Mounting External USB Hard Drive

Probably been asked a million time but I've searched the manual and database and haven't been able to solve my problem.
I have a new Airport Extreme dual band). It has a direct ethernet connection to my main iMac. Everything fine. Am trying to attach a Seagate 1.5TB USB FreeAgent Drive. I've got it hooked up. It shows up in the Airport Utility b ut I can't for the life of me seem to be able to get it to mount. Eventually I want to use it as my TimeMachine Drive.
Any suggestions much appreciated.

I had forgotten about the partitioning issue with hard drives for Time Machine.
Again my lack of knowledge about "servers" makes me ask the questions:
1) Can I partition the drive while it is attached as a server or should I hook it up directly to my Mac.
2) If I remember correctly the drive needs to be formatted as journaled. I thought this was different than HFS+. Also I can give it a single partition correct?
Again thanks

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External USB hard drive doesn't mount until reboot

Hey there. I bought an external USB hard drive (a 250 GB drive by ComStar) last week, and I'm having trouble getting it to mount. The first time I plug it in, it works fine and shows up on the desktop. When I remove it (having properly ejected it first) and plug it in again later, it doesn't show up. It's not on the desktop, it's not in Disk Utility, and it's not in /Volumes (via the Terminal). If I reboot my Mac, it's there again.
Has anyone else had this problem with external drives? Are there any solutions or workarounds?

The first time I plug it in after a boot up. It doesn't matter if my Mac has been up for three weeks -- if it's the first time I've plugged in the hard drive since the last reboot, it always works perfectly.
It's very strange and annoying. It's almost like it's not getting ejected properly.
That being said, I just ejected and unplugged it, waited five minutes, and plugged it back in. The stupid thing worked this time. It's driving me nuts! I don't mind things that don't work, but things that work sometimes are really frustrating. If no one else is having this issue, it's probably something unique to this particular drive.

External USB hard drive not being recognized

Hello! I'm sure this has been posted before, but excuse my naivety with this sort of thing...
I have a mac mini 10.5.6 (1.83 GHz Intel Core 2 Duo) and I run the Time Machine function to an external usb hard drive. The hard drive worked fine (plugged into the usb port on an older keyboard), but I went out and bought a new aluminum apple keyboard (because they look so cool ^_^ ) - I plugged the external usb drive into the keyboard and it wasn't recognized, so I tried plugging the external drive directly into the mac mini, but it is still not recognized. It is not showing up in Disk Utility or in System Profiler
Help? I'd hate to have to give up this fancy keyboard...
Thank you!
Dr. E

I believe I had my external drive plugged into the (old) keyboard because with the old mac that I had didn't have a free usb port for it - so when I got the mini I just plugged things back in where they were. But I have always had the Time Machine back up to this drive (connected to the keyboard) though it has been slow (another reason I thought the new keyboard was a good idea).
I tried restarting the computer without the alu keyboard plugged in, but same problem of no drive showing up.
Here is what System Profiler has to say about my drive:
USB2.0 Storage Device:
Capacity: 93.16 GB
Removable Media: Yes
Detachable Drive: Yes
BSD Name: disk1
Product ID: 0x6830
Vendor ID: 0x04b4 (Cypress Semiconductor)
Version: 0.01
Serial Number: DEF107920F07
Speed: Up to 12 Mb/sec
Manufacturer: Cypress Semiconductor
Location ID: 0x3d130000
Current Available (mA): 100
Current Required (mA): 0
Mac OS 9 Drivers: No
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Not Supported
Volumes:
USB:
Capacity: 92.84 GB
Available: 53.14 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk1s2
Mount Point: /Volumes/USB
I don't know the brand or model as it has 'always' been in the case that in which it currently resides and I didn't physically buy the thing :\ I do know that no software was installed with the drive as I assumed that when I put all the old info from the original mac to the mini that it was the sort of thing that would carry over.
Sorry I'm not terribly helpful - Thank you!
Dr. E

2.5" external USB hard drive not recognized by my iMac

I have a small 2.5" external USB hard drive that my intel iMac will not mount or see. My 12" G4 Powerbook sees it fine and it is formatted in Mac OS Extended. My iMac is bootcamped and XP on my iMac sees the drive but not OS X Tiger on the iMac, (wierd) I have Tiger on both my Macs too.
Why does the intel based OS X refuse to see this external 2.5 HD. It sees a 3.5" USB one I have but not the small one. I know it is software.

