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May 6, 2007 at 5:58 am #2262495
Unable to recognize External USB Drive
Lockedby twinkynz · about 16 years, 7 months ago
Hi,
I have recently purchased an External Hard Drive. During a copy from my laptop to the external drive, I accidently unplugged the external USB drive.
Now when I try to use my External USB drive, it is not recognized by my Laptop.
I have tried re-installing drivers but to no avail.How do I format or fix this so I can continue to use my External USB drive.
Any help appreciated.Regards,
Sam
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May 6, 2007 at 5:58 am #2518334
Clarifications
by twinkynz · about 16 years, 7 months ago
In reply to Unable to recognize External USB Drive
Clarifications
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May 6, 2007 at 6:41 am #2518323
Depends on what happens when you plug in the USB Drive
by hal 9000 · about 16 years, 7 months ago
In reply to Unable to recognize External USB Drive
If the computer recognises that you have a USB device present go into the Computer Management Drives and format the USB Drive.
However if nothing at all comes up on the system when you plug in the device it’s likely to have been destroyed and is no longer usable.
Col
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May 6, 2007 at 11:38 pm #2522024
Very Annoying
by twinkynz · about 16 years, 7 months ago
In reply to Depends on what happens when you plug in the USB Drive
The drive is only 1 day old.
I went out and bought a 2.5″ > 3.5″ convertor today. The drive appeared and I formatted the drive.
After installing it back into the USB enclosure, it still was not recognised.
I then installed it back into my PC and formatted it as a Dynamic Disk.
Now my PC crashes whenever the 2.5″ is plugged in and it still does not work with the external enclosure.Is this a common problem? Should I be using a different method for backup instead of a USB enslosure?
Thanks,
Sam
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May 7, 2007 at 6:47 am #2521917
No this isn’t at all common
by hal 9000 · about 16 years, 7 months ago
In reply to Very Annoying
I’ve never seen something like this happen previously and if you look at the fuzzy picture here it shows what a 2.5 inch drive should look like at the connection
All I can think of is that there is a jumper on the drive causing the problems as when you use a USB Caddy for a 2.5 inch drive you should never have a jumper fitted.
But for backup this really depends on how important your data is and if you carry the HDD around as I’ve seen quite a few fail one business who I do work for was using this method daily to do generational backups and they destroyed every HDD because of a faulty USB Port and I had to take the most recent to a Data Recovery House and have the data recovered off the drive. Cost about 46K AU and that was because I have a deal with this particular company as the cost should have been much more.
If you are not moving the 2.5 inch drive and always chose the Safely remove the USB device it will work fairly well but if you get any strange noises stop using the drive immediately as you could have a faulty USB Port that isn’t supplying enough power. In that particular case it not only destroyed the HDD’s but also the USB Enclosures so now they have a powered USB Hub to work from and only ever use that to plug into. Still not the best idea but it works for them. But they are also using a powered 3.5 Inch USB Enclosure and that is far more robust and far less likely to break, It’s also much cheaper for more storage space as well but it is much more bulky to work with so it gets placed into the safe and leads a very gentle life.
Col
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July 26, 2007 at 4:27 am #2609187
Did you re-partition as well?
by 1bn0 · about 16 years, 4 months ago
In reply to Very Annoying
If the drive is not damaged completely.
I would try to re-partition the drive and then re-format again. If the format was corrupted I would expect the MBR etc. to be as well.
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February 26, 2010 at 2:41 am #2812879
Dynamic Disk?
by balge · about 13 years, 9 months ago
In reply to Very Annoying
hi
don’t think you should be using dynamic disks for this –http://www.petri.co.il/difference_between_basic_and_dynamic_disks_in_windows_xp_2000_2003.htm
I would try reformatting as a basic disk
cheers
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February 25, 2010 at 8:57 pm #2812908
What if the drive works on one computer
by djblight · about 13 years, 9 months ago
In reply to Depends on what happens when you plug in the USB Drive
My personal external hard drive, which is one of the maxtor one touch 4 portables, will work on my desktop running Windows 7 ultimate, but every other computer no matter what the operating system will not recognize the drive as being plugged in at all. There is power going to the drive as the light comes on and the drive spins, but no luck in recognizing the drive.
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July 26, 2007 at 2:26 am #2609238
BIOS Setup
by shkeat · about 16 years, 4 months ago
In reply to Unable to recognize External USB Drive
Very likely your bios settings got changed. Got to your bios setup page and look for USB option. reenable it back and everything will be back to normal. Don’t have to format anything at all.
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July 26, 2007 at 4:41 am #2609181
Did you try?
by paul · about 16 years, 4 months ago
In reply to Unable to recognize External USB Drive
Hi! Did you try to attach your ext hdd on other pc? If it’s works on other pc, that means your laptop encountered a low power on usb port. If it real then you don’t have choice to use your ext hdd on your laptop otherwise you can try to change another ext case
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July 26, 2007 at 6:25 am #2609135
Water under the bridge
by twinkynz · about 16 years, 4 months ago
In reply to Did you try?
Thanks everyone.
I installed the hard drive into a laptop and used a PE disk to boot.
It is reconigsed but unable to format.
So I gave up and forked out $100 for another 2.5″ drive.Problem resolved
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February 16, 2009 at 4:41 am #2769843
try this
by explorehalkidiki · about 14 years, 9 months ago
In reply to Unable to recognize External USB Drive
are you sure you connected the usb no1 and not no2
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