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From: Uzumaki Naruto <narutopc@outlook.com>
To: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Subject: mountroot> while booting r255342 memstick
Date: Thu, 12 Sep 2013 00:32:12 +0000
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Hi=2C
I downloaded FreeBSD-10.0-CURRENT-amd64-20130907-r255342-memstick.img and d=
d into KINGSTON DT 101 G2 1.00 USB pendrive

boot it from Intel I5 laptop but hang
screen output as below.

Root mount waiting for: usbus0
ugen0.3: <SunplusIT INC.> at usbus0
Trying to mount root from ufs:/dev/ufs/FreeBSD_Install [ro=2Cnoatime]...
mountroot: waiting for device /dev/ufs/FreeBSD_Install ...
Mounting from ufs:/dev/ufs/FreeBSD_Install failed with error 19.

mountroot> ?

List of GEOM managed disk devices:
    diskid/DISK-TEA553QBGV3WZ4Gs1 diskid/DISK-TEA553QBGV3WZ4G ada0s1 cd0 ad=
a0

mountroot> ufs:/dev/da0s1a
Trying to mount root from ufs:/dev/da0s1a []...
mountroot: waiting for device /dev/da0s1a ...
Mounting from ufs:/dev/da0s1a failed with error 19

// i take out the usb pendrive and put it back

mountroot> ufs:/dev/da0s1a
Trying to mount root from ufs:/dev/da0s1a []...
mountroot: waiting for device /dev/da0s1a ...
ugen0.2: <Kingston> at usbus0 (disconnected)
umass0: at uhub0=2C port 1=2C addr 1 (disconnected)
ugen0.2: <Kingston> at usbus0
umass0: <Kingston DT 101 G2=2C class 0/0=2C rev 2.00/1.00=2C addr 3> on usb=
us0
umass0: SCSI over Bulk-Only=3B quirks =3D 0x0100
umass0:3:0:-1: Attached to scbus3
da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
da0: <Kingston DT 101 G2 1.00> Removable Direct Access SCSI-0 device
da0: 40.000MB/s transfers
da0: 3690MB (7557704 512 byte sectors: 255H 63S/T 470C)
da0: quirks=3D0x2<NO_6_BYTE>
(da0:umass-sim0:0:0:0): got CAM status 0x50
(da0:umass-sim0:0:0:0): fatal error=2C failed to attach to device
(da0:umass-sim0:0:0:0): lost device - 0 outstanding=2C 5 refs
(da0:umass-sim0:0:0:0): removing device entry
Mounting from ufs:/dev/da0s1a failed with error 19.

Any idea to troubleshoot this issue?
Thank you.
 		 	   		  =