Storage engine throws error 5 while restoring

[Britto I]

Here is my Environment:
RHEL 5.2 32 Bit
mysql 5.1.45
DB datapath = NFS mounted dir

When I try to restore the DB to the newly setup database it throws up an error

"Got error 5 from storage engine"

I use MyISAM as my storage engine.

and here is what my variables:

key_buffer_size = 256M
max_allowed_packet = 1M
table_open_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M


Any clues ?

Thanks & regards,
Britto