Depends what you mean by safe.
Those are oem partitions - you may need the oem tools and recovery , or not if you have an installation disc.
You can always make another logical drive from the 10gb unallocated if you wish.
You will need third party software like this freebie to do it:
BEST FREE Partition Manager Software for Windows supports all 32-bit & 64 bit Windows No-server OS.