Booting from USB device leads to mounting error

[joda01]

Version (k3OS / kernel)
v0.11.0-m2
5.4.0-37

Architecture
amd64

Describe the bug
When trying to install K3OS from USB stick an error: already mounted or moint poit busy error occurs

To Reproduce

• Flash the ISO to USB stick.
• Boot from USB stick to live system.
• Start installer with sudo k3os install

Expected behavior

• Installation should start

Actual behavior

• Installation interrupted with error already mounted or moint poit busy error

Additional context

• No problem when booting from CDROM
• Also see closed case Unable to image bare metal from USB drives #358

[joda01]

When generating a bootable USB device from the generated iso, 4 partitions are generated. But the device represent itself as just single partition device. For mounting the mount point /dev/sdb must be used not as expected /dev/sdb3. Mounting sdb3 leads to an error already mounted or moint poit busy error occurs.

In the install.sh script the function get_iso() is looking for the partition named K3OS. Such a partition is found at /dev/sdb3. Now the install script tries to mount sdb3 but it has to mount sdb instead because of the special structure of the partition table of the USB device.

I suggest a workaround in the install.sh script to remove the number at the end of sdx devices before mounting.

See the quick and dirty workaround on my fork: https://github.com/joda01/k3os/blob/%231_boot_error_from_usb/install.sh line 218 to 222.

[Kampe]

We're seeing this same issue attempting to install via bootable USB with RC1

[scalpel4k]

same here. the patch works like a charm. thx

[dweomer]

#528 does not work on my NUC hardware. I get the mount point busy for the /dev/sdb. I will try to adapt it to try the old way first, then try the bare device.