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#1
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USB Drive Issue
Windows 10 home premium 64 bit, all updates installed.
I use an external USB 3 drive for backup. I have two 3 TB drives that I use for this. Recently, my computer would no longer see the 3 TB drive. I did the usual trouble-shooting steps including switching docking stations, cables, ports but no change. I then re-installed Windows using a Windows 10 recovery disc I had created. Again, nothing changed. My computer was getting pretty long in the tooth, so I purchased a new one. Still, the 3 TB drive was not recognized. However, smaller drives, such as 1 and 2 TB, worked fine. At the same time as the drive problem began, my USB printer also disappeared and I was unable to re-install. I went to Windows help and eventually to a chat with a Microsoft technician. He totally denied any issues with Windows and kept searching for a hardware solution, so was no help. I am of the opinion that this problem was created by a Windows update and wonder if anyone else is having a similar problem and if anyone knows of a solution. |
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#2
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USB Drive Issue
Shoe wrote:
Windows 10 home premium 64 bit, all updates installed. I use an external USB 3 drive for backup. I have two 3 TB drives that I use for this. Recently, my computer would no longer see the 3 TB drive. I did the usual trouble-shooting steps including switching docking stations, cables, ports but no change. I then re-installed Windows using a Windows 10 recovery disc I had created. Again, nothing changed. My computer was getting pretty long in the tooth, so I purchased a new one. Still, the 3 TB drive was not recognized. However, smaller drives, such as 1 and 2 TB, worked fine. At the same time as the drive problem began, my USB printer also disappeared and I was unable to re-install. I went to Windows help and eventually to a chat with a Microsoft technician. He totally denied any issues with Windows and kept searching for a hardware solution, so was no help. I am of the opinion that this problem was created by a Windows update and wonder if anyone else is having a similar problem and if anyone knows of a solution. For the presence of the drive, you can use this for the physical layer. https://www.uwe-sieber.de/usbtreeview_e.html When you plug in the USB drive, then power it on using the wall adapter, you should see a new entry in USBTreeView. Like a USB Mass storage device. https://www.uwe-sieber.de/gif/usbtreeview_3.png If you get that far, then check Device Manager (right-click of start menu contains it). Look for a new storage device there. If that works, open Disk Management and verify the device is in the "Online" state. If the disk identifier is exactly the same as another disk, the portable disk will remain offline. A hard drive needs partitions, so you can see a the partition in My Computer. If the hard drive does not respond to an ID command, the USB chip will not report in to the OS and the drive will remain invisible. In cases like that, plug the SATA drive inside the external casing or dock, into a SATA port on the motherboard, using a SATA data and SATA power cable. For something like a WDC MyBook, taking the enclosure apart, to remove the hard drive, can be complicated and involve hidden screws. They don't make some of those cases all that easy to open. If the drive still doesn't show up, not even in a BIOS screen or BIOS menu, then the drive itself is likely "bricked" or permanently damaged. Paul |
#3
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USB Drive Issue
On Sun, 26 Aug 2018 11:41:18 -0400, Paul
wrote: If that works, open Disk Management and verify the device is in the "Online" state. If the disk identifier is exactly the same as another disk, the portable disk will remain offline. I have two USB drives with a WD Green 2TB in each. Either would work by itself but not both at the same time. I went into Disk Management, right clicked on offline, then clicked online in the drop down list. Now they both work. Paul |
#4
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USB Drive Issue
Lucifer wrote:
On Sun, 26 Aug 2018 11:41:18 -0400, Paul wrote: If that works, open Disk Management and verify the device is in the "Online" state. If the disk identifier is exactly the same as another disk, the portable disk will remain offline. I have two USB drives with a WD Green 2TB in each. Either would work by itself but not both at the same time. I went into Disk Management, right clicked on offline, then clicked online in the drop down list. Now they both work. Probably they both have identical disk signatures. Either the lazy manufacturer delivered all with identical ones or one drive was cloned from the other. You can check the disk signature by means of USB Drive Info: https://www.uwe-sieber.de/usbdriveinfo.html If both signatures are identicaln the you can change one by means of DISKPART: diskpart select disk N (where N is the disk number you see in UsbDriveInfo) uniqueid disk id=12345678 exit Safely remove the drive, re-attach it and take the second one online :-) Uwe |
