10.10.3 cannot see my Raid 1 Drive

After installing 10.10.3 and restarting my Mac cannot see my G Raid Studio drive. I have it running as a Raid 1 and disk utility cannot mount it and it thinks it has no data and needs to be formatted??? Anyway to fix this without rising my data?

See mount section in 1st linked article.
Disk Unmount Using Terminal
Disk Utility – Force Mount Disk

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IPhoto cannot see external storage drive

Very unusual freeze-up while "repairing" iPhoto required a forced shut down. Now cannot see external hard drive with photos on it. Can you help please.

Have no idea the format of the external disk. It plugs into the back of my big monitor and has worked perfectly until I upgraded to Yosemite and iPhoto 9.8 in late December. I had difficulty setting up iPhoto at that time, and you fine folks walked me though the process in mid January. All photos were there and in the proper albums. External disk is a Seagate Free Agent GoFlex, and it is backed up on Mozy and also on an iPad Air 2.
Problem started when I simply plugged in my iPhone and iPhoto told me I had to repair my database, which I did -- it took some time. Then I had to do something with Permissions. That never ended and a Word document froze on screen while I was working on it, and when I couldn't close any tabs in Safari -- couldn't do anything, actually -- iPhoto was continuing to spin with Permissions. Finally after about 15 minutes of that, I did a hard "push the start button" shutdown. The restart took a very long time.
Since I installed Yosemite and got iPhoto working -- when it was working -- the entire computer has been a bit sluggish and slow. And for the first time ever --and I've used Macs since the 1980s -- I had a freeze yesterday. Likely unrelated, but just a data point.
(BTW, is there any way I can find the discussion I had w/you folks back when I setup this iPhoto in mid-January? Anyway to search and find it in Support?)

Cannot See FW800 External Drive in Finder (other Mac confirms is there)

I cannot see an external drive connected via Firewire 800, yet it is definitely there from two tests: 1) when I disconnect it I get the typical warning of not ejecting first; and 2) from another Mac on the network, when logged into this Mac, I can see and access the drive in that Mac's Finder. Seems weird that the other Mac can see it connected to this Mac, but the Finder on this Mac cannot. Any tips/suggestions appreciated!

I've got several drives from OWC, some using the Hitachi drive and two with Seagate drives. Most of them are FW800 or what they call Quad interface (esata, FW800, FW400, USB2). I'm not aware of any other reports of problems with OWC drives. OWC does have great tech support both at their site: http://eshop.macsales.com/tech_center/index.cfm and by telephone: http://eshop.macsales.com/Service/contact/
I move them around quite a bit to different Mac's with Leopard and Snow Leopard without a problem. Since you said the drive shows up on other Mac's (running SL?) I suspect a problem with your OS or the FW800 port on your machine (could be hardware or driver related). I'm assuming that the drive does mount properly in FW400 and USB2, right? Also, I'm assuming that you have already used Disk Utility to Repair your boot drive's permissions.
Just for drill, I always create a temporary admin user account to verify that a problem is actually in the OS and not some left over code in my user account.
If you do this, and the problem continues in the new account I'd make sure you have a bootable backup and look at re-installing SL from the boot disc (it will automatically do an "Archive and Install). I like this explanation of the changes with the SL installer:
http://reviews.cnet.com/8301-13727_7-10330467-263.html
Hope this helps.

My PC cannot see a hard drive connected by usb to my Time Capsule!

Help please.
My PC cannot see my Toshiba hard drive connected by usb to my Time Capsule. I can see the hard drive in Airport Utility. I suspect my problem may be to do with either setting up File Sharing or else mapping............if anyone can help fix this it would be most appreciated! Thanks.

Wins server is useless.. you won't have one..
Did you turn on the guest account with full read and write permissions.. ??
Can you ping the TC ip address??
Is the airport utility on the windows machine??
Do you have a mac to access the drive?
Is it real fat32 or some strange exfat which won't work?
I also wonder if it should not be formatted on directly on the TC.. or on a Mac and formatted GUID not windows type.
Sorry not all of this is logical..
If you can access the internal disk from windows.. how are you doing that??
If the external USB drive is not working.. plug it straight into the windows machine and enjoy faster better and more consistent file copying..
Share it to the network if you want network access.

IMac Finder cannot see external hard drive but Disk Utility can

I have a WD external hard drive and it has been attached to my iMac for a year or two. About two months ago I upgraded to Lion 10.7.5 and hard drive still worked. Then suddenly about a week ago the iMac no longer sees the external hard drive in Finder.
I have connected the hard drive to the iMac with different USB cables and into different ports and it makes no difference so deduce there is no issues with the cables or the ports. I have connected the hard drive to an old Macbook and it can see the harddrive and read some of the info but I really need the hard drive attached to the iMac as I store all my music and photos on the external hard drive.
I read another thread and someone asked if you can see the hard drive in Disk Utility. I tried this and Disk Utility can see the hard drive.
What does this mean? Any suggestions as to how to get the iMac to see the hard drive so I can access the data on it?
I dont really know how Disk Utility works therefore if that is any help to me.
thanks

Open the Finder.
From the Finder menu bar click Finder > Preferences then select the General tab.
Make sure: External disks is selected.

