External DVD drive I/O Error?
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From: Paul on 17 Feb 2010 12:19 Pete L wrote: > On 17 Feb, 13:36, "ElJerid" <s.vanderhaeghen.nos...(a)telenet.be> wrote: >> Is the external drive self-powered ? >> If not, maybe the portable cannot deliver enough power through the USB >> connection. >> >> "Pete L" <peterlaving...(a)hotmail.com> wrote in message >> >> news:9ae8624e-aa98-4239-aab1-196e0ff0f61a(a)g28g2000yqh.googlegroups.com... >> >>> My DVD drive on my laptop (Sony VAIO running XP) seems to unable to >>> read disks - does some but many others not. So, I bought a USB >>> external DVD drive. When connected my PC recognises it ok but comes up >>> with I/O Error on drive G. I tried the drive on another PC and it >>> worked ok. Anybody any idea what is wrong with my laptop? > > There were no instructions with it. There are two connectors. One with > a square type connector - like the kind you often get on scanners and > there is also an obvious power connector. However, both cables have > USB's on their ends. Would it get power from each USB socket? Also > when connected this way my PC thinks there are two drives! All very > confusing.... There are a couple pictures here of an external DVD. On the back of the unit, there is a round (barrel) connector power input. That would be a place for a 5V power input. The second connector is a square-ish USB data connector, with four contacts. http://images17.newegg.com/is/image/newegg/27-270-001-S04?$S640W$ Now, in the kit, comes two cables. One is a USB to barrel connector cable. That connects the +5V and GND from a USB connector, and converts the format to the barrel connector type. So the power from one USB port can flow down that cable. The data pins on that USB cable are not connected. http://images17.newegg.com/is/image/newegg/27-270-001-S05?$S640W$ The second cable is a regular USB cable, with A and B connectors on it. That goes into the square connector on the back of the DVD drive, and all four contact pins are used on that one. +5V and GND are connected on that cable, as well as D+ and D- differential data pins. By having two cables connected, the theory is you could get up to 1 ampere of current total. The cables may "current hog" a bit, so it doesn't always work out to giving a full ampere, but in any case, there is a potential for more than the 500mA you can get from one cable to flow. Some other cable assemblies use the "hydra" approach. There is a square connector on one end of the cable. And on the computer end of the cable, there are two rectangular USB connectors. That kind of Y cable is constructed for the same reason and function, to try to get more current to run the unit. One of the USB connectors has +5V and GND connected, the other has all four pins connected. Just because you see two USB connectors, doesn't mean that the D+ and D- data pins are connected on both. The data pins of only one USB cable are connected. The drive will not "appear twice" in Device Manager, as it has only one USB data connection. You'll have to find some other reason for something like that to happen. If your drive is similar to the kit in the pictures above, try connecting both USB cables and see if that fixes a potential power problem. Paul
From: Sjouke Burry on 17 Feb 2010 12:38 Pete L wrote: > On 17 Feb, 16:50, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> > wrote: >> Pete L wrote: >>> On 17 Feb, 13:36, "ElJerid" <s.vanderhaeghen.nos...(a)telenet.be> wrote: >>>> Is the external drive self-powered ? >>>> If not, maybe the portable cannot deliver enough power through the USB >>>> connection. >>>> "Pete L" <peterlaving...(a)hotmail.com> wrote in message >>>> news:9ae8624e-aa98-4239-aab1-196e0ff0f61a(a)g28g2000yqh.googlegroups.com... >>>>> My DVD drive on my laptop (Sony VAIO running XP) seems to unable to >>>>> read disks - does some but many others not. So, I bought a USB >>>>> external DVD drive. When connected my PC recognises it ok but comes up >>>>> with I/O Error on drive G. I tried the drive on another PC and it >>>>> worked ok. Anybody any idea what is wrong with my laptop? >>> There were no instructions with it. There are two connectors. One with >>> a square type connector - like the kind you often get on scanners and >>> there is also an obvious power connector. However, both cables have >>> USB's on their ends. Would it get power from each USB socket? Also >>> when connected this way my PC thinks there are two drives! All very >>> confusing.... >> I suspect a drive letter clash. >> Open drive management and choose a different drive letter. > > Nope! I changed drive to X. It appears in My Computer as DVD-RAM > Drive(X:) however when I right click and try Explore' a box comes up > with - DVD-RAM Drive(X:) - the request could not be performed because > of an I/O device error. Any other ideas? Thanks No, except try each usb port, or in bios start legacy support.
