On Friday 06 July 2007, Mikkel L. Ellertson wrote: >Gene Heskett wrote: >> Greetings; >> >> I have a 40GB Maxtor III in one of those usb enclosures with a dual usb >> pigtail cable. Plugged into my F7 HP dv5120us lappy, it lights up powers >> up and works albeit I think considerably slower than a usb2.0 interface >> should. This is a usb bus powered device and did not come with a power >> supply although there is a socket for one on the rear of the shirt pocket >> sized enclosure. >> >> Plugged into this FC6 box, a Biostar m7vib with 1 update from the original >> bios, this box will not post until its unplugged, at which point it posts >> normally. >> >> Plugged in later, the drive is recognized according to the logs, but is >> then reset quite a few times and finally offlined, and while its power led >> lights at normal brightness, it never spins up so is unusable. >> >> The F7 lappy uses libata. How do I switch this FC6 install to libata >> usage, and how would I go about switching the kernel build to make it >> since my kernel.org kernels are not even making it? >> >> I do note that libata.ko does exist in the /lib/modules path for the 3 >> fedora kernels installed, but booting to one of those kernels does not >> enable the use of this device. I'm thinking its a bios problem. Can >> anyone confirm? >> >> Thanks > >Because the system will not POST, as well as way it is acting when >you plug it into the FC6 box, I think your problem is that the USB >connection on the FC6 box is not providing enough power to run the >drive. You can try hooking it up to a powered USB HUB and see if >that helps. You can also try plugging in both pigtails, so that you >are drawing power from 2 USB sockets, but that may not help if they >are off the same hub, because you may be hitting the total hub power >limit. The thing to keep in mind is that not all hubs have the same >amount of power available, and bus powered drives can draw more >power then the hub has available. You can look at the drive's >reported power requirements by looking at /proc/bus/usb/devices or >running "lsusb -v" if you have it installed. I am not sure how to >get the hub's power ratings under Linux. > >Mikkel Thanks to all who have replied. I did try using both cables, but due to the physical layout, both were plugged into the same hub, and failed. Find a psu I guess. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Indifference will certainly be the downfall of mankind, but who cares?