"persistent" USB drive

    I'm running LibreElec on a RPi2. A USB drive that I use to transfer files (the old fashioned way) is seen by LibreElec as a previous incarnation (Linux Mint distro) of what it is now. I understand that this has to do with the drive being mounted and that it has to be unmounted. I have successfully connected to the RPi2 using ssh but get the following when I try to unmount the USB drive:

    LibreELEC:/ # unmount /dev/sda

    -sh: unmount: not found

    Any ideas or pointers? TIA.

    Edited once, last by Jimbob (September 8, 2020 at 5:30 AM).

    Quote from Jimbob

    I'm running LibreElec on a RPi2. A USB drive that I use to transfer files (the old fashioned way) is seen by LibreElec as a previous incarnation (Linux Mint distro) of what it is now. I understand that this has to do with the drive being mounted and that it has to be unmounted. I have successfully connected to the RPi2 using ssh but get the following when I try to unmount the USB drive:

    LibreELEC:/ # unmount /dev/sda

    -sh: unmount: not found

    Any ideas or pointers? TIA.

    umount

    check mount table before you try to umount devices. You might be disconnecting something that is in use. /dev/sda is only first detected scsi/sata disk. It does not have to be your usb drive.

    Edited 2 times, last by tokul (September 8, 2020 at 6:33 AM).

    Quote from tokul

    umount

    check mount table before you try to umount devices. You might be disconnecting something that is in use. /dev/sda is only first detected scsi/sata disk. It does not have to be your usb drive.

    That's subtle! Thanks.

    Checked already. /dev/sda IS the USB drive that I can't unmount.

    Anyway, umount worked where unmount didn't but it didn't resolve my problem. When I plugged the USB stick in again, the RPi "saw" it as the old drive/label/directory structure. Is there some file that needs to be edited or deleted?

    Edited 2 times, last by Jimbob: update and typo. (September 8, 2020 at 4:21 PM).

    Solved. Used the Disks utility on Linux Mint to remove all partitions from drive and then did a full format on it. When I opened the drive, there appeared to be a single partition with the new label. When I deleted that, there seemed to be another partition with the old name. Disks did not give me the option to delete that so I formatted it.