Ext USB Drive + Ultra 10

I'm trying to access a 20GB Pocketec external USB drive from my Ultra10 (SunOS 5.9) and still learning UNIX.
I've read all the material I can including the USB FAQ at http://www.sun.com/io_technologies/USB-Faq.html and after installing all the latest patches and rebooting, prtconf -D reveals:
pci, instance #1 (driver name: simba)
usb, instance #0 (driver name: usba10_ohci)
pci108e,7063 (driver name: sunpci2drv)
When I turn on/off the device, the file '/dev/usbmass-storage0' is created/removed. I tried to format the drive via format -e (item 1under USB Storage of the USB FAQ). After doing so this is the result.
c1t0d0 <SUN0669 cyl 1614 alt 2 hd 15 sec 54> DataStor
/pci@1f,0/pci@1/usb@1/storage@2/disk@0,0
The Removable Media Manager shows three items rmdisk0 s0, rmdisk0 s1, rmdisk0 s6 indicating that the unit has 676823040 Bytes available on 1632 cylinders, but it is a 20GB drive!
How do I get this to use the full 20GB with only one partition?
Thanks for any help!

You might try reformatting the drive in Windows.

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10.7.5 Have to Force Eject Ext USB Drive After Sleep

Macbook Pro, Late 2011 (USB 2)
I'm finding that I always have to force eject two different 1TB ext USB HDD's after the computer sleeps. Sometimes I think it's even only after the drive spins down for a while.
Most often it's after I let Time Machine backup my laptop overnight.
I thought it was just this drive, until I got a new drive and it has the same problem, though it's not used for backups.
I've been unsuccessful trying to determine what may be using the drive as the eject error states is happening, but maybe that would help me understand if this is a legitimate problem or a bug. Force ejecting has had no noticeable effects, though it makes me extremely nervous on a backup volume. The other disk is a huge sample library that's not written to unless I add samples, so I don't force ejecting that one as much.
In searches for this problem I have only turned up drives that eject spontaneously.
Thanks for any help.

OK, so a new search in here, not via google, found this:
sudo lsof /Volumes/{volume name}
result:
COMMAND PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mds      67   root   21r   DIR   14,6      544    2 /Volumes/Backup_1TB
Finder 152 andrew   55r   DIR   14,6      204   88 /Volumes/Backup_1TB/Backups.backupdb
So it looks like spotlight or finder. I'm not browsing the backup volume, but it looks like it thinks I am. I know there are lots of spotlight issues, too, but I;m not sure if that's the case here.
I did try:
mdutil -V /Volumes/Backup_1TB/ -s
/Volumes/Backup_1TB:
    No index.
/Volumes/Backup_1TB/Backups.backupdb:
    No index.
So it would appear that spotlight isn't doing anything...

Time machine - ext USB drive - failure

After reformatting & partitioning an external USB drive, I can't get Time Machine to do a back up on it (I've been using TM on several macs, including this one, and this drive, for years). The backup begins and after copying a few GBs of data, I get the message "the backup was not performed because an error occurred while copying files to the backup disk"
I have repaired the disk with Disk Utility, without success. I've erased the disk with Disk Utility & then repaired it. I've restarted many times. I can't see what the problem is.
The mini's internal HD is 320 GB; the external drive is 1TB, in 2-500 GB partitions. One partition is used for TM, the other for a daily SuperDuper backup. The SuperDuper backups are working fine.

As Mr. Ross pointed out above, start Console and check the logs. Find the error message "The backup was not performed because an error occurred while copying files to the backup disk," then look for preceding related errors. In my case I saw a bunch of Disk I/O errors that turned out to be a defective hard disk. Every time the backup got to a specific size (and presumably a specific location on the drive), Time Machine would fail and the disk would occasionally unmount by itself.

