I bought two 4 TB HDDs to replace my 5 TB external hard drive (of which only 3 TB was used). I thought the best way to transfer over the data was to clone the disk using dd. Now, however, everything has gone wrong and I can no longer excess, nor remove either of the new or old drives. blkid gives a hint about the problem, but I don't know how to fix it.
Code
root@CerpacNAS:/srv# blkid
/dev/sdc1: LABEL="Backup" UUID="3c216b51-0d7b-414c-a860-a2f62898174b" TYPE="ext4" PARTUUID="455b4be9-fb7c-4ac5-ade2-634cba8d647a"
/dev/sdb1: LABEL="MediaInternal" UUID="ac71b6fb-516d-469c-bb86-3f065030bb68" TYPE="ext4"
/dev/sda1: UUID="04d61ad6-45c6-4d9e-b6e7-eab0fcea3acf" TYPE="ext4" PARTUUID="9976099b-01"
/dev/sda5: UUID="010109e8-70cc-461b-9bc9-dcc08316ef9e" TYPE="swap" PARTUUID="9976099b-05"
/dev/sdd1: LABEL="Media" UUID="e92a6b8f-0dae-40d7-9805-b5b38985f161" TYPE="ext4" PARTUUID="2c28ae74-e280-45d1-b19e-e68897b656ba"
/dev/sde1: LABEL="Media" UUID="e92a6b8f-0dae-40d7-9805-b5b38985f161" TYPE="ext4" PARTUUID="5022ebbc-697e-4a54-905f-a6ebca12f4c7"
/dev/sdf1: PARTUUID="7eae4410-b55e-4441-86ae-d57668ee9a82"
sdd is the old external drive, and sde and sdf the two new ones. Thanks for the help.