I recently received an ASUS laptop from a friend to install Linux on it. However, the problem is that the disk is not working. But that is not the case. When I used the 'lsblk' command, I noticed a 22.4GB 'sdb' disk in addition to the 238GB 'sda' and 58GB 'sdc' installation media. I am curious as to what this disk is, why it is there, and any additional information.
ps: Sorry if this model is not a Chromebook, I am not entirely sure, and sorry if it was in the manual - I must have missed it.