clone-image.txt

1. Insert microSD into USB3.0 reader
2. Check disk name
sudo fdisk -l

Disk /dev/sdx: 59.5 GiB, 63864569856 bytes, 124735488 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x1995eea1

Device     Boot  Start       End   Sectors  Size Id Type
/dev/sdx1         8192    532479    524288  256M  c W95 FAT32 (LBA)
/dev/sdx2       532480 124735487 124203008 59.2G 83 Linux

3. Make sure disk is not mounted
sudo mount | grep /dev/sdx
sudo umount /dev/sdx1 /dev/sdx2

4. Copy disk image to Synology
sudo ddrescue -d /dev/sdx /local/anesthesia/raspberry_os_images/install-1.img /local/anesthesia/raspberry_os_images/image-1.log

5. Restore image to microSD of same size or larger
sudo ddrescue -f /local/anesthesia/raspberry_os_images/install-1.img /dev/sdx /local/anesthesia/raspberry_os_images/restore-1.log


Example:
sudo ddrescue -d /dev/sde /local/anesthesia/raspberry_os_images/chamber-v1.img /local/anesthesia/raspberry_os_images/chamber-v1.log