No space on recovery disc D

[yoryam]

I do not have enough room to update backup on recovery disk D

I have 8.03mb free of 0.99gb on recovery disc D

I have followed the instructions of an eHow contributor on
'How to increase the size of the recovery disk in vista'
and the message shown was:

'The specified volume shadow copy storage association was not found'

Any suggestions or advice on how to find the shadow copy storage association would be appreciated

I have windows vista home premium model xps m1530 32 bit operating system with service pack 2

I have uninstalled all unnecessary programs and deleted all but 3 restore
points

yoryam.