#5
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5V power supplies (Was: USB Drive Issue)
Wolf K wrote:
On 2018-08-27 01:35, Lucifer wrote: On Sun, 26 Aug 2018 11:41:18 -0400, Paul wrote: If that works, open Disk Management and verify the device is in the "Online" state. If the disk identifier is exactly the same as another disk, the portable disk will remain offline. I have two USB drives with a WD Green 2TB in each. Either would work by itself but not both at the same time. I went into Disk Management, right clicked on offline, then clicked online in the drop down list. Now they both work. Paul Related question: The external USB hub is labelled "5vDC 5.0A", but I can't find a wall-wart with the correct (3mm) power plug. (Why do MFRs make these things and don't package them with the power supply? Bah!) Anybody know a source? Ip;[ve looked in all the usual places. TIA, There are at least 15 different barrel connectors. You might remember the "hydra" at the Radio Shack, the thing with barrel connectors on it that customers could use to test for a fit on an electronic item. Once you knew the letter, like an "N" barrel, you could go shopping for accessories. The plugs actually have amperage ratings. A manufacturer should select a size consistent with the application. These are not fashion statements, and have a technical aspect to them. Plugs can be center-positive or center-negative. The appliance has the polarity info stamped right into the plastic of the appliance (your hub). 3mm seems kinda small for 5A. Measure the barrel with your calipers, and try the Wikipedia article, then see if you can track down a rating. Maybe the reason no adapters have that plug on the end, is the plug isn't the right one for the job. https://en.wikipedia.org/wiki/Coaxial_power_connector ******* The other thing to keep in mind, is the arithmetic involved in this. You only need sufficient current, to cover the expected load. If you're fast-charging three iPads off the USB ports, maybe you really do need a 5 amp adapter. If you're running five 100mA mice off the hub, you need a 5V @ 500mA adapter. Instead of buying a 5A adapter, you can tailor the max current requirement, to the hardware situation you're in. Can you run five mice at 100mA each off the 5 amp adapter ? Sure. It means the adapter has "4.5 amps of headroom left" and could accept more loading if it occurred. There's nothing wrong with using the giant adapter. However, if you cannot locate the exact item you're looking for, add up the expected loads for the hub, and formulate a plan based on that. The USB hub chip needs some power. If the hub was USB2, the chip would need about "zero" power :-) Maybe 100mA would be enough. The higher speeds of USB3 would result in a current draw for the main chip, that was higher than that. Summary: 1) Ascertain exactly which Adaptaplug this is. Check OD and ID, for comparison to adverts. 2) If you can't find the adapter product you want, resort to a bit of creative arithmetic to figure out a "new" rating for your purchasing exercise. If worse comes to worse, you can visit Digikey, Mouser, or Newark/Element14 and see what they've got. They sell quantity 1 of some items. And their minimum purchase might be quite reasonable. (Just the shipping could kill the deal.) For example, Digikey lists 3000 adapters. And there are columns in the filter dialog for the precise barrel dimensions. https://www.digikey.ca/products/en/p...k=5v%20adapter You apply the filter operations in multiple stages. Click "5V" out, and "5A" out first. Click "Apply". Now the 3000 items drops to only 56 choices. And the barrel types field will show fewer variants in its column. (The quantity one choices are limited to the following family.) https://www.cui.com/product/resource/smi36.pdf Notice now, that all the barrels are 5.5mm OD. In fact, the two IDs (Inside Diameters) listed, are kinda standards for this stuff. Note that the Adaptaplug entry I've added to the table, is purely for its entertainment value. It has no technical significance. These are quite popular choices. 5.5mm OD 2.5mm ID Adaptaplug "N" 5.5mm OD 2.1mm ID Adaptaplug "M" The length of the barrel is yet another variable. I've not run into an issue (so far), with that variable. If you were working with the "locking ring" variant of plug, perhaps then the length would be more important (too long means it won't lock ?). The project I was working on, initially I was going to use two wall adapters, and use them to attain a non-standard voltage. But getting parts for barrels and jacks was going to be such a pain in the ass, I abandoned my plan, and build my own power supply out of junk room parts. Put a terminal block on it (with screw termination) and just joined lengths of wire for the project I had in mind. As a result of what a nuisance the barrel idea was, there were no barrels in my finished product. The Canadian store "The Source", our sorta RadioShack, no longer carries a good selection of barrel-related toys. At one time, there were enough parts there, you could make a conversion cable if it was needed. Paul |
#6
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5V power supplies (Was: USB Drive Issue)
In article , Wolf K
