I just git a notebook from my uncle. The notebook already has Windows 8 x64bit installed but I want to dual boot with Parrot OS. My hard disk is 27GB and has about 13GB of free space in a partition.
Is that enough free space enough to dual boot Parrot OS??
Generally speaking, yes. Depending on which packages you want to use and/or how much free space you'll need for your own files, 8 GB should be plenty.
That being said, before you go on playing with partitions, I would strongly recommend you try it out with a virtual machine. Install VirtualBox, create a VM add test it. It might fit the bill for your needs.
Moreover you can use a persistent USB stick, so there's no real need to do a permanent install.
If you want it installed in your computer and to run it as it should/correctly you'll need 16GB of free space (In a VM as well as not dual-boot or directly in your HD).
I was having same issue. I went and (on mackbook high Sierra-1 TB HDD) allocated drive space and then deleted all tries of install and reinstalled this time setting the VB allocated to red line then near full size of that partition which for me was just over 250GiB. Parrot fired up and is almost done setting up now. Woooo hoooo!!!!
In edit: I forgot to mention to delete old machines just use ctrl+click for options. I didn't know how to delete old machines. So there I aired all my dirty laundry so someone else can get a few more zzz's than I did. Cheers!
