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Screen goes black
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What I’ve Tried:
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The video was too fast for me. But I believe before you resize partitions you need to resize the filesystem. I assume the previous one was on /dev/sda1? I used resize2fs to resize my ext4 filesystem. Then I used gdisk to rework the partition table. It made me a little nervous, as I had to delete the in-use partition before adding it as a new size.
What partition table type are you using on that drive? You can check in GParted with View > Device Information. I would guess it’s currently loop which supports only one partition. For any drive with multiple partitions, it’s recommended to use gpt partition table type (GUID partition table) where possible.
If your drive is not gpt:
Can you change it to gpt partition table?
Do you have backup of the data on the drive? because creating a new gpt partition table starts from scratch & erases all the existing partitions on the drive.
My suggestion is to apply the shrink operation BEFORE trying to create the second partition from the remaining available space.
I suspect gparted is not smart enough to make the calculations of future conditions (which have not been attained) while trying to apply the defined operation (size of about 2 GB starting at the end of the 3.6G disk).
I am sure that if you apply “stepwise”, it will work.
What I’ve noticed is that your partition is /dev/sdb.
This is incorrect. It should be /dev/sdb1 (the number might be different).
To go back to basics:
A physical drive is separated into partitions.
In order to do that, the drive must have a partition table.
In your case, the physical drive would be /dev/sdb with an (invisible) partition table.
The partitions would be /dev/sdb1, /dev/sdb2, etc (the numbers might differ).
You can format each partition separately.
In your case, you seem to have skipped both the partition table and the partition, and formatted /dev/sdb itself. So, instead of a partition table plus a formatted partition, you have just the drive, formatted.
That’s why you’re getting that strange message. You can’t add a partition because your entire drive is the partition!
Note: A partition table can have different formats. There are only two that are relevant here: the older MBR format, which allows a maximum of four partitions, but allows each partition to optionally be split into virtual partitions; or the newer GPT format, which allows many partitions (plus new functionality). The GPT format is generally preferred for several reasons.
So, what you need to rectify your situation is this:
If you have important data on your drive, back it up first. The following step will erase the entire drive.
In Gparted, select /dev/sdb and then choose menu options Device > Create Partition Table > select “gpt” > Apply.
Reminder: This will erase the entire drive, so ensure that you’ve chosen the correct device.
It will also leave the drive unformatted (which is what you want) and without any partitions.
Right-click /dev/sdb > new, or menu Partition > new.
Create and format your partition.
I recommend filling in both the Partition name, which applies to the partition itself, and the Label, which applies to the file system inside the partition. You can make them the same, if you wish.
The partition name is case-sensitive, and can be up to 36 characters.
The label depends on the file system. For ext4, it is case-sensitive and can be up to 16 characters. For FAT, it is case-insensitive and can be only 11 characters.
Repeat steps 3 & 4 as many times as you need to create your partitions.
Please check if similar issues have already been reported and resolved.
See the “Start here” guide: