# Analysis of the available data in the questionThe `fdisk-l` output 2GB Install-media-disk arranged to be bootable, compare to /dev/sdh above. loop0p1 and ...p2 are two partitions here.
This is the first level of content in ubuntu-18.10-desktop-amd64.iso
Disk /dev/loop0: 1.9 GiB, 1999503360 bytes, 3905280 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: 0x133f436e
Device Boot Start End Sectors Size Id Type
/dev/loop0p1 * 0 3905279 3905280 1.9G 0 Empty
/dev/loop0p2 3828884 3833811 4928 2.4M ef EFI (FAT-12/16/32)
The collection of loop devices, mounted snap packages, except #6:
Disk /dev/loop1: 1.8 GiB, 1905549312 bytes, 3721776 sectors
Disk /dev/loop2: 87.9 MiB, 92123136 bytes, 179928 sectors
Disk /dev/loop3: 140.9 MiB, 147722240 bytes, 288520 sectors
Disk /dev/loop4: 2.3 MiB, 2355200 bytes, 4600 sectors
Disk /dev/loop5: 13 MiB, 13619200 bytes, 26600 sectors
Disk /dev/loop6: 14.5 MiB, 15208448 bytes, 29704 sectors
Disk /dev/loop7: 3.7 MiB, 3878912 bytes, 7576 sectors
Disk /dev/loop8: 42.1 MiB, 44183552 bytes, 86296 sectors
Check the output oflsblk
in your Question for the details.The first is a "CD-ROM" mounted as/rofs(Read Only File System)The others are snap packages included in there. The SSD:
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 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
... a single partition This appears very similar in size to loop6, based on the name given by
lsblk
(/snap/gnome-logs/45) it probably appears as a writable device for the Ubuntu installation software, similar to a RAM-resident disk.
Disk /dev/sdb: 14.6 GiB, 15665725440 bytes, 30597120 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: 0xf7cd59a9
Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 8192 30597119 30588928 14.6G c W95 FAT32 (LBA)