Subj : Issue w/ Booting from USB & Fix
To   : All
From : paulie420
Date : Mon Sep 21 2020 11:15 am

USB connector.

Neat right? Well, not so much... the SSD to USB connector that they
used has cheap UAS and after copying over my SDcard to the SSD it
wouldn't boot normally.

I was getting fails by systemctl all thru the boot process, and it
would end at a black screen with just a cursor - or, it sometimes would
get me to a text linux login prompt. Neither were my normal GUI that it
should have booted to.

Long story short, if you're experiencing this with an SSD to USB
connector, OR if you're simply experiencing very low data rates while
on SSD over USB, you need to read this sticky that I ended up finding
after hours of research:

https://www.raspberrypi.org/forums/viewtopic.php?t=245931
STICKY: If you have a Raspberry Pi 4 and are getting bad speeds
transferring data to/from USB3.0 SSDs, read this

Seems that some Jmicron, and other SSD to USB cables are inferior and
are finicky with RPi 4's. So, I had to do a 'mesg' on the SSD and get
some part numbers specific to my cable and edit the cmdline.txt file on
/boot with a usb.quirks=xxxx:xxxx:b line... however, this disables UAS
which.... I can't understand, other than being cheap and stupid, why
NesPi would use this cable! So stupid, if I'm intending to use this
case as a USB Boot device. Derp!!!

Maybe they just thought it would be for mass-storage, but I wanted to
BOOT to it. Anyway, I'll buy a good connector and save this NesPi case
for a diffferent application... but how stupid is that.

Anyway, for anyone doing USB boot on a Raspberry Pi 4, with issues...
this might be a great place to start - and save you tons of time. :P

After I editing the cmdline.txt, the system boots directly into my GUI
and I'm getting 270,000 sequentials, 5500read and 5000write speeds. 

:shrug:

Cheers, Pi BBS users.

|07p|15AULIE|0342|07o
|08.........

--- Mystic BBS v1.12 A46 2020/08/26 (Windows/32)
 * Origin: www.theunderground.use:10023 (314:314/255)
e for mass-storage, but I wanted to
BOOT to it. Anyway, I'll buy a good connector and save this NesPi case
for a diffferent application... but how stupid is that.

Anyway, for anyone doing USB boot on a Raspberry Pi 4, with issues...
this might be a great place to start - and save you tons of time. :P

After I editing the cmdline.txt, the system boots directly into my GUI
and I'm getting 270,000 sequentials, 5500read and 5000write speeds. 

:shrug:

Cheers, Pi BBS users.

|07p|15AULIE|0342|07o
|08.........

--- Mystic BBS v1.12 A46 2020/08/26 (Windows/32)
 * Origin: www.theunderground.use:10023 (314:314/255)

.