I ran hwinfo and got some information which is at the bottom of this email. Is the problem something to do with the partition (#42?).
all the best --Colin 41: SCSI 00.0: 10600 Disk [Created at block.190] Unique ID: PYMB.55V0VYyfGp9 Parent ID: 5YuN.GgZpSc+hxAA SysFS ID: /block/sda SysFS BusID: 0:0:0:0 SysFS Device Link: /devices/pci0000:00/0000:00:1d.7/usb4/4-1/4-1:1.0/host0/0:0:0:0 Hardware Class: disk Model: "USB Flash Memory" Device: "USB Flash Memory" Revision: "1.00" Driver: "usb-storage", "sd" Device File: /dev/sda Device Number: block 8:0-8:15 Geometry (Logical): CHS 962/32/16 Size: 492544 sectors a 512 bytes Speed: 1.5 Mbps Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #20 (USB Controller) 42: None 00.0: 11300 Partition [Created at block.352] Unique ID: 1tKY.SE1wIdpsiiC Parent ID: PYMB.55V0VYyfGp9 SysFS ID: /block/sda/sda1 Hardware Class: partition Model: "Partition" Device File: /dev/sda1 Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #41 (Disk)