I have an imation 4G flash drive that is sitting in a USB2 port. I am transferring a 3.7G file from the computers sata hard drive to the usb drive.
It seems to be taking about 20 minutes This seems far too long. USB data rate 60MB/s. 3719MB/60MB/s = 62 seconds, give or take. Now I know I won't get a sustained rate anywhere near that, but the predicted time is 20 odd times over the theoretical minimum time. So where should I look for problems. Suspicions centre around: 1. USB flash drive cannot handle the data rate, tough one Nick; or 2. USB operating at USB1.1 rate only. How would I diagnose that? Its an intel based compaq motherboard, excerpts from lspci: 00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02) dmesg displays a lot of lines with the term USB in them, dunno whats relevant.
