We understand you have one of the Intel® SSD 320 series and it is only showing 8MB size.
It is always important to have the SSD in the latest firmware version, just like you already did, but also, we can suggest you try a secure erase on it and check if the situation is fixed.
In the case that your SSD keeps showing the incorrect size, we highly recommend you to contact our https://www.intel.com/content/www/us/en/support/contact-support.html support department. (You need to look for Hardware and then click on Memory and Storage)
I can't erase the disk even if I reboot the pc. Have no option with toolbox.
And, oh yes I don't find any contact form on support page and my SSd's ISN is not recognized by your website.
Thanks for reporting this situation.
We will be working on this with you over private message, please check those, we will be giving you instructions on how to proceed.
You found a solution for me but as you know I was not at home.
Actually, I'm back and tried to contact "Intel" about that and I don't receive any answer.