USB Drive Mount
On Sun, Nov 27, 2011 at 12:52 PM, Alan McKinnon <email@example.com> wrote:
> On Sun, 27 Nov 2011 15:08:10 -0500
> sean <firstname.lastname@example.org> wrote:
>> I have two 500GB USB drives that my Gentoo system here will not read.
>> Both these drives are fat formatted.
>> The tail of DMESG, the entries actually go on for a long long time,
>> has the following report for either of those two drives,
>> [ 6027.085508] ehci_hcd 0000:01:0a.2: detected XactErr len 0/8 retry
>> 29 [ 6027.085636] ehci_hcd 0000:01:0a.2: detected XactErr len 0/8
>> retry 30 [ 6027.085760] ehci_hcd 0000:01:0a.2: detected XactErr len
>> 0/8 retry 31 [ 6027.085885] ehci_hcd 0000:01:0a.2: devpath 3 ep0in
>> 3strikes [ 6027.136031] ehci_hcd 0000:01:0a.2: GetStatus port:3
>> status 001002 0 ACK POWER sig=se0 CSC
>> [ 6027.136052] hub 1-0:1.0: unable to enumerate USB device on port 3
>> [ 6027.136062] hub 1-0:1.0: state 7 ports 5 chg 0000 evt 0008
>> Both these fat formatted drives are easily read on several other
>> systems running Windows or MAC OS X.
>> The Gentoo system will read small usb memory sticks up to 16 GB fat
>> The Gentoo system will also read a 750 GB NTFS drive without problems.
>> Is anyone able to point me in the direction to figure out why the fat
>> usb drives will not be read by the Gentoo system?
> This post
> implies possible hardware errors (you seem to have protocol errors on
> the USB bus).
> Before proceeding further, I'd try a few more tests to narrow down the
> circumstances that produce the errors.
> What results do you get if you plug the drives into different USB
> controllers/ports on the gentoo system?
> Can you test if they work with a different kernel version (higher and
> lower than the current one in use)?
> What kind of drives are these? Are you plugging USB3 drives into USB2
> ports for example?
> If you are really lucky you might have free space on a drive you can
> run mkfs.vfat on and see if that works.
> The results of these simple tests stand a good chance of pointing us in
> the right direction for the next step.
> Alan McKinnnon
I have something like 10 USB drives here at home. 9 of those drives
works perfectly in 5 machines in the house. 1 drive works when
attached to 4 of the machines but produces a similar error when
attached to my most expensive i7-980x machine.
I've never determined what causes it and have sort of decided it's
just some weird incompatibility...