Ext hard drive no longer visible in Windows XP via Airport Extreme

Hey everyone,
I am running a Windows XP Pro machine in my network. I have a LaCie 500gb ext USB drive plugged into my Airport Extreme. It is formatted in Mac OS Extended. It has always shown up with my other drives on my PC under the "My Computer" window. Now it has disappeared out of nowhere. Nothing was installed/changed. I host files on that drive that I access from my Windows machine and I cannot for the life of me get it to show up again. I understrand that Windows doesn't read Mac OS Extended... If I plug the drive into my PC directly it does not show up. But for some reason it has always worked through the Airport until now... Was it just dumb luck until this point?
Anyone have any ideas?
Thanks!

HDDs, formatted in Mac OS Extended, are shared out using the SMB/CIFS file sharing protocol to Windows or Linux-based network clients. As you know this format is not readable when connected directly to a Windows PC.
SMB/CIFS is the common sharing format used by Windows to access any network drive so that shouldn't be the issue. Have you tried mounting/mapping the drive on the PC? Please check out the following Apple Support article for details.

Is there a possibility to download files directly to the external usb drive in Firefox for Android?

I have the Android device that support external usb hard drive, when I want to download some files via Firefox there are only two possible "places" where I can put the files - external memory or SD card. It will be nice if there would be an option to save file on ext. usb drive.

Hi Nix_N1:
Yeah I don't know about this and I don't have an Android device that supports USB storage.
What Android device are you using and what operating system (Jellybean? Ice Cream sandwich ?)
I asked the Mozilla QA folks and they said Firefox for Android uses the Android platform download directory so the USB drive *should* show up if it registers properly with Android.
They suggested the following:
# removing the SD card and seeing if it shows up in place of the SD card.
# perhaps changing the following preference (type "about:config" in the url bar without the quotation marks)
''' browser.download.dir'''
will fix it ('''WARNING:untested and unsupported but hopefully this might help''')
Regardless I suggest filing a bug at (I looked but couldn't find a bug that corresponds to this):
https://bugzilla.mozilla.org/enter_bug.cgi

Can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

can i use my ext hard drive USB 2 on the the new macbook pro laptops with a USB3

stephan ach wrote:
but i read that there are lots of problems with the new macbook pro. i have all my data on ext. la cie hard drive. i wont have a problem reading them?
What problems specifically? If you have a problem you should start your own thread and explain the problem in detail.
External USB devices including hard drives and DVD work fine on the new Macbook Pros.

Cant make bootable USB Drive / Ext HD

My hard drive gave out on me the other day, so i went and purchased a new one. However, my optical drive went dead a while back, so my only option to install the OS was via USB or Ext HD. I bought an ext disk drive, but i couldnt get it to run the installer when i booted up (Apple told me that installers wont work on USB ext disk drives) It DID recognize it when the computer was booted up, so i made a CDR of the Snow Leopard CD. I then looked on forums as so how to make it bootable. I cleared an ext, partitioned it, and selected GUID from options.
Now where i run into trouble is here: I went into restore and dragged the cdr to the SOURCE field and the drive to DESTINATION. nothing would happen. i researched and found out that the cdr had to be a dmg. So i converted it. Now when i did it again, i got an error. I went into "scan image for restore" to see if the dmg was the problem, and i get the error: Unable to scan "Mac OS X Install DVD.dmg."(Invalid argument).
Im assuming that i either didnt make the cdr correctly, or i converted it wrong. I still have copied of them both. Any help would be appreciated....

If your optical drive isn't working how did you make a .dmg of it?
Now, what you can do is take the DVD and your external HDD to a computer with a functioning optical drive. Use the Restore option of Disk Utility to clone the DVD to the external HDD:
Clone using Restore Option of Disk Utility
1. Open Disk Utility from the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4.Check the box labeled Erase destination.
5. Select the destination volume from the left side list and drag it to the Destination entry field.
6. Select the source volume from the left side list and drag it to the Source entry field.
7. Double-check you got it right, then click on the Restore button.
Destination means the external drive.
Source means the OS X DVD.
Be sure your external drive has been prepared correctly:
Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.
Message was edited by: Kappy

I am considering purchasing a new Mac desktop. I have, at present, a Liteon 851S ext CD/DVD write and a Maxtor 3200 USB ext hard drive. Will these work with a Mac desktop? My local Apple store could not answer my question.Happy New year to all.

