Lacie firewire 800 external hard drive not mounting in mac os 10.4.8

I have a pm g5 Dual 2ghz system ,i have connected an firewire 800 lacie 1tb external hard drive to the system,now the problem is it is not mounting on the desktop shows in the diskutility repaired the disk say's disk volume ok any way to mount the external hd on the desktop

Hi Veena, Welcome to Apple Discussions.
And you've tried choosing the volume and pressing the "Mount " icon on the tool bar of Disk Utility?
Have you shut down your Mac and disconnected your firewire cable from both ends and let it sit about ten minutes then reconnect and try. Also, it is important to disconnect the AC power to your Mac, this helps to reset the FireWire port(s).
Do you have TTP or DW, both of which you could use to try to mount it.
It is also possible that you have a bad cable or a bad port, do other FW devices work?
-mj
[email protected]

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External hard drive NOT mounting to mac

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Hi, first timer here so apologies in advance.
i have to different brand external hard disks and they both show up fine with a firewire connection. the trouble is that i need to use the usb connection and neither show up. (shows up in system profiler though but not disk utility.) why USB if i can use Firewire? I will be using the disk to connect to a Wii console via usb port and the Wii is not recognizing either disk either?
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Hello Bob,
Thanks for your reply.
Unfortunately it does not show up at all in "disk utility". But appears in System Profiler under USB. This is true of 2 different external hard drives that mount fine with the firewire cables. One is a 3.5 inch and the other is a 2.5 inch portable. The USB cable is not faulty as tested it with another USB peripheral. Now a big believer in coincidences. Am i doing something wrong?
any other thoughts?
thanks again

External hard drive not mounting

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Hello,
I use a 250 gb Lacie external hard drive (firewire) for backup. For the past week, the external hard drive has mostly not been mounting on the desktop.
I don't think it's a power issue, because after turning the unit on both the light indicating power turns on and I can hear the motor operating.
As indicated on the Lacie web site, I went to disk utility in system preferences and repaired disk permissions for my Mac's hard drive volume. That doesn't seem to have made a difference.
Does anyone have any other suggestions as to what I should do?
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Hi gavvx, and a warm welcome to the forums!
Feel free to start a new topic of your own will get more individualized attention, and many more helpers!
It can be hard to sometimes find where to start a New Topic, so here's the link...
http://discussions.apple.com/post!default.jspa?forumID=758
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Hello, Please help me if you can:
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Hi, Brian, and welcome to the Discussions!
You might perhaps launch System Profiler (from Applications/Utilities) and see if the device is listed there under the FireWire heading in Hardware Overview.
Can you hear the LaCie spin up when powered on?
You might download the free trial version of Data Rescue II and launch it to see if it recognizes the drive. This software often does when DW or Disk Utility won't. If it does, run a scan with it to see if the data on the volume is viewable.
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I am running an emac 1ghz powerpc G4 with 768MB sdram
and version 10.4.9
I have an external hard drive that up to a few days
ago ran smoothly. It contains all my itunes, iphoto,
and imovie libraries.
Now it will not mount. It lights up, it runs, etc
but I can't use it. I tried restarting machine etc.
No avail.
it is a usb drive. Today I took it downstairs and
plugged it into my daughter's windows xp machine. It
recognized it right away (I was shocked too) and
everything is there good as before.
I plugged it into every usb port in the emac and
nothing. I am using the same cord on the xp and it
works fine.
Any idea what it could be and how to fix it. I read
on hear a lot to use disk utility. However when I
run it it just freezes. When I turn that external
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Hi Veena, Welcome to Apple Discussions.
And you've tried choosing the volume and pressing the "Mount " icon on the tool bar of Disk Utility?
Have you shut down your Mac and disconnected your firewire cable from both ends and let it sit about ten minutes then reconnect and try. Also, it is important to disconnect the AC power to your Mac, this helps to reset the FireWire port(s).
Do you have TTP or DW, both of which you could use to try to mount it.
It is also possible that you have a bad cable or a bad port, do other FW devices work?
-mj
[email protected]

External Hard Drives not Mounting after Yosemite Upgrade

I've just upgraded to Yosemite, and none of my external (USB) hard drives are mounting (they don't even appear in Disk Utility).
Any ideas?

