Total newb to Raspberries here, never touched Linux either.
I've just gotten an Rpi 3 with 3.5" LCD and installed RASPBIAN JESSIE WITH PIXEL via Etcher to 8 GB card following the instructions on the website. Etcher said that some issues are possible, but burning went kinda fine.
However the LCD just shows a white screen. It didn't respond to my keyboard or mouse activity. Connected it to a TV via HDMI, I get
Kernel Panic: VFS : Unable to mount root fs on unknown-block (179,2).
I googled that error, but nothing seems to be of help to me.
SD card is 8 GB but on my PC it shows 20 out of 40.3 MB available, idk if it's normal or not.
EDIT: So, I formated my SD, checked it for corrupted sectors and problems (didn't find any) and Etcher'ed it again. Guess what? Same problem, this time, I did save the message from Etcher:
The write has been completed successfully but Etcher detected potential corruption issues when reading the image back from the drive. Please consider writing the image to a different drive.
I don't have any other SD's atm and corrupting another one doesn't sound super cool to me tbh. I hope someone had simillar issue and could help me with mine.