wrote: Related question: The external USB hub is labelled "5vDC 5.0A", but I can't find a wall-wart with the correct (3mm) power plug. (Why do MFRs make these things and don't package them with the power supply? Bah!) because it works perfectly fine without one, so by not including a power adapter, they can offer a usb hub for a lower price. there are also hubs with power adapters, for those who need it. the real question is if you wanted a usb hub with a power adapter, why did you buy one that didn't include one? Anybody know a source? Ip;[ve looked in all the usual places. apparently not, because they're incredibly easy to find. start with the manufacturer of the hub, or just do a search for 5v power adapter, which comes back with many, many hits. if you have a 5v adapter with the wrong size plug, then get an adapter cable or just cut the plug off and replace it with the correct size. or just get another usb hub that includes a power adapter, which may end up being cheaper than buying a power adapter separately as well as less hassle. |
#7
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5V power supplies (Was: USB Drive Issue)
In article , Paul
wrote: 3mm seems kinda small for 5A. 3mm is very common for usb hubs and has nothing to do with the amp rating of the power adapter. |
#8
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5V power supplies (Was: USB Drive Issue)
In article , Wolf K
wrote: the real question is if you wanted a usb hub with a power adapter, why did you buy one that didn't include one? Because none of the ones on the shelves had a power adapter. order online. likely cheaper too. |
#9
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5V power supplies (Was: USB Drive Issue)
On 8/27/2018 8:33 AM, nospam wrote:
In article , Wolf K wrote: the real question is if you wanted a usb hub with a power adapter, why did you buy one that didn't include one? Because none of the ones on the shelves had a power adapter. order online. likely cheaper too. One more thing to worry about is that some/many hubs connect the external 5V in parallel with the 5V coming from the computer USB port. Undesirable things can happen if... The external supply is higher than 5V from the computer The external supply is lower than 5V from the computer The external supply overheats and shorts, producing more voltage You make a cable and accidentally hook it up backwards You power down the computer without powering down the hub You still think you wanna buy the cheapest one you can find on ebay? |
#10
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5V power supplies (Was: USB Drive Issue)
In article , mike
wrote: the real question is if you wanted a usb hub with a power adapter, why did you buy one that didn't include one? Because none of the ones on the shelves had a power adapter. order online. likely cheaper too. One more thing to worry about is that some/many hubs connect the external 5V in parallel with the 5V coming from the computer USB port. only ****ty non-compliant ones. Undesirable things can happen if... The external supply is higher than 5V from the computer The external supply is lower than 5V from the computer The external supply overheats and shorts, producing more voltage You make a cable and accidentally hook it up backwards You power down the computer without powering down the hub You still think you wanna buy the cheapest one you can find on ebay? i didn't say buy the cheapest thing on ebay. i didn't even mention ebay. the point is that the selection of products online is much better than what any single store can carry, who probably won't bother carrying the better hubs because they cost more and won't sell as well. and there are plenty of quality usb hubs (and other stuff) on ebay, often for very good prices. |
#11
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5V power supplies (Was: USB Drive Issue)
Wolf K wrote:
On 2018-08-27 14:54, nospam wrote: In article , mike wrote: [snip argy-bargy] Thanks, everyone, I see it's better to look for a hub with a power supply than for a hub and then a power supply. Best, Here's one that comes with a 4 amp adapter. It has USB3 and USB2 data ports, and the upstream is USB3. https://www.newegg.com/Product/Produ...82E16817707281 ******* This is just a charging hub, rather than carrying USB data. I double checked, and it cheats like the next two items. The adapter is "12V/3A US Power Adapter" so DC 12V to 5V conversion is inside the hub. https://www.newegg.com/Product/Produ...9SIA1DS14S2073 This one apparently uses a (not shown in picture!) 12V @ 3A external adapter, to power a 7 port USB3 hub. That means you could run 7 ports at 5V @ 900mA each (7 * 4.5W = 31.5W). https://www.newegg.com/Product/Produ...9SIA24G6HX0195 And here's another 7 port one with no USB-C on it. Same deal, with the 12V @ 3A external adapter, and power conversion inside the hub to make 5V. https://www.amazon.com/Plugable-Port.../dp/B075NMVGP7 If I switch down to a 4 port, I get a 5V @ 2 amp adapter. https://www.amazon.com/Vantec-Port-S.../dp/B004IYJWVW If there was a selector on these sites for "5 amp" I might have better luck dialing one in. Paul |
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