Hey coby,
Well thanks for the star. Not sure I deserve it.
i then tried connecting the drive to each USB port again, and voila! i have found one it works in. I guess my computer's ports must be a little worn.
Hmm well try looking inside and see if there's some smutz in there, if the contacts are dirty or bent or worn.
i was starting to think i would have to go out and get a USB hub to give it some more power.
Is it powered off the USB? If so that actually might be a good idea since that puts a lot of strain on the connectors. Even if it's self powered it might be a good idea since it would take the strain off an obviously flakey USB.
richard

OS refuses to mount external USB flash drive. Says a piece of OS software is missing.

OS refuses to mount external USB flash drive. Says a piece of OS software is missing. The flash drive (thumb drive) usually lights up but does not go through the flashing on/off that was tyjpical when first inserting it.
I tried an external hard drive and got the same results; that is, no result, as if it wasn't connected. No icon appears on the desktop and no device shows up in the sidebar. It (10.6.8, Mac Pro Duo) had worked perfectly before this, of course.

Hmmmmm,,,,
Disconnected all peripherals. Did a Safe Mode startup and that worked fine. Very limited features, of course.
Started up with the Snow Leopart (10.6.3) disk. Used disk utility to verify permissions and ran disk repair on all three internal HDs. No repairs needed.
Ran Drive Genius and did the same things, as a double-check.
Plugged in the flash drive (thumb drive) and it came up fine (still operating the OS from the Sno-Leop disk).
I wanted to re-start with the disk and bring up the Apple Hardware Test as you suggested. I had lots of kernal panics on a previous machine, a G4 desktop, and has used that at that time (with a 10.2 or 10.4 disk). thought I remembered that you hold the D key down when starting up from the disk and it would open the hardware test, but either I remember wrong or it works different in 10.6 because it was just a normal startup.
How do I get to the Hardware Test on the 10.6 Snow Leopard disk?
Restarted without the disk and the Mac Pro desktop still showed the gray screen with what Apple calls the "prohibitory" sign, the circle with the diagonal line in it.
I decided to load the OS disk onto HD 3 and designate that as the startup disk, which I did and it works fine. The USB flash drive loads properly, opens, etc. just as it should. I haven't yet plugged in the peripherals (scanner, printer, second DVD/CD recorder, tablet, an external drive, or connected to ethernet yet. Will do those one at a time and see if any of them casued a problem.)
Am I right in thinking:
A) HD One might have bad sections. I didn't defrag with Drive Genius (26% fragged) or look for bad blocks, which I'll probably do tonight.
or B) the OS has been slightly corrupted and may need reloading
or C) I have a virus or conflict (though I haven't added anything new lately). I do have the ButtonManager loading problem for Mac. which is talked about on MacRumors site, etc. but the timing of its appearance and this problem don't match.
Apologies for being so wordy; want to get all information that may be helpful. I appreciate your interest.

External USB hard drive won't reformat, won't appear in Finder, error: Unable to write to the last block of the device message

So I just got a new MacBook Air and since I had an external USB hard drive (TOSHIBA MQ01ABD100 1TB) lying around, I decided to use it for back-up. Since I only have just the one hard drive, I decided to partition it into two - one for Time Machine backups, and one for general files (formatted FAT so I could use it with Windows). However, the partitioning failed and I ended up with a partition named disk1s2. Plus, it won't appear on Finder anymore, but it appears in Disk Utility.
I have tried to reformat it, but I always get the message "Unable to write to the last block of the device".
Here's the info about my drive:
Name: TOSHIBA MQ01ABD100 Media
Type: Disk
Partition Map Scheme: GUID Partition Table
Disk Identifier: disk1
Media Name: TOSHIBA MQ01ABD100 Media
Media Type: Generic
Connection Bus: USB
USB Serial Number: 1220069C
Device Tree: IODeviceTree:/PCI0@0/XHC@14
Writable: Yes
Ejectable: Yes
Location: External
Total Capacity: 1 TB
Disk Number: 1
Partition Number: 0
S.M.A.R.T. Status: Not Supported
And here's for disk1s2:
Name: disk1s2
Type: Partition
Disk Identifier: disk1s2
Mount Point: Not mounted
File System: Mac OS Extended
Connection Bus: USB
Device Tree: IODeviceTree:/PCI0@0/XHC@14
Writable: Yes
Capacity: 999.86 GB
Owners Enabled: No
Can Turn Owners Off: Yes
Can Be Formatted: Yes
Bootable: Yes
Supports Journaling: Yes
Journaled: No
Disk Number: 1
Partition Number: 2
Here's what it says when I run diskutil in Terminal:
Device Identifier:        disk1
Device Node:              /dev/disk1
Part of Whole:            disk1
Device / Media Name:      TOSHIBA MQ01ABD100 Media
Volume Name:              Not applicable (no file system)
Mounted:                  Not applicable (no file system)
File System:              None
Content (IOContent):      GUID_partition_scheme
OS Can Be Installed:      No
Media Type:               Generic
Protocol:                 USB
SMART Status:             Not Supported
Total Size:               1.0 TB (1000204884480 Bytes) (exactly 1953525165 512-Byte-Units)
Volume Free Space:        Not applicable (no file system)
Device Block Size:        512 Bytes
Read-Only Media:          No
Read-Only Volume:         Not applicable (no file system)
Ejectable:                Yes
Whole:                    Yes
Internal:                 No
OS 9 Drivers:             No
Low Level Format:         Not supported
I didn't have any data in it prior to the failed partitioning attempt, so there aren't any worries of data recovery. But I'd really like to be able to use this drive again, and save some money (external hard drives are expensive where I live). Anyone with any ideas?