MacBook Pro 2009. 250 SD, HD 8Gb Ram.
I have had this issue for about a year...with no resolve!
Apple and the User community have not been able to solve issue.
I have had to work around it since the Oct 2013 Mavericks upgrade which “killed” (rendered unmountable) both my USB and Optical drives.
Hundreds of replies and remedies have not corrected my issue. Hundreds of replies stating that if there was a global issue it would of been fixed by Apple, not true. And dismissive replies stating that there must be a hardware issue are very discouraging.
So now, hoping to help the voiceless masses, I'm forced to share my experience.
As I stated, I have been having the issue since one of the Mavericks upgrades. The upgrade rendered externally attached drives unmountable...They are all seen in Disk Utility. They are just not mountable. Regardless of the flavor of the disk format, either Mac or PC, they are found, seen and refuse to mount. I can see them using Terminal commands, I can see them in System Report. I can reset all the memory I want...turn it off, reset, sleep, turn on, restart...NOPE...And the optical drive takes in disks but ejects them after an attempted mounting. Keep in mind, there are no physical issues with either USB or optical drives.
So now...I have had enough and need to correct the issue or buy a new equipment - starting to get into software development and need working equipment!!!
For the past month, I have been visiting the Apple store to assist in my issues...Back Story: I'm an IT Field Tech for the largest department store in the country and I have the good fortune of dropping in the Apple store anytime I want...The Geniuses booted the MB with a bootable image of Mavericks, and the USB and Optical drives WORKED fine...So, after I had stumped the Geniuses with my problems, we agreed that we would attempt to format and re-image the MacBook...Fine, do it, it's backed-up, how you ask? - Via my wireless My Book Live 3T drive, which only took 24 hours to backup, AKA Time Machine!
Great news! The re-image of Mavericks proved to work! I WAS able to mount external drives attached! How is that possible? Don't know, don't care! It just worked! So happy!
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BUT NOW THE USB AND OPTICAL DRIVES FAILED TO MOUNT!!!
Great now what? I know, I will just re-image and start again...WAIT, I don't have a Mavericks Install Disk, no problem, I will just create a bootable USB drive with the Mavericks Install Image I downloaded onto my MB this month...NO YOU CANNOT, because you have no use of the USB drives!...And, Apple stopped making OS CDs back in 2009...Oh, and that wouldn't of done me any good, because the optical dive was unusable, anyway!
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And so, I, again, attempted to do a Time Machine restore, via WiFi, this time it took 24 hours to restore...AND it worked! All apps and personal files transferred without issue, So happy! Put the laptop in Sleep and left it home and went to work! Came back from work, tested the system without issues. Rebooted...USB and Optical drive are NOT MOUNTABLE!
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I would just stop restoring from a Time Machine backup, but the only way to get into the TM image is to use Migration Assistant. I cannot view the date in time of the image in TM's Star Wars time line. So, I'm forced to back up everything from the image in Migration Assistance. Not sure that it being an encrypted image has anything to do with it...
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External Hard Drive not Mounting any more

Hi all,
I have noticed since couple of kernel updates, my external hard drive - plugged via USB doesn't get mounted any more. To access the drive I need to reboot the computer with the hard drive switch on.
See below for the dmesg output, regular usb keys get mounted normally, I have check autofs set up and it seems fine compare to the wiki,
Many thanks for taking the time to read my topic,
Looking forward for your replies,
[ 37.753349] usb 2-6: new high-speed USB device number 4 using ehci_hcd
[ 38.139340] usbcore: registered new interface driver uas
[ 38.175765] Initializing USB Mass Storage driver...
[ 38.175829] usbcore: registered new interface driver usb-storage
[ 38.175830] USB Mass Storage support registered.
[ 38.240086] scsi8 : usb-storage 2-6:1.0
[ 38.240226] usbcore: registered new interface driver ums-cypress
[ 44.726882] scsi 8:0:0:0: Direct-Access ST325082 3A PQ: 0 ANSI: 0
[ 44.727768] sd 8:0:0:0: [sde] 488397168 512-byte logical blocks: (250 GB/232 GiB)
[ 44.728724] sd 8:0:0:0: [sde] Write Protect is off
[ 44.728727] sd 8:0:0:0: [sde] Mode Sense: 33 00 00 00
[ 44.729729] sd 8:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 44.753026] sde: sde1
[ 75.466677] usb 2-6: reset high-speed USB device number 4 using ehci_hcd
[ 75.591741] sd 8:0:0:0: [sde] Attached SCSI disk
[ 2243.446832] usb 2-6: USB disconnect, device number 4
[ 2278.086455] usb 2-6: new high-speed USB device number 5 using ehci_hcd
[ 2278.211117] scsi9 : usb-storage 2-6:1.0
[ 2285.078375] scsi 9:0:0:0: Direct-Access ST325082 3A PQ: 0 ANSI: 0
[ 2285.079220] sd 9:0:0:0: [sde] 488397168 512-byte logical blocks: (250 GB/232 GiB)
[ 2285.080209] sd 9:0:0:0: [sde] Write Protect is off
[ 2285.080212] sd 9:0:0:0: [sde] Mode Sense: 33 00 00 00
[ 2285.081222] sd 9:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 2285.101763] sde: sde1
[ 2285.105212] sd 9:0:0:0: [sde] Attached SCSI disk
[ 2316.159787] usb 2-6: reset high-speed USB device number 5 using ehci_hcd

Yes I have checked System Settings -> Removable Devices - but there is no option for an external hard drive.
And yes it is a ntfs drive, but as I said it worked before couples of updates ago, and just to be sure I checked ntfs-3g - it is installed.
Oh, and I should have said, checking /dev/by-label the drive appear there once turn on, but doesn't get mounted, I use to have a line in the fstab file, but I removed it because it tried to mount it during booting process, and it work anyway.
Any other advice?
Last edited by sweetthdevil (2012-01-24 19:03:00)

Lacie firewire 800 external hard drive not mounting in mac os 10.4.8

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