Jtdcftul

I installed Ubuntu 18.04.2 a few days ago. It's installed on a 250GB SSD and I also have a RAID0 that I configured through the Intel Rapid Storage BIOS with two 2TB Enterprise drives. Now for some reason the 2 drives show up as sdb and sdc but also the 4TB RAID Volume shows up and I can use it. GParted gives me 2 Errors every time I start it and under fdisk -l there are 16 loop devices. I mean it works but it seems very weird and although a RAID0 is more or less risky anyway I don't want to loose the data only because something is configured wrong.
Is there something I can do to fix this?

The two GParted Errors:

The first error message is german and roughly says "The argument is invalid, while /dev/sdb is positioned to read from"

First Error

Second Error

Output of fdisk -l

Disk /dev/loop0: 3.7 MiB, 3821568 bytes, 7464 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop1: 4 MiB, 4218880 bytes, 8240 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop2: 3.7 MiB, 3878912 bytes, 7576 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop3: 2.3 MiB, 2355200 bytes, 4600 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop4: 1008 KiB, 1032192 bytes, 2016 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop5: 89.3 MiB, 93581312 bytes, 182776 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop6: 35.3 MiB, 37027840 bytes, 72320 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop7: 202.3 MiB, 212099072 bytes, 414256 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disklabel type: gpt

Disk identifier: EDD8F944-9636-4398-9E93-9279DFA5F3B7



Device       Start       End   Sectors  Size Type

/dev/sda1     2048   1050623   1048576  512M EFI System

/dev/sda2  1050624 500117503 499066880  238G Linux filesystem





Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0x00000000



Device     Boot Start        End    Sectors Size Id Type

/dev/sdb1           1 4294967295 4294967295   2T ee GPT





Disk /dev/sdc: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/mapper/isw_fffhhebch_Volume1_RAID0: 3.7 TiB, 4000792707072 bytes, 7814048256 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 131072 bytes / 262144 bytes

Disklabel type: gpt

Disk identifier: 7059BA95-67D0-4AFC-98AA-6F192E03E2E3



Device                                    Start        End    Sectors  Size Type

/dev/mapper/isw_fffhhebch_Volume1_RAID0p1  2048 7814047743 7814045696  3.7T Linu





Disk /dev/loop8: 14.8 MiB, 15462400 bytes, 30200 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop9: 14.5 MiB, 15208448 bytes, 29704 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop10: 91 MiB, 95408128 bytes, 186344 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop11: 140.7 MiB, 147496960 bytes, 288080 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop12: 13 MiB, 13619200 bytes, 26600 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop13: 143.5 MiB, 150470656 bytes, 293888 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop14: 140.7 MiB, 147496960 bytes, 288080 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop15: 34.6 MiB, 36216832 bytes, 70736 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes





Disk /dev/loop16: 53.7 MiB, 56315904 bytes, 109992 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

The Specs of the System: MSI Z97I-AC Motherboard, Intel Pentium G3258, 16GB RAM, GTX 960