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

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On Wednesday, 26. September 2012. 22.08.50 George R Goffe wrote: > 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? [snip] > fdisk -l /dev/sdb The fdisk utility is known to not work properly on devices larger than 3TB. You want to use parted (or some gui version like gparted) to create a new partition table.