[G Tablet Q&A, Help & Troubleshooting] peppens1:
ok.

with ADB and recovery:

~ # mount

rootfs on / type rootfs (rw)

tmpfs on /dev type tmpfs (rw,relatime,mode=755)

devpts on /dev/pts type devpts (rw,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,relatime)

/dev/block/mtdblock4 on /cache type yaffs2 (rw,nodev,noatime,nodiratime)

/dev/block/mtdblock3 on /system type yaffs2 (rw,nodev,noatime,nodiratime)

~ #

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~ # ls -l /sys/devices/platform/usb_mass_storage/lun?

-rw-r--r-- 1 root root 4096 Sep 30 11:45 file

drwxr-xr-x 2 root root 0 Sep 30 11:35 power

-rw-r--r-- 1 root root 4096 Sep 30 11:35 uevent

~ #

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~ # cat /sys/devices/platform/usb_mass_storage/lun?

cat: read error: Is a directory

~ #

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EDIT

from honeycomb and adb.

# mount

rootfs on / type rootfs (ro,relatime)

tmpfs on /dev type tmpfs (rw,relatime,mode=755)

devpts on /dev/pts type devpts (rw,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,relatime)

none on /acct type cgroup (rw,relatime,cpuacct)

tmpfs on /mnt/asec type tmpfs (rw,relatime,mode=755,gid=1000)

none on /dev/cpuctl type cgroup (rw,relatime,cpu)

/dev/block/mtdblock3 on /system type yaffs2 (rw,relatime)

/dev/block/mtdblock7 on /logodata type yaffs2 (rw,nosuid,nodev,relatime)

/dev/block/mmcblk3p2 on /data type ext3 (rw,nosuid,nodev,noatime,nodiratime,errors=continue,nobh,data=writeback)

/dev/block/mtdblock0 on /misc type yaffs2 (rw,nosuid,nodev,relatime)

/dev/loop0 on /mnt/asec/extdata type ext2 (rw,nosuid,nodev,noatime,nodiratime,errors=continue)

/dev/block/mmcblk3p2 on /cache type ext3 (rw,nosuid,nodev,noatime,nodiratime,errors=continue,nobh,data=writeback)

/dev/block/vold/179:25 on /mnt/sdcard type vfat (rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/vold/179:25 on /mnt/secure/asec type vfat (rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

tmpfs on /mnt/sdcard/.android_secure type tmpfs (ro,relatime,size=0k,mode=000)

/dev/block/dm-0 on /mnt/asec/com.silvertree.cordy-2 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/dm-1 on /mnt/asec/com.angrymobgames.guerrillabobthd-1 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/dm-2 on /mnt/asec/org.inodes.gus.scummvm-1 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/dm-3 on /mnt/asec/com.vectorunit.blue-1 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/dm-4 on /mnt/asec/com.madfingergames.SamuraiII-1 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

/dev/block/dm-5 on /mnt/asec/com.jappit.android.guidatvfree-1 type vfat (ro,dirsync,nosuid,nodev,relatime,uid=1000,fmask=0222,dmask=0222,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)

#

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ls: /sys/devices/platform/usb_mass_storage/lun?: No such file or directory

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cat: /sys/devices/platform/usb_mass_storage/lun?: No such file or directory

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