I cannot mount a external DVD usb drive

Hello,
I am trying to install a extenal DVD usb in a sparc enterprise t5220 with Solaris 10. After connecting the device i got this message:
WARNING: Device /pci@0/pci@0/pci@1/pci@0/pci@1/pci@0/usb@0,2/hub@4/cdrom@2/disk@0,0 failed to power up.
WARNING: /pci@0/pci@0/pci@1/pci@0/pci@1/pci@0/usb@0,2/hub@4/cdrom@2/disk@0,0 (sd3):
Command failed to complete...Device is gone
I rebooted the server and used different ports but i still got the same message several times.
Is there some one that can tell me if this is a hardware problem or is there any procedure to install and/or mount this external device?
Thanks

USB drives can not be used to boot a PowerPC Mac so you will not be able to install new OS X; recover in the event of a major problem or repair the hard disk if it become corrupt to name a few examples if you purchase a USB drive.
Firewire performance on the Mac is also far superior to USB2.0 performance.
mrtotes

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hey,
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I am using my rev.2 air, 1.86 Mhz prosessor, 120 GB HDD, leopard 10.5.7 with a Samsung writemaster external dvd-writer, but I am having problems booting from it.
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Not sure if this will help - but whenever I need to boot from an install disc on my MBA - i turn on the MBA and hold the 'c' key until i hear it loading the disc. that's how I boot off of optical discs... worth a try?

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Asatoran wrote:
Both, no differences, i tried to boot from a windows xp's install disk on my usb dvd reader, using bootcamp assistant and tring to boot directly, but none...
This would imply that the Windows CD you have may be the problem. Have you tried this disk on another computer. (Boot the other computer with the CD, but cancel the install before it format's your hard drive.) Did this CD come with another computer? Many of those "restore disks" are not bootable and can't be used for other computers. You usually need a retail or volume license copy of Windows. (For legal reasons as well, but we won't get into that now. )
The disk is good and I teste it on another computer and I've burned another CD from my original .iso
It's a standard Windowx XP Pro disck, no upgrade, and I tried with a standard Windowx 7 Home Edition 64Bit and 32Bit, both standard version not upgrade or restore disk
And I donw' want install only windows, I want Snow Leo as primary and a small bootcamp for windows.
Which is why you definitely want to go through Boot Camp Assistant otherwise you risk loosing the Snow Leopard partition.
I know, I've just some year of IT system, but thank's for warning
No, when you are in target mode you can use DVD too, you can try it
Ok, good to know.
Just to summarize my try:
- Standard SATA DVD-RW drive (5" 1/4) connected by SATA->USB
- Standard SATA DVD-RW drive (5" 1/4) connected by SATA->FireWare 400/800
- Samsung external usb DVD-RW drive - http://tinyurl.com/y8vhu29
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- rEFIt - http://refit.sourceforge.net/
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From rEFIt website, I found that Mac cannot boot Windows or Linux from an external disk is not well-supported by Apple’s firmware, and for external disk it mean any storage device that is not considered "internal"*, that includes USB Flash drives, SD cards, USB/FireWare DVD/HardDrive, but that is not true for MacBook Air, that it maybe have an EFI firmware without that limitation because haven't an internal drive and because MBA it's the only Mac that can use MBA SuperDrive USB.

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Thanks for your time.
Regards
Mary Ann

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!http://www.build-your-own-cheap-computer.com/images/firewire.jpg!
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http://en.wikipedia.org/wiki/IEEE1394interface
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[Hope this is the correct place to post this question]
I connected my 160 GB external usb hard drive to my V240 Solaris 9 server, ran newfs (ufs), mounted it, and wrote data to the drive with no problems.
I moved it to another sparc box with Solaris 10 (build 74-1) and tried mounting it, but no luck. The logical path for the usb drive shows up in "/dev/dsk" after running "devfsadm -C" and it shows up as configured when running "cfgadm -al," however, when I try to mount the drive it eventually times out without mounting. I get the same results when I try this on the x86 version of Solaris 10.
I know that the drive still works by taking it back to my Solaris 9 server and mounting the drive.
Is there something special or different with mounting usb drives with Solaris 10?
Thanks,
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z92 wrote:
I am trying to install Windows (8, specifically, but that has nothing to do with my problem) on my MacBook Pro 15-inch, mid 2009 (3.06 Ghz Intel Core 2 duo, 4 GB 1067 Mhz memory) running OS X 10.8.2.
I have a Windows 8 ISO and a 8 GB USB drive, so it is my understanding that I should be able to create a Windows install disk on the USB drive using boot camp. This looks incredibly easy based on every tutorial I have found online, and if I got the screenshot they all show me, I'm sure I would have no trouble:
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