I am considering purchasing a new Mac desktop. I have, at present, a Liteon 851S ext CD/DVD write and a Maxtor 3200 USB ext hard drive. Will these work with a Mac desktop? My local Apple store could not answer my question.Happy New year to all.

Yes the Mac can read that drive but you would need to Copy the data off of it to the Mac as apposed to Move, which implies Deleting them from the drive as they were transferred from the external to the Mac. Since the Mac can Not Write to NTFS drives it can't Delete anything as that is really a Write operation, IE Making changes to the NTFS formatted drive.
Once you have that Data on Both your New Mac and you Older Windows PC you can format that drive to work on both system.
If you want to and plan on doing that post back and I'll explane how, it is simple but should be done on a Windows PC.
If you only plan on using it on the Mac from now on that is fairly simple also and is done on the Mac, Once you have the files from it stored on the Mac.
Yes you could burn those photos to DVD but that is just a waste of DVDs, you don't need to.

Relocating Movie and Music directory to ext. USB drive

I would like to move my "movies" and "music" directory to a different external drive.
By default Tiger (10.4.4) has a user directory, and inside there are the folder I'd like to relocate.
Reason being is that iWork/iLife/iApps only read the users home directory for those folders. i.e. importing a photo to "Keynote" will only allow you to use the media panel. So I have to go the insert other file route. I'd like to use the "media" payne to view the files, but I'd like the files to be located on my external USB drive so I can take them with me on my limited hard drive space powerbook
Is there an app that will allow me to tweak the home directory file folder locations so that the iapps will still work? Yes, I know i can get teh files into the iwork/ilife apps but it's a few steps to do it, plus I can't really browse the files themselves.
I know in "ahem... windows xp" it can be done to move the location of the "My documents" directory, but can it be done in Tiger 10.4.4?

For music, you can store your files on a different HD and just change the Music Folder location setting in iTunes to the new location. {iTunes>Preferences>Advanced>General tab}
The library database files can then remain on your main HD while the media files are someplace else.
Just copy the whole iTunes Music folder to the external drive then change the location setting.
For movies making an alias may be the easiest way to go about it... Move your Movies folder to the new drive and then create an alias to it an place the alias in your home folder and rename it to Movies.

I have 3 older ext. hard drives that I've utilized many times. Today while searching for old files, one of the three is no longer recognized by my PowerMac. Any suggestions?

I have 3 older ext. hard drives that I've utilized many times. Today while searching for old files, one of the three is no longer recognized by my PowerMac. The drive is not listed in Disk Utility. Any suggestions?

Is the computer in you equipment line:
Dual Core Intel Xenon
(which is not a PowerMac but a Mac Pro) the one you are asking about, or do you have an older PowerMac?
If a Mac Pro, their forums are here:
Mac Pro
and, as Mac Pros have a totally different architecture from the pre-2005 Macs this forum covers, you may not have the same issues that can affect the older models. If someone didn't notice your equipment line, you could get advice that doesn't apply.
If you really have a pre-2005 PowerMac, read on.
If the stubborn external is USB and does not have its own power brick (i.e., it gets power only from the computer's UBS ports--"bus powered"), it may not be getting enough power. As electric motors age, they can demand more power than when new, and the power available on any USB port is limited.
The typical workabouts to making a computer recognize an aging, bus-powered USB drive are:
Get a powered USB hub (has its own power brick
Get a "Y" USB cable: 1 Meter USB 2.0 A to 5 Pin Mini B Cable - Auxiliary USB "Y" Power Design for external hard drives.
The second gets power from two USB ports on the computer and often that's enough.
Remember that the USB ports on your keyboard seldom provide enough power even for a thumb drive, so be sure to use the USB ports on the back of the computer.

