I initially plugged a brand new Sandisk 500GB SSD in and it showed up in Flies. I formatted it and now when I plug it in it does not show up in files. If I open Disks it is showing there. Not sure what I've done wrong?
Can anyone make a suggestion or offer a solution?
But it doesn't show the Format. How did You formatted the Drive and in which Format? ext4?
Another Point: Under 'Partitioning'' I see that the Drive is in MBR. Is Your other Disk in this, too? Is Your BIOS in UEFI or Legacy Mode?
@Ponce-De-Leon is spot on; that drive is wiped. But it is not formatted.
While you have it in disks, I recommend formatting it - then it will appear when mounted as a drive.
Make sure you put checkmarks in the boxes...
(Mount At System Startup)
(Show In User Interface)
FYI, these settings are found in Disks, Edit Drive Mount Options.
Bios is UEFI and this is what I did to format the drive
with this flash drive I overwrote the drive with zeroes however with the 500GB SSD I just followed what you see in the image ... I might further add that this USB flash drive is now doing the same thing, it also doesn't display in files. Previously before formatting both displayed with a pop up asking "View in files" now neither do this and are not in files.
I must be missing something (or clueless) as I cannot find this menu either in the 3 bar drop down menu or the 3 dot drop down menu ... see screenshots below
See the screen shot for location of "partition options". You don't have it, because you have not created any partitions. I suggest first make a GPT partition table on the disk and then make at least one partition, which you can format with an ext4 file system.
You ahve there 2 Option. When You click on the ''Partitioning'' Dropdown Menu, do You get more available Options? If yes, take the Option where You have GPT.
And try this:
I took a look at this dialog.
When you click on "Format" at the bottom of this dialog, all Disks does is create a partition table based on your Partitioning choice.
Disks does not have options to create partitions or file systems*. You need a partition editor like gparted, parted or fdisk to do that.
Unless a device has a file system it can mount, Files won't display the device in the sidebar.
*it will format a partition with a file system if the partition already exists.
@Nirozzz: See on this Picture and choose the Option ''Compatible with modern systems and hard disks > 2TB (GPT)''.
Thanks to everyone offering assistance ... problem solved
edit: Merry Christmas to everyone 
Was it Post number 10 or post number 11? or both...? That provided the solution that others can find and employ?
Posts 7-11 gave me the insight to solve the self created issue.
