All is well except it will not read a Sandisk Pixar 32GB micro secure digital card (sdhc) when inserted in the microSD slot.
With the sdhc card inserted into an adapter, which was then inserted into a USB port, lsblk yields :
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NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 29.1G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
└─sda2 8:2 0 28.6G 0 part /
sdb 8:16 1 29.7G 0 disk /media/paul/sandisk SD
With the card was inserted in the microSD slot instead, lsblk yields :
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NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 29.1G 0 disk
├─sda1 8:1 0 512M 0 part /boot/efi
└─sda2 8:2 0 28.6G 0 part /
Trying PREFERENCES > DISKS shows both the hard drive (such as it is) and the SD card reader. If I select the SD, the VOLUMES box shows “32 GB unknown”. Miraculously, it knows that it is a 32GB card.
So it appears to be a problem with the micro SD drive or port, not the disk itself. Is a driver required?