Tuesday, January 27, 2015

ubuntu - Can linux boot from a disk that has no partition table?

I have a linux system on a disk that seems to have no partition table.



gparted shows Partition table: none



df shows / mounted from /dev/sdb1




Update: When I boot from another disk, then I see that /dev/sdb has a gpt partition table, and I can see the free space. So the question is why does gparted on the new system not see the partition table?



How is it possible to have a filesystem on a disk that has no partition table?



I installed Ubuntu 18.04 on this disk, after deleting all partitions with gparted. In the Ubuntu installer, I selected the empty disk (330 GB) and created a 30 GB root partition. The newly installed system runs happily, but I cannot create more partitions on that disk. I'm perplexed. How can I access the free space on the disk? Should I repartition the disk myself and run the installer again? Is my disk defective?

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