From: Pete L on 17 Feb 2010 14:14 On 17 Feb, 17:38, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> wrote: > Pete L wrote: > > On 17 Feb, 16:50, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> > > wrote: > >> Pete L wrote: > >>> On 17 Feb, 13:36, "ElJerid" <s.vanderhaeghen.nos...(a)telenet.be> wrote: > >>>> Is the external drive self-powered ? > >>>> If not, maybe the portable cannot deliver enough power through the USB > >>>> connection. > >>>> "Pete L" <peterlaving...(a)hotmail.com> wrote in message > >>>>news:9ae8624e-aa98-4239-aab1-196e0ff0f61a(a)g28g2000yqh.googlegroups.com... > >>>>> My DVD drive on my laptop (Sony VAIO running XP) seems to unable to > >>>>> read disks - does some but many others not. So, I bought a USB > >>>>> external DVD drive. When connected my PC recognises it ok but comes up > >>>>> with I/O Error on drive G. I tried the drive on another PC and it > >>>>> worked ok. Anybody any idea what is wrong with my laptop? > >>> There were no instructions with it. There are two connectors. One with > >>> a square type connector - like the kind you often get on scanners and > >>> there is also an obvious power connector. However, both cables have > >>> USB's on their ends. Would it get power from each USB socket? Also > >>> when connected this way my PC thinks there are two drives! All very > >>> confusing.... > >> I suspect a drive letter clash. > >> Open drive management and choose a different drive letter. > > > Nope! I changed drive to X. It appears in My Computer as DVD-RAM > > Drive(X:) however when I right click and try Explore' a box comes up > > with - DVD-RAM Drive(X:) - the request could not be performed because > > of an I/O device error. Any other ideas? Thanks > > No, except try each usb port, or in bios start legacy support. Thanks guys. Paul - your pics are exactly what my drive looks like. I have just tried it on another laptop (Vista) and although this machine recognises the drive it doesn't want to read anything from a DVD. It looks to me that maybe the drive requires an external source of power. Looking at the socket it doesn't say what voltage is required. Would it be 5V? Should I be trying this and risking messing up my laptop?
From: Paul on 17 Feb 2010 15:11 Pete L wrote: > On 17 Feb, 17:38, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> > wrote: >> Pete L wrote: >>> On 17 Feb, 16:50, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> >>> wrote: >>>> Pete L wrote: >>>>> On 17 Feb, 13:36, "ElJerid" <s.vanderhaeghen.nos...(a)telenet.be> wrote: >>>>>> Is the external drive self-powered ? >>>>>> If not, maybe the portable cannot deliver enough power through the USB >>>>>> connection. >>>>>> "Pete L" <peterlaving...(a)hotmail.com> wrote in message >>>>>> news:9ae8624e-aa98-4239-aab1-196e0ff0f61a(a)g28g2000yqh.googlegroups.com... >>>>>>> My DVD drive on my laptop (Sony VAIO running XP) seems to unable to >>>>>>> read disks - does some but many others not. So, I bought a USB >>>>>>> external DVD drive. When connected my PC recognises it ok but comes up >>>>>>> with I/O Error on drive G. I tried the drive on another PC and it >>>>>>> worked ok. Anybody any idea what is wrong with my laptop? >>>>> There were no instructions with it. There are two connectors. One with >>>>> a square type connector - like the kind you often get on scanners and >>>>> there is also an obvious power connector. However, both cables have >>>>> USB's on their ends. Would it get power from each USB socket? Also >>>>> when connected this way my PC thinks there are two drives! All very >>>>> confusing.... >>>> I suspect a drive letter clash. >>>> Open drive management and choose a different drive letter. >>> Nope! I changed drive to X. It appears in My Computer as DVD-RAM >>> Drive(X:) however when I right click and try Explore' a box comes up >>> with - DVD-RAM Drive(X:) - the request could not be performed because >>> of an I/O device error. Any other ideas? Thanks >> No, except try each usb port, or in bios start legacy support. > > Thanks guys. Paul - your pics are exactly what my drive looks like. I > have just tried it on another laptop (Vista) and although this machine > recognises the drive it doesn't want to read anything from a DVD. It > looks to me that maybe the drive requires an external source of power. > Looking at the socket it doesn't say what voltage is required. Would > it be 5V? Should I be trying this and risking messing up my laptop? The pictures I showed you, are for a product where a USB cable is used to power the barrel connector. The USB port uses +5V, so that is likely to be the voltage on the barrel connector. I thought at one time, there was a standard of sorts for barrel connectors, where something should be printed in the plastic next to the barrel, telling you what it uses. Sometimes they just mold lettering in the plastic, making it hard to read. ******* This external DVD product, comes with its own adapter. And the housing of the drive, has inscribed on it that it uses 5V. http://www.pacificgeek.com/productimages/xl/DVR-XD08-R-3.jpg http://www.newegg.com/Product/Product.aspx?Item=N82E16827129042 In the advert here, it claims that drive uses "5V 2A max", but that isn't likely, as two USB ports can only provide a total of 1A, and it is unlikely they'd be shipping such a power hungry device and people would actually be able to run it directly with just one USB port. The reviews I've read for this unit, has people claiming to run it with