Ubuntu – Convert FAT32 partition to NTFS without data loss

There actually is an easy way to do it: Run gdisk on the disk and then type w to save the changes (which, if you do nothing else, consist of converting from MBR to GPT, which gdisk does automatically). That said, there are a few caveats:

• If the disk is bootable, it will cease to be bootable after the conversion. Bootability can often be restored by installing a suitable boot loader. NTFS implies Windows, which would mean a conversion from BIOS-mode to EFI-mode booting. Making this change is possible, but is a bit tedious. Here is one page that describes how to do it. If the disk is strictly a data (non-boot) disk, then this issue isn't important for you.
• If the final partition on the disk ends too close to the end of the disk, it may need to be shrunk by a small amount -- just a few sectors, normally, although many tools will require rounding to 1MiB units, so you may lose 1MiB or so. GParted often ignores tiny gaps like this, so it's unclear from your screen shot if you'd need to do this.
• If the first partition begins too close to the start of the disk, its start point may need to be moved. That's obviously not the case for your disk.
• Some meta-data, like partition type codes, won't be correctly converted. This isn't an issue for your disk.

For more on this subject, see my GPT fdisk documentation on MBR-to-GPT conversions. (Note: I'm the author of gdisk, which is installed by default with recent versions of Ubuntu; so that page can be considered official documentation.)

Well, first if you "already having data in the form of files. I can't lose them" your very first step is to back them up before you do anything else.

Resizing and moving partitions does not often result in data loss, and if all else fails you can almost always revover files with photorec - http://www.cgsecurity.org/wiki/PhotoRec - it is a pain to do so.

Second you can not resize or move partitions that are in use. This is the main reason people advise you do these operations from a live usb.

So , no matter what, you can not move or resize your root partition without booting to a live USB (an exception would be adding to LVM).

So long as the partitions in question are not in use, ie unmounted, you can move and resize them :

See How do I resize partitions using command line without using a GUI on a server?

Otherwise your question is likely to be closed due to :

1. You are running Debian

2. Lack of information - You did not post your partitioning scheme, tell us what you want to move, what partitions are mounted, and what command and error message you are getting.