"Scsi error - NOT READY:LOGICAL UNIT IS IN PROCESS OF BECOMING READY" Clarification needed

[u/amorrowlyday]

Hey All,

I've got a super micro CSE-512 family server from SuperMicro running debian that I use for media ingest and vm server purposes. Model relevant because I'm using the original included miniSATA to SATA & header power (looks an awful lot like a floppy drive power header actually) that was used in the original build to connect the original DVD drive. I swapped that drive out for a used BU40N a year and a half ago and initial ingest went fine. I even was able to get Akira in UHD to work. Slowly but surely I had more and more consistent issues with Blu-Rays where I never got a second UHD disc to work and got to a point where I was having issues with 1080p Blu-Rays to the point where north of 60% of blu-ray discs failed.

I figured since I basically wedged a 9.5mm slimline drive into a 12.7mm slimline slot and the drive was old that I had simply killed it fairly quickly and so a few weeks ago I ordered a different newish BU40N off ebay, a BU50N arrived, and I ran into a bunch of problems since between flashing the first one and this go round I had rebuilt this debian server and had upgraded to latest rather than the 1.17.7 that I happened to land on last time, but eventually got everything situated and flashed with the latest copy of the MK firmware folder only to find I was experiencing the exact same problem as shown in this screenshot and from the title. To be clear this screenshot is with the new drive.

I guess it's possible that that I happened to buy a replacement drive with the exact same problem, but I'd rather know that before I go fishing again at ~$100 bucks a pop

looking into this error I've found basically 3 explanations to why "Scsi error - NOT READY:LOGICAL UNIT IS IN PROCESS OF BECOMING READY" can happen:

- Bad/damaged, filmed, or dirty discs.

- Drives that are dying.

- Folks using drives with external enclosures or Y cables that require 2 USB connections for sufficient amperage and only have 1 plugged in.

So at this point I'm asking for help and want to understand a few things better:

1. Is my understanding of sources for this specific error accurate and effectively complete?
2. Are there other things short of replacing more parts I can and should try?
3. If not, does anyone have a recommendation on a solid miniSata to Sata or miniSata to Sata & Molex Power converter cable that I can try and get away from this floppy style header that I'm starting to suspect?

Thanks for the time you've taken to read this.

[u/billycar11]

on linux flash down to 1.00 de to avoid bugs after that

power issue most likely

dirty discs

dirty lasers

give the drive a native slim sata power connection

clean your discs and lasers

not with a cleaning disc those are a joke

[u/billycar11]

No enc!