just the single USB connector. The thing is, laptops can be more stingy with USB power, which is why there may be cases where one power source is not enough. http://www.techbuy.com.au/p/116218/Pioneer/DVR-XD08.asp Shopping for adapters is a PITA, as you can never be 100% sure you've got the right item. For example, I bought a label writer once, one that was battery powered, with a barrel jack for DC input. It had the voltage printed on it. I purchased an adapter, with the right sized jack, the right polarity and voltage, plugged it in, and the label writer would not work (LCD worked, but no printing). Turns out, the unit wanted "unregulated" DC, where the voltage pops up under light load, while I had provided it with a "regulated" DC adapter. So in fact, the unit wanted more voltage than was "printed on the tin". If an adapter comes with a product, it improves the odds it is the right type. Paul
From: Tinkerer on 18 Feb 2010 05:22 "Paul" <nospam(a)needed.com> wrote in message news:hlhihl$lsj$1(a)news.eternal-september.org... > Pete L wrote: >> On 17 Feb, 17:38, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> >> wrote: >>> Pete L wrote: >>>> On 17 Feb, 16:50, Sjouke Burry <burrynulnulf...(a)ppllaanneett.nnll> >>>> wrote: >>>>> Pete L wrote: >>>>>> On 17 Feb, 13:36, "ElJerid" <s.vanderhaeghen.nos...(a)telenet.be> >>>>>> wrote: >>>>>>> Is the external drive self-powered ? >>>>>>> If not, maybe the portable cannot deliver enough power through the >>>>>>> USB >>>>>>> connection. >>>>>>> "Pete L" <peterlaving...(a)hotmail.com> wrote in message >>>>>>> news:9ae8624e-aa98-4239-aab1-196e0ff0f61a(a)g28g2000yqh.googlegroups.com... >>>>>>>> My DVD drive on my laptop (Sony VAIO running XP) seems to unable to >>>>>>>> read disks - does some but many others not. So, I bought a USB >>>>>>>> external DVD drive. When connected my PC recognises it ok but comes >>>>>>>> up >>>>>>>> with I/O Error on drive G. I tried the drive on another PC and it >>>>>>>> worked ok. Anybody any idea what is wrong with my laptop? >>>>>> There were no instructions with it. There are two connectors. One >>>>>> with >>>>>> a square type connector - like the kind you often get on scanners and >>>>>> there is also an obvious power connector. However, both cables have >>>>>> USB's on their ends. Would it get power from each USB socket? Also >>>>>> when connected this way my PC thinks there are two drives! All very >>>>>> confusing.... >>>>> I suspect a drive letter clash. >>>>> Open drive management and choose a different drive letter. >>>> Nope! I changed drive to X. It appears in My Computer as DVD-RAM >>>> Drive(X:) however when I right click and try Explore' a box comes up >>>> with - DVD-RAM Drive(X:) - the request could not be performed because >>>> of an I/O device error. Any other ideas? Thanks >>> No, except try each usb port, or in bios start legacy support. >> >> Thanks guys. Paul - your pics are exactly what my drive looks like. I >> have just tried it on another laptop (Vista) and although this machine >> recognises the drive it doesn't want to read anything from a DVD. It >> looks to me that maybe the drive requires an external source of power. >> Looking at the socket it doesn't say what voltage is required. Would >> it be 5V? Should I be trying this and risking messing up my laptop? > > The pictures I showed you, are for a product where a USB cable is used > to power the barrel connector. The USB port uses +5V, so that is > likely to be the voltage on the barrel connector. I thought at one time, > there was a standard of sorts for barrel connectors, where something > should be printed in the plastic next to the barrel, telling you what > it uses. Sometimes they just mold lettering in the plastic, making it > hard to read. > > ******* > > This external DVD product, comes with its own adapter. And the housing > of the drive, has inscribed on it that it uses 5V. > > http://www.pacificgeek.com/productimages/xl/DVR-XD08-R-3.jpg > > http://www.newegg.com/Product/Product.aspx?Item=N82E16827129042 > > In the advert here, it claims that drive uses "5V 2A max", but > that isn't likely, as two USB ports can only provide a total > of 1A, and it is unlikely they'd be shipping such a power > hungry device and people would actually be able to run it > directly with just one USB port. The reviews I've read for > this unit, has people claiming to run it with just the single > USB connector. The thing is, laptops can be more stingy with > USB power, which is why there may be cases where one power source > is not enough. > > http://www.techbuy.com.au/p/116218/Pioneer/DVR-XD08.asp > > Shopping for adapters is a PITA, as you can never be 100% sure > you've got the right item. For example, I bought a label writer > once, one that was battery powered, with a barrel jack for DC > input. It had the voltage printed on it. I purchased an adapter, > with the right sized jack, the right polarity and voltage, plugged > it in, and the label writer would not work (LCD worked, but no printing). > Turns out, the unit wanted "unregulated" DC, where the voltage pops > up under light load, while I had provided it with a "regulated" DC > adapter. So in fact, the unit wanted more voltage than was > "printed on the tin". If an adapter comes with a product, it > improves the odds it is the right type. > Perhaps the answer is a powered USB hub. They can be picked up relatively inexpensively. -- Tinkerer
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