partition problem

[jwepjb]

i have cloned my 160G onto a 1terabyte successfully and removed old drive for a rainy day. everything is ok, except, there is 778Gb of space i cannot access because i have the max partitions, 4, i can't extend any of the partitions either. I thought of removing 1 but i get a warning that if i delete i wont be able to use memory again because of it being an extended partition, so i dont know what to do. it seems a lot of space to not be able to use

help

simple basic healthy (eisa config) 6.83GB 100% free
ACER (C healthy (system, boot, page file,active, crash dump, primary partition 71.28GB 15% free
Data (D simple basic healthy primary 70.94GB 54% free
New volume (M healthy logical drive 4.33GB 99%free

then a partition not mention, but viewable in 'disc management' of 778GB unallocated

 

[johnb35]

Delete M partition (providing there is nothing on it) which will add it to the unallocated space and then turn around and partition the balance of the drive and format it.

 

[jwepjb]

Delete M partition (providing there is nothing on it) which will add it to the unallocated space and then turn around and partition the balance of the drive and format it.

Many Thanks i have done as suggested....problem solved