How to make Gparted see an external hard drive?

Question

ubuntu

There is an external hard drive HDD 150 GB.
[email protected] ~/D/C/C/U/U/L/Video1> sudo fdisk -l
[sudo] password for serii: Disk /dev/sda: 465.8 GiB, 500107862016
bytes, 976773168 sectors
: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk ID: 0xfdd24b3d Device
Bootable Start End Sectors Size Id Type
/dev/sda1 * 2048 959997951 959995904 457.8G 83 Linux
/dev/sda2 959999998 976771071 16771074 8G 5 Extended
/dev/sda5 960000000 976771071 16771072 8G 82 Linux swap / Solaris
Disk /dev/sdb: 149.1 GiB, 160041885696 bytes, 312581808 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk ID: 0xeb4e7c77 Device
Boot Start End Sectors Size Id Type
/dev/sdb1 2048 312578047 312576000 149G 7 HPFS/NTFS/ exFAT
The mount command also sees this drive
/dev/sdb1 on /media/serii/ Local drive type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2)
But Gparted does not see

What is the actual problem?

Answer 1

at the top right, the device switch /dev/sda what does it show ??