I'd also like to add that repairing the disk using Disk Utility does nothing but tell me to reformat the drive. So I'm stuck in a loop here.

500 GB external USB hard drive USB 2 configuration problems

Hello Sirs.
I recently adquired a 500 Gb external USB hard drive part number PX1269E-1G50.
I have some problems with the USB 2.0 configuration in windows XP. When i connect it to an usb 2.0 port i receive the message "High-speed USB hard disk drive plugged into a non-hi-speed usb hub", and the device stays in low USB (12 mbits/s) speed. (I checked the port with another usb 2.0 peripheral and the port is working in usb 2.0 mode correctly).
I checked the PXI1269E-1G50 in others pc and i have same results. I cant get it to work in USB 2.0 mode. I also have some problems with the virtual CD partition that is always present when you insert it and mount. Exist a way to remove it ?
I only use the hard disk for daily data back-up and i don't want to use any more drive letters in my system.
The main PC is an ASUS P4P800-E deluxe with windows XP SP2 fully updated and build in USB 2.0 intel controller.
Best regards
PAMF

Hello again everybody
OK. Finally i had to send the disk to my dealer. Toshiba in Spain says there is not solution. Sorry. This is an erratic product. Sometimes with one cofiguration simply works and sometimes with a different configuration does not connect in USB 2.0 mode. I don't want such a product in my desktop... and the Virtual CDrom is impossible to turn off. (I'm not interested in security tools. I only want to make daily backups)
Thanks to everybody in the forum for your help.
pamf
[Edited by: admin on 09-Jan-2007 20:51]

Is 250GB External USB Hard Drive compatible with Mac OSX on an iBook G4?

Hello,
I just bought a Toshiba 250GB External Usb Hard Drive because the seller recommended it to telling me that it works in my computer iBook G4 Mac OSX.
I prepared it and I see it on my desktop with a folder named System Volume Information and 2.32 GB available.
I tried to copy a file and I received a message telling that the disc can't be modified.
Where can I find the instructions to initialize it if it is compatible?
Thanks in advance,
Joan
Message was edited by: jinglada
Message was edited by: jinglada

I have a feeling this is a similar problem to my 400GB Usb2 drive. I reformatted it to the default Mac format in Disk Utility and it mounted!! Try this

External USB hard drives working very slow and/or not recognized. Help!

This probably started after my Yosemite upgrade, but my external usb hard drives either aren't working well or not being recognized. It's taking forever to write files to my external Seagate Free Agent USB 2.0 through front ports and my thumb drives aren't mounting (they have shown up for a second or two, then nothing). Is there a fix? I'm on an early 2008 mac pro with Yosemite 10.10.2.
Thanks!

Do an SMC reset using this slightly-modified procedure:
Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
1.Shut down the computer.
2. Unplug the computer's power cord.
[2a. Press the power-on button to discharge the power capacitors.]
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
in all cases, the stated times are recommended minimums, and there are no maximums.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support

I can't mount a USB Hard Drive...can you?

