I have an SSD that has Ubuntu 18.04 and Windows 10 installed - both boot fine and Windows 10 was installed after Ubuntu - this is sdb - screenshot below

enter image description here

I have a secondary 3TB HDD that i was using with Ubuntu asnd is formatted as ext4 - screenshot below enter image description here

When I try to resize this sda partition on Ubuntu, using gparted from a LiveUSB, screenshot: enter image description here

I get the error "Too many primary partitions" when I try to create the second NTFS partition in the new unallocated space, even though it would be only the second primary partition on this HDD. enter image description here

What am I doing wrong? Please advise

  • Welcome to askubuntu! Have you tried performing the operations one at a time? First shrink the partition, complete the action, then come back and add the new partition. Or did the shrinking successfully complete? – Organic Marble Aug 24 '18 at 14:23
  • Better to show partitions with sudo parted -l or sudo gdisk -l /dev/sdb rather than screen shot. Gdisk may show issue better also. Also shows more info on drive. Is drive gpt partitioned? It must be gpt partitioned. – oldfred Aug 24 '18 at 14:55

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