##THIS IS WIP - the USB image is not included at the moment!
This repositories contains scripts for flashing a SD card and an USB flash drive for the usage with a RaspberryPI. The SD card could be as small as 64 MB but it will be hard to find one in this size. The USB flash drive has to be 6 GB in size at minimum. The idea is to boot from the SD card and run the OS from the USB flash drive.
The OS is a Debian Jessie Linux and the image can be found at https://www.raspberrypi.org/downloads/raspbian/.
Following, we will show the simple steps to flash both the SD card and the USB flash drive.
Obviously, you need a RaspberryPI. It does not matter if it's an older or newer model. They all have USB slots. Different are the SD card slots. The older models need a standard SD card and the new models need a microSD card.
What you need else is power.
We did all this on MAC OS X. The only thing you need to install is dcfldd. Assuming you have Homebrew installed
(and if not stop here and do it now), it's the usual command:
brew install dcfldd
Side note: the sources of dcfldd are hosted at sourceforge. Just sayin' ...
You will need the following files form the directory files in this repository:
- rpi_prep_sd.sh
- rpi_boot.img
- mbr_sd.txt
Now follow these steps:
Mac books do have a slot for SD cards. You may need an adapter for a microSD card. But you could also use an external card reader.
Now use the OS X command line programm diskutil to find the SD card:
~/p/s/r/files git:master: diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Macintosh HD 439.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data BOOTCAMP 60.1 GB disk0s4
/dev/disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +439.0 GB disk1
Logical Volume on disk0s2
31CFA6B8-A369-4BEE-B85E-2DF787B7B407
Unlocked Encrypted
/dev/disk2 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *30.9 GB disk2
1: Windows_FAT_32 boot 58.7 MB disk2s1*
In this case the SD Card is located at /dev/disk2.
Iportant: Please be very careful here. If you choose the wrong location, you will crash your OS!
Change now into the directory files with cd files. Then run the script rpi_prep_sd.sh and give the location
of the SD card received in step 2. as an argument. You need to this with sudo:
~/p/s/r/files git:master: sudo ./rpi_prep_sd.sh /dev/disk2
Password:
Unmount of all volumes on disk2 was successful
fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory
writing image rpi_boot.img
1792 blocks (56Mb) written.
1792+0 records in
1792+0 records out
Unmount of all volumes on disk2 was successful
If you are prompted with a warning like this at the beginning
simply click it away by hitting Ignore.
That's it! Remove the SD card with and put it into the slot of your RaspberryPI.
You will need the following files form the directory files in this repository:
- rpi_prep_usb.sh
- rpi_data.img
- mbr_usb.txt
Now follow these steps:
This should be a fairly simple task. You can also put it into an external usb hub.
Now use the OS X command line programm diskutil to find the USB flash drive:
~/p/s/r/files git:master: diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Macintosh HD 439.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data BOOTCAMP 60.1 GB disk0s4
/dev/disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +439.0 GB disk1
Logical Volume on disk0s2
31CFA6B8-A369-4BEE-B85E-2DF787B7B407
Unlocked Encrypted
/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *30.8 GB disk4
1: Linux 5.0 GB disk4s1*
In this case the USB flash drive is located at /dev/disk4.
Iportant: Please be very careful here. If you choose the wrong location, you will crash your OS!
Change now into the directory files with cd files if you are not there already. Then run the script rpi_prep_usb.sh
and give the location of the USB flash drive received in step 2. as an argument. You need to this with sudo:
~/p/s/r/files git:master: sudo ./rpi_prep_usb.sh /dev/disk4
Password:
Unmount of all volumes on disk4 was successful
fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory
writing image rpi_data.img
152459 blocks (4764Mb) written.
152459+1 records in
152459+1 records out
Unmount of all volumes on disk4 was successful
If you are prompted again with a warning like this at the beginning
simply click it away by hitting Ignore.
That's it! Remove the USB flash drive and put it into the slot of your RaspberryPI.
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