I can't mount a USB hard drive on MAC or PC. Mac it does not mount - PC won't accept password.
Does it even work?
AirPort Extreme n Mac OS X (10.4.9) PC too

I just bought the Airport Extreme 802.11n and a WD MyBook Essential Edition 500GB to use with it as a shared disk. Reformatted it on my Mac and it works fine, but can't get Airport Disk Utility to see it. I've tried resetting everything, but no go.
The improved range compared to my old Airport Extreme 802.11b/g is great, but I've wasted my money on the disk if the Airport can't connect to it.
Why was there no explanation anywhere in the specifications that this new Airport only works with some USB disks? The way it's written is clearly designed to make you think that any external HD that connects to a USB port will work.
I too would welcome any thoughts on how to get the HD to work with Airport. Thanks.
MacPro 2x2GHz Mac OS X (10.4.9)

How to use iPad (4th gen) to edit with iMovie - but using an external source such as a USB stick or external USB hard drive

Want to use my iPad (4th gen) to edit a movie using iMovie - easy enough if the movie file is on the iPad - but what if it's too large - can I keep the source file on a USB stick or external USB hard drive and edit from there? How can you do this?

You can't export any type of file using the camera connection kit, so a USB flash drive or SD card won't work.
There are some wireless external hard drives that can be used with the iPad.
The Kingston Wi-Drive, which costs $50 for the 16 Gigabyte, and then $30 more for every 16 gigs more. It works by you turning it on and then accessing the files on it from an app that you download on your iDevice. You can access music, movies, and other stuff. No connections or anything, it works like a WiFi connection, you connect to it from the setting on the iPad under wireless networks.
Then there is the Seagate GoFlex, which some would recommend over the Wi-Drive. But this one costs $199 and had 500 Gigabytes of storage. It works the sameway as the Kingston: no wires, runs over its wireless connection. You can actually fit up to 300 HD movies on it.
Another option:
Expand your iPad's storage capacity with HyperDrive
http://www.macworld.com/article/1153935/hyperdrive.html
On the road with a camera, an iPad, and a Hyperdrive
http://www.macworld.com/article/1160231/ipadhyperdrive.html
 Cheers, Tom

External USB Hard Drive not showing up on Time Capsule

Hi all,
I have a 500 Gb Time Capsule that used to be able to detect my external USB hard drives. I had to store my things for a while and have just started using the Time Capsule again. The TC works fine, however, the same USB external hard drives I used to connect to the TC are not showing up anymore :s They show up on the desktop when I connect them directly to my MacBook via USB. I have been through most of the file sharing options in Airport Utility and System Preferences but have not been able to solve this. I can't think of any settings that would have changed from when they were showing up in the past. Any help would be greatly appreciated. Thx

yosemite won't work with ntfs drives for some reason, i've had the same issue with my toshiba. i thought ok lemme buy another one, and transfer it over maybe it's a driver issue which i've tried over and over, apple support can't figure it out.
here's a simple fix, but the problem is i have an external where all my photography and video files are stored, so i can't access them right now and it's making my life ****.
http://guides.macrumors.com/Formatting_an_External_Device
that does work and make the drive mountable now, but problem being i can't obviously reformat the old drive and lose everything. once the new drive is formatted for mac i can't plug it into a pc to transfer the files from. which is the only problem now. but formatting the drive for mac only DOES work. but you're just screwed and not able to use it ntfs. hope the link helps SOME people.

