Why is there a 11G partition called /dev/xvdc3 in sys-usb?

User Support General
1

Hello.

Qubes 4.2.4 .

I don’t remember any installation for 11Gigs Linux partition within my laptop that should be available to my sys-usb . I’ve checked - no usb sticks connected to my ports. I run fdisk -l as root in my sys-usb & I have it.
Is it something usual I should be aware of & it’s normal that I can’t mount it?
Or may be this is something that didn’t disconnect properly from previous attachments to sys-usb?

root@sys-usb:/home/user# fdisk -l 
Disk /dev/xvda: 20 GiB, 21474836480 bytes, 41943040 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: gpt
Disk identifier: F4796A2A-E377-45BD-B539-D6D49E569055

Device      Start      End  Sectors  Size Type
/dev/xvda1   2048   411647   409600  200M EFI System
/dev/xvda2 411648   415743     4096    2M BIOS boot
/dev/xvda3 415744 41940991 41525248 19.8G Linux filesystem


Disk /dev/xvdb: 2 GiB, 2147483648 bytes, 4194304 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/xvdc: 12 GiB, 12884901888 bytes, 25165824 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: 0xc0152bf4

Device     Boot   Start      End  Sectors Size Id Type
/dev/xvdc1         2048  2099199  2097152   1G 82 Linux swap / Solaris
/dev/xvdc3      2099200 25165823 23066624  11G 83 Linux


Disk /dev/xvdd: 683.35 MiB, 716541952 bytes, 1399496 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
root@sys-usb:/home/user# mount |grep xvdc
root@sys-usb:/home/user# mkdir /mnt/tmp;mount /dev/xvdc3 /mnt/tmp
mount: /mnt/tmp: wrong fs type, bad option, bad superblock on /dev/xvdc3, missing codepage or helper program, or other error.
      dmesg(1) may have more information after failed mount system call.
root@sys-usb:/home/user#
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2

it’s the default disks of the qube for it to work.

3 Likes
3

Your question isn’t “lame” (except the title :slight_smile:).

See: Template implementation | Qubes OS

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4

Thank you both for answer & especially for link to documentation (I mark since then your reply as solution) - the 1st page of Template implementation contained exact note that these partitions will be regenerated on each start, thus I guess it’s okay to have it non-mountable w/o additional efforts.

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