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On Sun, 27 Nov 2011 15:08:10 -0500 |
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sean <tech.junk@×××××××××××.net> wrote: |
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|
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> I have two 500GB USB drives that my Gentoo system here will not read. |
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> Both these drives are fat formatted. |
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> |
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> The tail of DMESG, the entries actually go on for a long long time, |
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> has the following report for either of those two drives, |
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> [ 6027.085508] ehci_hcd 0000:01:0a.2: detected XactErr len 0/8 retry |
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> 29 [ 6027.085636] ehci_hcd 0000:01:0a.2: detected XactErr len 0/8 |
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> retry 30 [ 6027.085760] ehci_hcd 0000:01:0a.2: detected XactErr len |
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> 0/8 retry 31 [ 6027.085885] ehci_hcd 0000:01:0a.2: devpath 3 ep0in |
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> 3strikes [ 6027.136031] ehci_hcd 0000:01:0a.2: GetStatus port:3 |
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> status 001002 0 ACK POWER sig=se0 CSC |
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> [ 6027.136052] hub 1-0:1.0: unable to enumerate USB device on port 3 |
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> [ 6027.136062] hub 1-0:1.0: state 7 ports 5 chg 0000 evt 0008 |
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> |
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> Both these fat formatted drives are easily read on several other |
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> systems running Windows or MAC OS X. |
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> |
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> The Gentoo system will read small usb memory sticks up to 16 GB fat |
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> formatted. |
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> The Gentoo system will also read a 750 GB NTFS drive without problems. |
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> |
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> Is anyone able to point me in the direction to figure out why the fat |
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> usb drives will not be read by the Gentoo system? |
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|
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This post |
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|
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http://permalink.gmane.org/gmane.linux.usb.general/48758 |
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implies possible hardware errors (you seem to have protocol errors on |
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the USB bus). |
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|
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Before proceeding further, I'd try a few more tests to narrow down the |
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circumstances that produce the errors. |
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|
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What results do you get if you plug the drives into different USB |
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controllers/ports on the gentoo system? |
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|
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Can you test if they work with a different kernel version (higher and |
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lower than the current one in use)? |
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What kind of drives are these? Are you plugging USB3 drives into USB2 |
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ports for example? |
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If you are really lucky you might have free space on a drive you can |
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run mkfs.vfat on and see if that works. |
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The results of these simple tests stand a good chance of pointing us in |
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the right direction for the next step. |
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-- |
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Alan McKinnnon |
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alan.mckinnon@×××××.com |
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