Tim,

Thanks for your response.

I had tried what you suggested but the system still reports 801.6 GB.

I have seen some mention of firmware problems but the asus.com web site seems to have firmware carefully hidden.

What are your thoughts?

George...    

fdisk -l /dev/sdb

Disk /dev/sdb: 801.6 GB, 801569726464 bytes
255 heads, 63 sectors/track, 97451 cylinders, total 1565565872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x52f115ab

   Device Boot      Start         End      Blocks   Id  System

Here's what dmesg says:

   2943 [160827.397064] scsi9 : usb-storage 2-1.4.4:1.0
   2944 [160828.398507] scsi 9:0:0:0: Direct-Access     ST3000DM 001-9YN166            PQ: 0 ANSI: 2 CCS
   2945 [160828.400114] sd 9:0:0:0: Attached scsi generic sg2 type 0
   2946 [160828.400635] sd 9:0:0:0: [sdb] 1565565872 512-byte logical blocks: (801 GB/746 GiB)
   2947 [160828.401611] sd 9:0:0:0: [sdb] Write Protect is off
   2948 [160828.401615] sd 9:0:0:0: [sdb] Mode Sense: 00 38 00 00
   2949 [160828.402650] sd 9:0:0:0: [sdb] Asking for cache data failed
   2950 [160828.402661] sd 9:0:0:0: [sdb] Assuming drive cache: write through
   2951 [160828.406626] sd 9:0:0:0: [sdb] Asking for cache data failed
   2952 [160828.406629] sd 9:0:0:0: [sdb] Assuming drive cache: write through
   2953 [160828.415219]  sdb: unknown partition table
   2954 [160828.418199] sd 9:0:0:0: [sdb] Asking for cache data failed
   2955 [160828.418202] sd 9:0:0:0: [sdb] Assuming drive cache: write through
   2956 [160828.418205] sd 9:0:0:0: [sdb] Attached SCSI disk