I'm struggling to get this working on my 3B+ - I am able to get to the stage of replicating BOOT/ROOT over to the USB device, but it fails to mount ROOTthis also happens if I choose not to copy over (I did download a copy of raspbian onto the SSD using the raspberry PI imager)Code:
Replicating BOOT/ROOT contents from /dev/mmcblk0 to /dev/sda (this will take a while)BOOT/ROOT contents replicated from /dev/mmcblk0 to /dev/sdamount: /tmp/usb-boot-mnt: mount(2) system call failed: Cannot allocate memory.Unable to mount ROOT partition
When I rebooted I was still booted from the SD card.
I just loaded a fresh copy of Raspberry Pi OS Bookworm onto an SD card and booted it on a Raspberry Pi 3B+. I then ran usb-boot to copy the running SD card to a 1TB USB SSD, answering 'Yes' to 'Use SD card to boot the USB device (recommended)?':
Code:
Replicating BOOT/ROOT contents from /dev/mmcblk0 to /dev/sda (this will take a while)BOOT/ROOT contents replicated from /dev/mmcblk0 to /dev/sdaSD card must remain in place to boot the USB deviceCode:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTSsda 8:0 0 931.5G 0 disk├─sda1 8:1 0 512M 0 part└─sda2 8:2 0 931G 0 part /mmcblk0 179:0 0 14.4G 0 disk├─mmcblk0p1 179:1 0 512M 0 part /boot/firmware└─mmcblk0p2 179:2 0 13.9G 0 partI would need complete details of what you have and what you're doing to investigate your problem further.
Statistics: Posted by RonR — Fri Apr 25, 2025 9:13 pm