You cannot increase the space in the current ramdisk. you can a ramdisk 
that is bigger in size and then load it.
here is how you do it

mkdir /mnt/old-ramdisk
mkdir /mnt/new-ramdisk
gunzip old-ramdisk.gz
dd if=/dev/zero of=new-ramdisk bs=<size-of-new-ramdisk> count=1
mkfs.<fs-u-need> new-ramdisk
mount -o loop old-ramdisk /mnt/old-ramdisk
mount -o loop new-ramdisk /mnt/new-ramdisk
[now you can run mc or some explorer and copy the contents of 
old-ramdisk + your files into new ramdisk]
umount /mnt/old-ramdisk
umount /mnt/new-ramdisk
gzip -9 new-ramdisk

now you have a brand new ramdisk :)
hope this helps

-regards
-kishan

Supriyo Chatterjea wrote:

> Hi,
> 
> I'm currently using the ramdisk from
> ftp://ftp.netwinder.org/users/n/nico/ramdisk_img.gz to
> load demo programs to the Assabet board.
> 
> However, I notice that it gets filled up as soon as I
> place a few demo files in it.
> 
> Is there any way of increasing the size of the
> ramdisk? 
> 
> Or do I need to use something else instead of the
> ramdisk?
> 
> Thanks,
> Supriyo
> 
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