External drive not showing in gpareted or kde partition manager

Hi everyone! Ok i have a brand new external 1tb usb drive. I had installed ventoy to use it to boot a pc. That went ok but now when i plug in the drive doesn't register on Lusub, kde partition manager, or gparted.

But here's the strange thing if i run LSBLK i get
Code:sda 8:0 0 931.5G 0 disk
sda1 8:1 0 300M 0 part /boot/efi
sda2 8:2 0 931.2G 0 part /also fdisk -l returns the following for /dev/sda1:

Code:Disk /dev/sda1: 300 MiB, 314572800 bytes, 614400 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000and fidsk -l /dev/sda2 yields this:

Code:Disk /dev/sda2: 931.22 GiB, 999885603328 bytes, 1952901569 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytesAlso when i try to umount it i get nothing for /dev/sda1 but /dev/sda2 displays

[CODE][umount: /: target is busy.
/CODE]

I tried unplugging the drive and rebooting my pc (Which by the way is Kubuntu 24.04) but it still says it's busy.

I read online that by adding the lines /dev/sda1 and /dev/sda2 to /etc/fstab and commenting them out would prevent them being mounted during the boot process but that doesn't seem to have worked either.

Is there anyway of getting round this.

please help!