[SOLVED] Kernel panic when using external USB hard drive

I have a desktop PC with a 64 bit arch install, on a Core2 Duo 6320 CPU. I have been using (and continue using right now) a 500 GB "Iomega Desktop Hard Drive" external USB hard disk without problems. But I have just bought a 3 TB "Seagate Expansion" external USB hard drive and I'm unable to use it from my Arch install. Each time I try to format it or to copy data from the PC, Arch freezes with a kernel panic. Sometimes it freezes faster and I cannot see anything, but others I am able to see the following kernel messages, repeating several times:
[11701.205071] sd 3:0:0:0: [sdf] uas_eh_abort_handler ffff880014e13380 tag 29, inflight: CMD
[11701.221297] sd 3:0:0:0: [sdf] abort completed
[11701.221313] scsi host3: uas_eh_task_mgmt: ABORT TASK failed (wrong tag 0/256)
[11701.221323] sd 3:0:0:0: [sdf] uas_eh_abort_handler ffff880014e13500 tag 30, inflight: CMD
[11701.237550] sd 3:0:0:0: [sdf] abort completed
[11701.237567] scsi host3: uas_eh_task_mgmt: ABORT TASK failed (wrong tag 0/256)
[11701.237576] sd 3:0:0:0: [sdf] uas_eh_abort_handler ffff880014e13680 tag 31, inflight: CMD
[11701.253922] sd 3:0:0:0: [sdf] abort completed
[11701.253936] scsi host3: uas_eh_task_mgmt: ABORT TASK failed (wrong tag 0/256)
[11701.253956] sd 3:0:0:0: uas_eh_device_reset_handler
[11704.252182] scsi host3: uas_eh_task_mgmt: LOGICAL UNIT RESET timed out
[11704.252196] scsi host3: uas_eh_bus_reset_handler start
[11704.252443] usb 5-6: stat urb: killed, stream 0
[11704.358882] usb 5-6: reset high-speed USB device number 3 using ehci-pci
[11704.483206] scsi host3: uas_eh_bus_reset_handler success
Strange enough, the drive is listed by lsusb command as a 2TB but I don't think this is related to the problem (as the OS sees the 3 TB). This is the lsusb output:
Bus 001 Device 003: ID 0bc2:3312 Seagate RSS LLC SRD00F2 [Expansion Desktop Drive 2TB]
I have tried the drive on other PCs and it works flawlessly. Also tried booting Windows 8 on the same PC I have Arch installed in, and in Windows it also works perfect. I have tried using ext2 and NTFS filesystems. Tried also changing the USB cable without success. And right now I'm out of ideas. Any suggestions?
Last edited by doragasu (2014-07-03 11:06:25)

looks like it could be the UAS module , check https://bbs.archlinux.org/viewtopic.php?id=183190

Changing external USB hard drive into a FireWire Drive???

I have been reading in some of the other discussions about how it is possible to change a USB external hard drive into a FireWire external hard drive. Is this true ??? I recently pruchased an external USB hard drive only to now find out that I cannot use it to boot from. Apparently OSX will only boot from a FireWire drive ??? Is there some way to change my current external USB hard drive into a FireWire compatible drive or do I have to purchase a FireWire drive ??? Thanks.

All I can remember was an internal USB/firewire hub (for PCs, by the way), I haven't seen external adapters like cables; but you may simply ask in your local computer store about.
Yes, you can boot only from firewire drives. I was told that it is possible the new Intel Macs are able to boot from USB drives, but haven't had the time to verify this so far.
A possible solution may be to remove the harddisk from the USB enclosure and put it into a firewire case. This should work and you just need to buy the firewire case without the need for another harddisk. Just ensure that the case is able to take your harddrive (2.5" / 3.5" drives, connection interface).

Rescue and Recovery 4.3 on Win7 doesn't see a backup on external USB hard drive - Model W510

I've run the Rescue and Recovery utility within Windows 7 on two different external USB hard drives thinking that maybe it was a usb drive issue. When I open the R And R utility in expert mode I can see that both backups exist on their respective drives. I planned on updating my hard drive so I made a full hd backup and the R&R startup disc to boot the laptop from. The bios recognizes either external hard drive at boot with no problems. It shows the names and "+" sign next to drives. So I booted the drive at startup off the DVD drive with the R&R startup disc after I was sure that the bios recognized either external drives. Then when I choose a "Full" restore is of course asks me if I want to use hd, cd/dvd, or external usb drive which I choose the later. It then should show me the backup that I created earlier just as it did when I ran the utility from the Win7 environment so I can choose it to restore from. But I get a blank box showing no backups when I run the 4.3 R&R Startup disc. Again if I boot to Win7 and go into the R&R utility I can see the backup on the exact same USB external drive. Then boot off the CD startup recovery disc and it shows NO BACKUP! Help please! I want to shelf my old hard drive "as is" and create the Restore onto the new hard drive but the utility isn't working for me.
Thanks for any help.

Hmmm,
Seems like that _should_ work. Here's a way you might be able to finesse it: go to the advanced R&R menu in Win 7 and create rescue media on your USB drive. It's essentially the same process as creating the CD - it makes the USB drive bootable and puts a copy of R&R there.
There _should_ be an option to "preserve existing data" but be prepared to lose your existing backup and make it again.
Then just boot the external USB drive and see if R&R recognizes a backup image on the same drive from which you booted.
That's the way I usually migrate to new drives. Maybe it will get around your mysterious problem.
Z.
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Mounting External USB Hard Drive

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