cisco 3640 flash upgrade/no device available

[nivekworb]

Hello guys i have a 3640 router:

IOS Software, 3600 Software (C3640-I-M), Version 12.4(10),
System image file is "flash:c3640-i-mz.124-10.bin".


I am having problems with the pcmcia card(I have several) ,I have a 32mb CF from cisco.
This is the problem

:Router#dir slot1:
%Error opening slot1:/ (No device available)
Router#
Router#sh file systems
Flash card inserted. Reading filesystem...done.

File Systems:

Size(b) Free(b) Type Flags Prefixes
- - opaque rw archive:
- - opaque rw system:
129016 125892 nvram rw nvram:
- - opaque rw null:
- - network rw tftp:
* 16252924 4302436 flash rw flash:
- - flash rw slot0:
- - flash rw slot1:
- - opaque rw xmodem:
- - opaque rw ymodem:
- - network rw rcp:
- - network rw http:
- - network rw ftp:
- - opaque ro cns:

Router#

Router#dir slot1:
%Error opening slot1:/ (No device available)
Router#

can someone shed some light on this thanks.