Cannot see new hard drive in disk utility

Hi-
My original hard drive (less than a year old) when down hard. I bought a new Seagate 160GB SATA drive and I cannot install Tiger (or Panther for that matter) because I have no hard drive recognized in the drive utility. Curiously, I ran Apple basic HW test and mass storage checked out okay...the test just showed passed. Seagate offered no help - I can't see any info regarding jumpers or such... SATA shouldn't need it anyway. My system is completely deviod of 3rd party items - completely stock as shipped.
I then ran the extended hardware test and received error code 2GMC /2/15: built-in.
Sounds like I'm hosed. Whatever it is, it probably took out the original hard drive.

Yes, the same thing happened to me. No, solutions yet.
Were you using Software Update to upgrade?
I've tried most of the repair methods listed here and elsewhere. I think my external hard drive (external La Cie 200 gig) was damaged by the update process. As now it can't be read by my laptop either.
Very angry about this. but i'll turn that anger into another post. Good luck, let me know if you find a way to revive disks while i look for something more powerful than Disk Utility (it bails out of even the Verify Disk process).

3 questions: 1) I am unable on my Mac Book Pro to enable iCloud Photo sharing in iPhoto preferences, why not? I cannot see my iCloud drive contents.Why not?

Having a Macbook Pro i have taken and loaded in 569 photos from my cameras and want to share using iCloud. But I simply cannot get iPhoto to enable iCloud photo sharing. What could be the cause? what should I try other than the instructions which I followed three times already as outlined in the FAQ section of the help function?

OT
Thanks for the suggestion . As soon as they hand me my laptop at the store in 45 minutes time I shall try the disable and then re boot as you suggest.
so far they sent me this; Disk has no problem.They may have more to say to me re the flash drive and results of storage diagnostics and ASDs ( what is this? ) when I see them .
The case repair is redundant to the problem I am having but if they give me a new one worth $399 i will not complain,eh.
Problem Description/Diagnosis
Issue: MacBook Pro is running extremely slow. Specifically IPhoto
Steps to Reproduce: Attempted to repair disk, no issues found.
Cosmetic Condition: Scratches to enclosure and clamshell.
Proposed Resolution: Tighten MagSafe board. Run storage diagnostics and ASDs if no trouble found with flash drive.
Estimated Turn Around Time: We'll call you in 3 - 5 days
Mac OS Version: 10.10.x
Hard Drive Size: 251 GB
Memory Size: 8 GB
iLife Version: Unknown
Employee 1178255246
Repair Estimate
Item Number
Description
Price
Amount Due
Customer KBB
661-8154
Housing, Top Case with Battery
$ 399.00
$ 0.00
S1490LL/A
Hardware Repair Labor
$ 39.00
$ 0.00
Tax
$ 0.00
Total
$ 438.00
$ 0.00

Mountain Lion cannot see fibre raid, Snow Leopard can?

Hi, I have a 3,1 Mac Pro, 8 core, 2.8GHz with an LSI 7404 fibre card. The card is connected directly to my 2 medea raids (no switch). The raids mount perfectly in Snow Leopard, but in Mountain Lion 8.2 only half of each raid can be seen in disc utility. Mountain Lion lists the fibre card as "driver installed" as well. Any help would be greatly appreiciated.

I would expect Disk Utility to still report the Physical drives, even if it could not see the Logical Volumes correctly. Does it see all the Physical drives?
If not, what kind of enclosure are they in? does the manufacturer have anything clever to say about this version of Mac OS X?
EDIT: Have you considered buying and installing Lion and installing it on another drive? It IS still available. You can buy a download code if you call the Online Store. Under US$30.

Boot up problem ; My G31TM - P35 with Windows 7 OS cannot see my SATA drive

I recently bought a new g31tm-p35 motherboard with Intel Core 2 Duo Processor. I also bought a Seagate 500 g harddrive (SATA) and installed my old IDE harddrive. I loaded Windows 7 (32) Pro OS. My problem is that when I boot up my PC, it does not always see my SATA harddrive (drive D) where my OS is loaded on. It sees my old harddrive (c) but there is no OS loaded on that drive. It then gives me a "missing BOOTMGR" error. Can anyone help?

