[ltp] Re: Error 2100 - SSD in good health, but not booting into laptop

Stefan Monnier linux-thinkpad@linux-thinkpad.org
Tue, 03 Jan 2017 16:22:12 -0500

> I have a T530 with Samsung 840 EVO SSD running Arch Linux. Been running
> fine (for three years) then just wouldn't boot. Got the "2100: Detection
> error" screen of death but the drive passes Lenovo diagnostics (all SMART
> tests, etc.). With an Arch or Ubuntu Live CD it boots and I can mount the
> SSD (and made a full backup). I reformatted the SSD and put a fresh OS on
> it, but it still drops right into the boot menu like it doesn't see the
> bootable HDD at all.

How did you "reformat" exactly?

My understanding is that the boot of SSDs is a fairly costly operation
which can take a fair bit of time, so maybe your SSD just takes too long
now (compared to the time expected by the Thinkpad BIOS) because the
data layout on disk changed to be "pathological".

So maybe if you do a "low level reformat" (presumably using a tool from
Samsung), or maybe something equivalent can be done by "trim"ming
(https://en.wikipedia.org/wiki/Trim_%28computing%29) the whole drive
(which your "reformat" might actually have done already, but maybe not)?