badblocks: No such file or directory while trying to determine device size

[T o n g <mlist4suntong@yahoo.com>]

Hi,

Any one can explain the following?

tdev=sdb5

$ badblocks -p 99 -c 90000 -wv /dev/$tdev
badblocks: No such file or directory while trying to determine device size

$ fdisk -l /dev/sdb
Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        7649    61440592    7  HPFS/NTFS
/dev/sdb2            7650       11474    30724312+  83  Linux
/dev/sdb3           11475      182401  1372971127+   5  Extended
/dev/sdb5           11475      182401  1372971127   83  Linux

$ sfdisk -V /dev/sdb
Warning: no primary partition is marked bootable (active)
This does not matter for LILO, but the DOS MBR will not boot this disk.
/dev/sdb: OK

PS, was doing 

tdev=sdb and/or tdev=sdb1, and they both went well.

$ apt-cache policy e2fsprogs
e2fsprogs:
  Installed: 1.41.3-1
  Candidate: 1.41.3-1
  Version table:
 *** 1.41.3-1 0
        500 http://cdn.debian.net lenny/main Packages
        100 /var/lib/dpkg/status

Thanks

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