Com o pendrive conectado digite sem as aspas "mount" e coloque o resultado aqui (faça isto nos dois computadores e separe o resultado entre o computador que esta mais rápido e o que esta mais lento).
Digite também: lsusb
Verifique na bios se for 2.0 se o hi-speed esta habilitado.
******** Computador de copia lenta via USB **********
emilio@emilio-desktop:~$ mount
/dev/sda1 on / type ext4 (rw,errors=remount-ro,commit=0)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/emilio/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=emilio)
/dev/sdf1 on /media/Novo volume type vfat (rw,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush)
emilio@emilio-desktop:~$ lsusb
Bus 004 Device 002: ID 058f:6364 Alcor Micro Corp.
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102 flash drive
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 0566:3107 Monterey International Corp.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
emilio@emilio-desktop:~$
**********Computador de copia rápida via USB **************
emilio@emilio-laptop:~$ mount
/dev/sda1 on / type ext4 (rw,errors=remount-ro,commit=0)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/emilio/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=emilio)
/dev/sdb1 on /media/Novo volume type vfat (rw,nosuid,nodev,uhelper=udisks,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush)
emilio@emilio-laptop:~$ lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 1bcf:0007 Sunplus Innovation Technology Inc. Optical Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102 flash drive
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
emilio@emilio-laptop:~$
Na bios é 2.0, o hi-speed veio habilitado. Ai eu habilitei full-speed, pois com o Full-speed habilitado é bem mais rápido, faz a copia na metade do tempo que com o Hi-speed habilitado, mas mesmo assim é lento. Essa lentidão só é lenta quando feito via USB, quando é feita do HD para o mesmo HD a copia é super rápida.