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Can you use 1 large SSD device for booting and data (2 partitions) on Pi4?

Raspberry Pi Asked by tomd on January 13, 2021

I want to use one partition for booting (RASPIOS) and one for the data files. The reasons I have are: 1- cost per GB on SSD devices is less and 2-separate devices causes more heat along with increased load on the power supply. Any booting problems using 2 partitions on one SSD?

2 Answers

You wrote:

I want to use one partition for booting (RASPIOS) and one for the data files.

The Raspberry Pi OS uses two partitions by default: one for booting, formatted as fat32, and one as root filesystem, formatted as ext4, containing all modules and programs to run the operating system. With a default Raspberry Pi OS the second partition is expanded to its maximum size on first bootup of the image. If using a big SSD device there is a lot of free space available on the second partition you want to store data files. Just create a directory:

rpi ~$ sudo mkdir /data

and use this directory as storage for the data files.

Answered by Ingo on January 13, 2021

Yes, you can partition an SSD.

If you're using Windows you can use this guide to partition your SSD: https://www.wikihow.com/Partition-a-Drive-on-Windows

You can then use a tool like Etcher to flash the .iso to the partition you created for your OS.

You can use the other partition for normal storage.

Answered by aklingam on January 13, 2021

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