raid

Checking that no-one is using this disk right now ...
OK

Disk /dev/hdb: 77545 cylinders, 16 heads, 63 sectors/track
Old situation:
Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/hdb1          0       -       0          0    0  Empty
/dev/hdb2          0       -       0          0    0  Empty
/dev/hdb3          0       -       0          0    0  Empty
/dev/hdb4          0       -       0          0    0  Empty
New situation:
Units = sectors of 512 bytes, counting from 0

   Device Boot    Start       End   #sectors  Id  System
/dev/hdb1   *        63  74862899   74862837  83  Linux
/dev/hdb2      74862900  78156224    3293325   5  Extended
/dev/hdb3             0         -          0   0  Empty
/dev/hdb4             0         -          0   0  Empty
/dev/hdb5      74862963  78156224    3293262  82  Linux swap / Solaris
Warning: partition 1 does not end at a cylinder boundary

sfdisk: I don't like these partitions - nothing changed.
(If you really want this, use the --force option.)