New Firewire 800 External Hard Drive and how to use old External USB Drive

Hi All,
I have a new LaCie d2 Quadra Hard Disk hard drive 500 GB - FireWire / FireWire 800 / Hi-Speed USB / eSATA-300 on the way, when it arrives I plan to use it as my Time Machine Backup drive with the FireWire 800 connection. I am currently using a Seagate Free Agent USB 2.0 320 GB external drive as my Time Machine disk. The reason for upgrading is the USB drive is slow slow slow! I am not concerned about the data on my old drive and will just wipe it clean using Disk Utility. What I would like to do is use the old drive to archive iTunes 7.7.1 and Aperture 2.0 music and photographs. Can someone give me an idea how to go about doing this?
Thanks!

Hi, yes that will copy the whole iTunes..including everything in iTunes..BUT, as you add to your iTunes on the Main HD, with the ext HD I think you will have to manually update anything added. Or dragNdrop the whole thing again.. You could also locate you iTunes music Library & just copy that across..With images once again find your iPhoto library & just copy that across..L

Will only support one USB drive at a time

Background
This is happening with a Mid 2007 Mini, OS X 10.7.4.
I use this Mini soley as an iTunes music server. The OS is on the internal drive. Music is on a separate drive, as is Time Machine. No keyboard is connected. I do all maintence wirelessly via screen sharing from another Mac.
Recently I changed the drives from conventional ext. FW hard drives to ext USB SSD. The USB enclosures are USB2/3 "Hornet" brand. The SSDs are Samsung 256GB 830s.
The Problem
Only one USB drive will stay mounted at a time. Both drives will initially mount but once one is put into use, i.e., play a song or start a Time Machine update, the other drive will unmount and I get the nasty "You disconnected your USB drive improperly...." I've seen the threads on USB drives randomly unmounting. This is not that issue. My drives do not randomly unmount; one will unmount as soon as the other is in use. (The unmounted drive stays unmounted. It does not remount when the other drive is no longer in use).
The drives came with USB cables that had dual ends, one for data/power the other power only. The problem occurs regardless of whether I use just the data/power or both.
My initial thoughts are:
1) It's a power issue and the Mini can't support the power requirements of both drives simulateously. I need an A/C adapter.
2) It's an incompatible enclosure (even though it said Mac compatible, who knows if it was actually tested and not just presumed).
3) Crappy cables.
The Question
Since testing any of these hypothesis will cost me $ (and time to buy -- and return if unsuccesful) I'm hoping someone here has experienced something similar to guide me to the fix a bit quicker. Am I close here, or could it be something else?

I believe Bus powered drives are for the birds, & more often a problem on Macs than PCs, get a good AC powered USB hub... or two.

I have just bought a macbook pro and i want to use an ext hard drive with it which i previously used on a windows computer, but when i plug it in it doesn't show up on my macbook pro, I've wiped it and just need to format it but don't know how, help

i have just bought a macbook pro and i want to use an ext hard drive with it which i previously used on a windows computer, but when i plug it in it doesn't show up on my macbook pro, I've wiped it and just need to format it but don't know how, any help would be much appreciated

Try the other USB port. If it still doesn't show up in Disk Utility then there may be something wrong with your Mac. Try something else in each USB port and see if it is seen. If the other thing, like a USB thumb drive, does show up in disk utiltiy then the USB ports are fine.
Power down the system and restart with the drive connected, go to DU and see it it is seen.

