INTL 3:770/1 3:770/3   
   REPLYADDR theom+news@chiark.greenend.org.uk   
   REPLYTO 3:770/3.0 UUCP   
   MSGID:  e45f3437   
   REPLY:  a8036a0d   
   PID: SoupGate-Win32 v1.05   
   Chris Green  wrote:   
   > I have just tried booting my old[ish] 1Gb memoory Pi4 from USB instead   
   > of from a micro-SD card.  I just copied the SD card to a USB stick,   
   > plugged the USB and turned on.  It works, no hassle at all.   
   >   
   > The 'oddity' is that the green activity LED now flickers regularly   
   > once a second, when booting from the SD card it's on for a while to   
   > start with, flickers randomly for a while and then is essentially off   
   > all the time (with tiny flashes occasionally).  Booting from the USB   
   > is similar at the start but settles down to quite a long flash of   
   > the green light at what looks like one second intervals.   
      
   You can disable the LED from showing disc access if you prefer:   
   https://www.raspberrypi.com/documentation/computers/configuratio   
   .html#power-led-2   
      
   > While I'm about it - what a load of pointless waffle there is about   
   > booting a Pi 4 from USB if you do an internet search. I did a quick   
   > look at some of them, pages of instructions which basically boiled   
   > down to 'write the Pi image file on a USB stick and plug it in'! It   
   > works just the same as an SD image.  The only thing that might be of   
   > interest is that you can set the order of looking for the image in the   
   > firmware so that either SD card or USB is checked first.   
      
   IIRC it didn't work at launch, so people came up with various workarounds.   
   Then support has gradually got better.  The fact there's an EEPROM that   
   allows upgrading the firmware means that's possible, whereas previous   
   versions relied on bootloaders on the SD card and USB boot support in the   
   first-stage ROM bootloader was limited.   
      
   Theo   
      
   --- SoupGate-Win32 v1.05   
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)   
   SEEN-BY: 10/0 1 15/0 90/1 103/705 105/81 106/201 128/260 129/305 134/100   
   SEEN-BY: 135/225 153/135 143 757 802 7715 218/0 1 601 700 840 870   
   SEEN-BY: 218/930 220/70 221/1 6 226/17 30 100 227/114 229/110 112   
   SEEN-BY: 229/113 200 206 307 317 400 426 428 470 550 616 664 700 240/1120   
   SEEN-BY: 266/512 267/800 282/1038 291/111 292/854 301/1 113 812 310/31   
   SEEN-BY: 320/219 322/757 335/364 341/66 342/200 396/45 460/58 633/280   
   SEEN-BY: 712/848 770/1 3 100 330 340 772/210 220 230 5020/400 1042   
   SEEN-BY: 5058/104 5075/35   
   PATH: 770/3 1 153/757 221/6 301/1 218/700 229/426