Hi, Please ignore my question, the USB dongle was not in place. Kevin On Sun, Mar 22, 2015 at 9:54 AM, Kevin Wilson <[email protected]> wrote: > Hi, grub gurus, > > I have a CentOS release 6.2 machine with GNU GRUB version 2.02~beta2 > I have a Kingston USB dongle plugged in into it > When I boot, I press "C" from the grub menu to start in console mode, and > I reach the grub prompt. > From the grub prompt, I run ls, and I get: > > (cbfsdisk) (proc) (ahci0) (ahci0,msdos2) (ahci0,msdos1) (usb0) (memdisk) > > I can run (ahci0,msdos1) succesfully to read the > /boot partition on the machine ( /boot is mounted on /dev/sdb1, its > type is ext4) > > However, when I run ls (usb0) (or ls (usb0)/) I get: > error: error communication with USB Mass Storage device. > On the USB disk I have an ext4 partition (/dev/sda1), and I can mount > this USB partition > succesfully on the CentOs machine. > > The "communication with USB Mass Storage device" appears in both > cases, when the USB dongle is mounter > and when it is not mounted. > Any idea what is the reason for this ? > > Regards, > Kevin
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