grub2 - resizing partitions

I have the following configuration:

• sda1 1 GB maybe fat32 (windows recovery partition)


• sda2 40 GB ntfs(windows drive c) with boot flag


• sda3 around 100GB ntfs(storage partition)


• sda4 extended partition:
  
  
  
  • sda5 10 GB ext4 partition
  
  
  • sda6 1 GB linux swap
  
  

I want to make this changes:

• sda2 30 GB resize(decrease size with 10 GB)


• sda3 around 100GB(move and maybe decrease size with 4-5 GB)


• sda4 around 20-22 GB (move and increase size with 10-15GB)


• sda5 around 20 GB (move and increase size with 10-12 GB)


• sda6 2 GB (move and increase size with 1 GB)

Is it safe to do this operations?

Will i lose grub?

I will do the changes with gparted on puppy linux live usb.

Is it safe to do this operations? - no, it is NOT safe, just as any operation with partitions. You're advised to make a backup of all your important data before doing any modifications. That said, it usually works well.

Will i lose grub? - you may lose it, but it's easy to re-install it using the Boot Repair tool. You can do this straight from the Ubuntu Live CD (or possibly from puppy linux, I'm not sure, I would just use Ubuntu LiveCD)