Cannot mount external USB drive with FDisk_partition_scheme

Due to some recent mac issues in my lab, we updated one of the computers to Maverick 10.9.4 from Snow Leopard 10.6.8 yesterday. Anyhow, this seems to have erased the ability of the mac to read or mount several identical USB drives with the NTFS format (WD My Passport Ultra 500GB USB3.0). It could do it yesterday when it was OSX 10.6.8, but not today (OSX 10.9.4). The drives still work fine on other OSX 10.6.8, Windows 8.1 and Ubuntu 14.04 computers (this is appears to be a problem with the Maverick 10.9.4 operating system itself, rather than the flash drives which work flawlessly with every other computer I've tried). I want to remove data from the computer to create backups on the USB drives (no, I don't want to create an online backup or buy a new set of USB drives).
diskutil can see the drives, but cannot verify or repair them as they lack a GUID (GPT) partition scheme. I'm assuming this is the root of the problem. Manually mounting the drives does not work. Installing the ntfs-3g driver also did not work (I was using this to write to the NTFS drives until we upgraded OS's). Installing the WD Passport drivers for OSX also did not work. How do I get the mac to mount these drives?
I could reformat one USB drive and then copy to the others, but this would be extremely inconvenient and take days of copying files back and forth (and would prefer to fix the mac rather than go through this with every NTFS drive I own). If I did this, the FAT32 hard drive format would not be suitable, as format is unable to handle the extremely large sequencing datasets I need to transfer. I'm not super familiar with hard drive formats, but in the event we cannot get Maverick to actually work could someone possibly suggest a format able to handle large file sizes (the largest file I need to move is ~60GB) and be compatible with Windows 8.1 / OSX 10.9.4 / Ubuntu 14.04 as well?
Another workaround I thought of would be just to install an Ubuntu partition on the mac and get the files off through the Linux install. Which is also inconvenient, but would probably be faster than trying to reformat the drives and copy everything over onto them again given the amount of data I want to transfer.
Unrelated, but is there any way to view files and folders in the OSX root directory besides through Terminal? It seems like this functionality was also removed when we "upgraded" from Snow Leopard. (At this point, if it were up to me I would wipe all of the macs we own and replace them with Ubuntu... even the most minor of tasks always require some sort of workaround with them... at my wits end here ).

Yeah this definitely appears to be a problem specifically with this mac. It's been having all sorts of weird problems lately, and we figured that upgrading to Maverick might fix them (but instead we got new problems).
To give an update on this, I ended up reformatting one of the drives to HFS+ and disabled journaling. It now recognizes the drive again, and I'm pulling the files off that way. I looked at exFAT, but it looks like HFS+ has much better Linux support (Windows is read-only but that's only a minor annoyance, as the algorithms to process the data only run on UNIX machines anyways). It's a shame I couldn't keep using NTFS (had to copy over literally EVERYTHING again...) but whatever. Again, no solution for the issue (where this mac can't read NTFS drives).
@rkaufmann87 - To give a bit more explanation, we recently had to disable online backups because apparently the sheer amount of data causes Time Machine to freeze the computer and fail every time it has a scheduled backup (original issue we thought that upgrading to Maverick would solve... didn't work). The hard drive has been having a lot of issues when it begins to reach max capacity as well. So I am pulling off all of my files to external hard drives and deleting the local copy before we attempt to back up online again. And the data would probably take me a year and a lot of money to recreate (for the curious, it's high throughput sequencing data). I'm choosing not to take any chances as a result.

I formatted my ext hard drive and changed it to mac os x extended(journaled). then i put in all my data back. after a while, i insert the hard drive but my macbook cannot read it. plz help

i formatted my ext hard drive and changed it to mac os x extended(journaled). then i put in all my data back. after a while, i insert the hard drive but my macbook cannot read it. plz help

SanandaDutta
tried on a different mac. The same problem exists.
If that is the case, its extremely unlikely you have a bad USB cable on the seagate, rather as I mentioned earlier a bad SATA bridge card.
If the Seagate 1TB USB external wont open on either Mac and youve verified same (try a diff. USB cable if you have one however this is nearly never the case),....then to get the data off that HD (unless it is dead which is also extremely unlikely),......then you would need to extract the HD from its case and insert same into either a HD dock or USB HD enclosure.
8 out of 10 seemingly dead inopperable 1-3+ year old external HD are perfectly fine, rather the cheap 50 cent SATA bridge card fries and dies (alas)
reply back if you need help in extracting same.

Ext USB Drive + Ultra 10

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