase the disk but select "Don't Erase Data" from the "Security Options..." in the "Erase" tab in Disk Utility, will this keep all my files in tact and will I be able to access them later? Are there third party applications that can recover my files so I can make a back up before I delete and reformat the hard drive? I am currently running the computer through an external hard drive connected by USB, but the internal hard drive still doesn't show up in Finder (only in Disk Utility as greyed out text).
Can I recover my files?
Thanks so much!

Try using a data recovery product such as the ones listed here. Don't erase the drive or write anything else to it until the files are recovered or you choose not to recover them.
(117246)

External hard drive disappeared and doesn't mount

Hi all,
we're using a MacMini Server at work. As backup we use an external drive and Time Machine. It has been working nicely so far. However, two days ago the external drive just disappeared. It neither shows up on the desktop nor in finder or - and that's really strange - in Disk Utility. We tried all USB ports on the Mac - nothing. We connected the hard disk to four Windows computer and it worked fine (we couldn't access it as it's a different file system but it recognized a hard drive being connected).
Other USB devices work fine on the Mac. Keyboard, mouse, no problem. Just the hard disk and, that's also strange, all other USB storages also don't work. We have a USB card reader for SD cards. The card reader seems to work (the light is on), but the SD card isn't recognized. We also tried two memory sticks in all slots - they don't show up. Neither in disk utility nor in the finder.
Has anyone of you came across this issue?

had a similar problem with a SanDisk multi card reader,.. no idea why, just flakey.
- also check the CAPACITY of your cards, some card readers can only READ a card to a maximum of 'X' eg 8GB card, thus if you put eg a 16GB card in, they crash out..

Internal drive disappeared !

Help! my drive evacuated !
My external turned Internal 160 WD drive seems to have disappeared from the desktop. Although it shows up in the Utilities window, when I try to run repair disk, it prompts me that the drive cannot be found.
What happened to my drive ??? Anybody... ??
G4 Mac OS X (10.3.1)
G4 Mac OS X (10.3.1)

Hi Rachna:
Some older G4s do have a limitation on how large a drive they recognize (I think the limit is 128GB), and generally the response to this is to partition the drive into chunks smaller than this, which is something Disk Utility should be able to handle.
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Andrew

Internal drive disappeared. Shows up as "Media" & 0 bytes

I recently installed a 120GB SSD drive instead of my 640GB rotational hard disk drive. I then removed my optical drive, and put the 640GB drive in its place using an internal adaptor that fits into that space. I installed OS X on the 120GB drive. Everything worked fine for a few days and all my data was intact in the older 640GB drive. I was able to copy files from it and copy files out of it without any problems.
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Attached screenshots of Disk Utility and Sytem Information

Yes, even tried it on a PC, couldn't be identified. Bought a Seagate Baraccuda, and it was up and running in no time, super quiet (the other one was grinding badly). So it was the drive after all...
DirectCanada.com are charging me 15% restocking fee. I should have read their small print before buying from them! Got the Seagate at Best Buy, easier to deal with someone face to face. Internet companies aren't always a good deal in the end.

Image icon on internal frame disappearing and re-appearing

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Thanks.
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Hi,
I attempted the Disk Utility Repair but it did not work.
So I disabled the application 'StickyWindows' and this resolved the problem.
Hope this helps.

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Yes. The actual disk size is 80GB, but in disk management it only shows 7MB
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Roger Lu
TechNet Community Support

Internal drive disappeared and no longer recognized???

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