Topic: gparted does not see existing partitions

My Win 7 disk mgr sees
1 dev/sda           
1 dev/sda  1     ntfs.         104 MB.             23MB. win 7
1 dev/sda 2.     ntfs      504832MB.      497277MB
1 dev/sda 5.     ext4.    495264MB.       16923 MB

gparted pops up a small window that says, “invalid partition table on /dev/sda - - wrong signature 0”.
a larger window eventually finds no partitions and almost 1 TB. available.

The ext4 had linux on it. I erased it because I could not shrink the partition. I want to shrink that so I can expand the one listed above. Thought Gparted was supposed to do that.

novice here.


Re: gparted does not see existing partitions

Please provide the output from the following commands:

sudo parted /dev/sda unit s print
sudo fdisk -l /dev/sda
sudo lsblk -o name,maj:min,rm,size,ro,type,fstype,label,mountpoint /dev/sda
sudo blkid | grep sda | sort
sudo blkid /dev/sda