Can't read or write on new partition i created from /root partition and now i can't do anything on that partition.

when i opens its properties it show you are not owner so you can not change these permissions.

i tried to change the permission of group to admin using

 sudo chgrp adm /media/sandip/73b40bee-df86-4201-b60f-6e4b6d60ee0e

 chgrp: cannot access '/media/sandip/73b40bee-df86-4201-b60f-6e4b6d60ee0e' : No such file or directory 

i first installed ubuntu recommendly but that created three partition and /root has many of the disk space than i partition /root using bootable cd, and then i created ext4 partition and now i can't copy or paste in the new partition or i can't do anything in it.

sandip@sandip-Lenovo-G580:~$ sudo lsblk -o name,mountpoint,label,size,fstype;sudo parted -l

sda                                465.8G 
├─sda1 /boot/efi                     512M vfat
├─sda2 /                            80.4G ext4
├─sda3 [SWAP]                        1.9G swap
└─sda4 /media/sandip/Mishra Mishra   383G ext4
sr0                                 1024M 
Model: ATA ST500LT012-9WS14 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  538MB   537MB   fat32                 boot
 2      538MB   86.9GB  86.4GB  ext4
 4      86.9GB  498GB   411GB   ext4
 3      498GB   500GB   2006MB  linux-swap(v1)

kindly guide.

  • Will you edit your question and add this information to it: (1) How did you create the partition? (2) Run this command and add the output to your question: sudo lsblk -o name,mountpoint,label,size,fstype;sudo parted -l. – L. D. James Feb 11 '17 at 12:56
  • i did can you please guide me. – S.Mishra Feb 11 '17 at 13:36
  • The image you linked doesn't have the full output of the commandline provided. It appears you missed the semi-colon (;) in the command. The command is: sudo lsblk -o name,mountpoint,label,size,fstype;sudo parted -l. Will you try it again. This time use the copy and paste command so that you can put the text in to your message. It's easier to process over looking at pictures. We also need to know how you created the partition. That is #1 of the two questions in my first comment. – L. D. James Feb 11 '17 at 13:43
  • Q)"We also need to know how you created the partition. That is #1 of the two questions in my first comment" – S.Mishra Feb 11 '17 at 13:53
  • i did it using bootable pendrive. added the image as you said – S.Mishra Feb 11 '17 at 13:53

It's most likely that root has claimed ownership of the drive. Run this: Code:

sudo chown -R $USER:$USER <Mount Point>

Where mountpoint is the directory where the drive is mounted. That'll make you the owner of the drive.

If you just want to add write permissions you could run: Code:

sudo chmod -R +w <mount point>

One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man. -Elbert Hubbard

  • @S.Mishra your welcome. – Alan Jameson Feb 11 '17 at 14:25

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