How to properly install Ubuntu on HDD+SSD from a virtual optical drive?

Question

linux

I bought a Toshiba Satellite U940 DQS ultrabook , it has a 640GB Hitachi HTS541064A9E680 hard drive and a 32GB Samsung MZMPC032HBCD SSD. By default, disks are in RAID0.


hires
Task: install Ubuntu as a second system.
In this regard, a two-part question :
1) How do I get the BIOS (or rather UEFI) to see removable media? I put the USB boot priority as the first device, but nothing happens. At first I thought that the fact is that the ultrabook does not have an optical disk controller, and my piece of iron just emulates it virtually. But the usual bootable flash drive is also not detected.

2) Is it possible for Ubuntu to set an SSD as a caching drive, and if so, how? Or is it best to install both systems on an SSD, without any cache? As far as I know, there is a contradiction here: on the one hand, the system boots faster, on the other hand, the solid state drive dies earlier. I would like to hear specific figures for and against.

Answer 1

> solid state drive dies earlier
This is a gross exaggeration. My OS has been living on an SSD for almost three years now. No deterioration in performance (and even more so failures in operation) was noticed. Despite the fact that the SSD is not some Intel, but the most notorious OCZ, which is notorious :)
Feel free to install the OS on the SSD, and mount /home from the hard drive.

Answer 2

1) Disable emulation on USB, check the correctness of creating boot. flash drives
2) Impossibly expensive. You will not know the specific numbers in advance, it all depends on the intensity of use. Reduce swap to a minimum, put all axes on ssd.

Answer 3

AgentSIB , very correct advice, except maybe the last one. There is nothing wrong with the fact that all sorts of chromiums write to SSD. There, the volume of the recorded is nothing at all, at most a few GB per month.