Try another SATA data cable and ensure it's fully seated and no sharp kinks in it, ensure SATA power cable is fully seated or try a different SATA power plug from the PSU. I had a similar problem not long ago and it was due to a PSU power problem for SATA that required a new PSU to fix it.

NetBoot Cannot See internal Hard Drive

I am using a Xserve G5 PowerPC G5, I use this for my netboot server. I am wanting to set this up so that I can run netboot on client machines and still see the local hard drive, however I want to be able to unmount it so that I can reimage that drive if I want or be able to run different tech tools on this. I was able to do this once or twice however I need for this to be a little bit more consistent. The image I am using runs as a diskless image, what I’m thinking is that I want to run this image diskless I just want the hard drive to be available for me to do whatever I need to do with this, any suggestions...

afp_2U2Vgc00040A0000oM0000VU-1.2c000003 on /private/var/netboot (afpfs)
/dev/disk0s2 on /private/var/netboot (hfs, local, nodev, nosuid)
That's very weird. You appear to have both the afp share AND disk0 mounted at /private/var/netboot. That shouldn't be possible.
mrenix wrote:
Ok so then my next question is how do I correct this???
As a workaround, you could try doing a 'mount -u /dev/disk0s2'
How did you create this image (i.e. what was the volume sourced from)? A NetBooted volume perhaps? Though I don't think that's possible... :/

XP sp3 cannot see usb hard drive connected to airport extreme 802.11n

I have a sata drive that the airport utility recognizes. I attempted to follow the instructions from post HT1331 but no luck yet. I also reformatted the drive from ntfs to fat32 using vista but with the same result.
I found another post while writing this one which solved my problem. It turns out how I formatted the drive wasn't usable by AEBS.
Connecting Large USB Hard Drives to Airport Extreme
I needed to format the drive using the instructions found below.
http://www.ridgecrop.demon.co.uk/index.htm?fat32format.htm
After doing this and plugging in the drive I was able to use the drive intended. Since I had started the post I figured I would list the solution.
Cheers!

I don't think two problem are related. Now, for PC, try to disable the firewall software if you ave one. Some firewall can block it, like for ex PC Tools firewall, or ZonaAlarm. Some of them you can configure to work with disk agent.

Cannot see external hard drive in finder even though listed in Disk utility

I have a major problem with my G5 after file vault became corrupted and I had to erase the user account with all my data after consultation with an Apple Store Genius.
I have an external Iomega external back up but the finder does not list it anymore and it does not appear on the desktop. It is seen by disk utility however and I have run disk repair which says its fine. When it is not mounted, the icon next to the hard drive name (in disk utility) is a firewire external drive, but when I do mount it it appears as the unrecognized file type icon (the icon with the piece of paper with a bent corner). It also doesn't show up when I enable hidden folders.
It does however mount on my son's iMac. All my data is on this external disk and its my only copy left.
Please can you help me or point me toward a previous thread. I have tried ejecting it and remounting the HD after turning it off but no luck.
Yours
Mr Desperate

USB and FireWire Quick Assist
http://support.apple.com/kb/HT1151?viewlocale=en_US
What to do if your computer won't recognize a FireWire device
http://docs.info.apple.com/article.html?artnum=88338
Dealing with FireWire problems (drives not mounting, devices unrecognized, etc.)
http://www.macfixit.com/article.php?story=20041221081432908
 Cheers, Tom

Airbook cannot see external optical drive, Please advise

Hi guys, I have a Airbook, everything on it works, It picks up my external HDD but not my external optical drive. I am sure the
optical drive is working. Could you please provide assistance as to how I should best troubleshoot this issue?
Thank you

Do you have the checkbox checked in Finder Preferences to show "CDs, DVDs, and iPods" on the desktop?

Time Machine cannot see networked USB drive

I'm trying to set up time machine with my USB drive attatched to an Airport Extreme but the "choose backup disk" box is empty when selecting a backup drive.
I read something that said "Time Machine will not work on any network-attached storage unless it's HFS+ on Leopard being shared via AFP (not SMB)", but I'm new to Macs and don't understand what this means.
I've noticed that browsing the info of the USB disk (which incidently IS mounted on my desktop) it says the server location is at 'smb://airportextreme' etc etc. I'm assuming the 'smb' is where the problem may lie?

Hello FizzyFizz
I had been wondering the same thing, and in my research I found this, rather long discussion:
http://forums.macrumors.com/showthread.php?p=4402934
It gives a few different things to try, I have not tried any myself but they might help you.
~A

Cannot see external hard drive except in disk utility

when i open it in disk utility, all the buttons are grey, and i cannot verify or repair the disk. This happened once i updated it to mavericks.

Hi Dominic,
If this is still not mounting, it may be worth trying a PRAM reset...
http://support.apple.com/kb/ht1379
Ben

10.10.3 cannot see my Raid 1 Drive

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