So I have Windows 10 and Manjaro installed, but since the first install I never used Windows, so I was wondering if I could remove the Windows partition without re-installing Manjaro.
Also I was wondering if I could format one of the drives that Windows uses, from NTFS to ext4, so I could have a better use of it.
Here’s some better information about the drives and partitions
Model: ATA SanDisk SSD PLUS (scsi)
Disk /dev/sda: 120GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 120GB 120GB primary ext4
Model: ATA ST1000DM003-1ER1 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 525MB 524MB primary ntfs boot
2 525MB 107GB 106GB primary ntfs
3 107GB 107GB 528MB primary ntfs msftres
4 107GB 1000GB 893GB primary ntfs
If you need any more information I will provide.
Thank you all for the help!
Solution:
On Gparted unmount and delete the partition, create a new one with the free space and follow the commands bellow.
Is this an mbr system or uefi, if the latter you have no boot/efi partition for linux so it may be shared with windows?
It’s an MBR system I believe, is there a way I can check?
Hello @Intergalactic_Apple 
Please add this output:
LANG=C sudo parted -l
since not everyone can read your language 
On /dev/sda you installed Linux on a ms-dos partition table with MBR and it seems in /dev/sdb it is the same way with windows.
If you installed grub on the MBR of /dev/sda, then you can fully wipe /dev/sdb if you need to without problems. But i guess it is the case here.
Oh yeah sorry about the language thing 
Here’s the output:
Model: ATA SanDisk SSD PLUS (scsi)
Disk /dev/sda: 120GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 120GB 120GB primary ext4
Model: ATA ST1000DM003-1ER1 (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 525MB 524MB primary ntfs boot
2 525MB 107GB 106GB primary ntfs
3 107GB 107GB 528MB primary ntfs msftres
4 107GB 1000GB 893GB primary ntfs
Thanks… ok now it is clear. You can wipe /dev/sdb without problems, but to ensure you really installed the MBR on /dev/sda do this:
sudo grub-install --force --target=i386-pc --recheck --boot-directory=/boot /dev/sda
and
sudo update-grub
Then delete windows and reboot to check if booting is working.
So I can delete /dev/sdb but there is a drive there, the one with 893GB or sdb4, that has some important files in it, and a I have no means of backup right now, can I just delete the other parts of the partition? Or do I have to delete it fully?
No, you can skip /dev/sdb4, and delete only the other partitions. That makes no difference. Then create a new partition with ext4 at the beginning and move the files from /dev/sdb4 to the new one.
Also, after mounting the new ext4 partition, set the permissions:
sudo chown -R $USER:$USER /path/to/partition/mountpoint
and if everyone should able to read and write there, do this:
sudo chmod -R 777 /path/to/partition/mountpoint
Ok, how do I go about deleting partitions? On Gparted it doesn’t let me delete them, do I have to unmount first?
I know this is a noob question, but I am new to this partition thing
Yes, you can’t act on hardware level, if the partition is connected. Unmount it first 
No problem, everyone did their first steps before they were running 
Ok just unmounted sdb1 and sdb2, now I just delete them?
Yes, unmount it and mark it to delete. Then “apply all operations” OR CTRL+RETURN
Ok do I have to unmount sdb3 and sdb4 too? Or i just leave them there?
Only the ones which need to be deleted…
Ok just deleted them, now what do I have to do? What do I put on free space before and after?
Just add a new partition, type a name, set how much space you want to allocate, choose the filesystem ext4 and create. Then “apply all operations”. Now there should be a new partition at your file manager. There you can mount it, copy the path and set the permissions as described above.
Ok done the path is this one: /run/media/fernando/Disco de Coisas/
So the permissions would be:
sudo chown -R $fernando:$fernando /run/media/fernando/Disco de Coisas/
And
sudo chmod -R 777 /run/media/fernando/Disco de Coisas/
Is that correct?
Almost… because of the lmitation of the terminal spaces have to be escaped and $USER is a variable fr the current user. It should be like that:
sudo chown -R $USER:$USER /run/media/fernando/Disco\ de\ Coisas/
OR
sudo chown -R fernando:fernando /run/media/fernando/Disco\ de\ Coisas/
AND
sudo chmod -R 777 /run/media/fernando/Disco\ de\ Coisas/
test the variable yourself:
echo $USER
Ok, done both commands did not return any output, however after typing there was a folder created on the partition named “lost+found”, I guess it worked then?
Yeah if you can create folders there, then it is definitely done. Now you can copy files there…