Checking SD card integrity/Linux: Difference between revisions

Revision as of 02:43, 23 June 2022

This is an add-on section for checking your SD card for errors using F3.

Depending on the size of your SD card and the speed of your computer, this process can take up to several hours!

This page is for Linux users only. If you are not on Linux, check out the Windows or Mac pages.

What You Need

The latest version of F3 (the .zip file)

Instructions

Unzip the f3 .zip
cd into the f3 directory
Run make to compile F3
Insert your SD card into your computer
Mount your SD card
Run ./f3write <your SD card mount point>
Wait until the process is complete. See below for an example output.

 $ ./f3write /media/michel/6135-3363/
 Free space: 29.71 GB
 Creating file 1.h2w ... OK!
 ...
 Creating file 30.h2w ... OK!
 Free space: 0.00 Byte
 Average Writing speed: 4.90 MB/s

Run ./f3read <your SD card mount point>
Wait until the process is complete. See below for an example output.

 $ ./f3read /media/michel/6135-3363/
 SECTORS                        ok/corrupted/changed/overwritten
 Validating file 1.h2w ... 2097152/        0/      0/      0
 ...
 Validating file 30.h2w ... 1491904/        0/      0/      0
 ...
 Data OK: 29.71 GB (62309312 sectors)
 Data LOST: 0.00 Byte (0 sectors)
 Corrupted: 0.00 Byte (0 sectors)
 Slightly changed: 0.00 Byte (0 sectors)
 Overwritten: 0.00 Byte (0 sectors)
 Average Reading speed: 9.42 MB/s

If the test shows the result Data LOST: 0.00 Byte (0 sectors), your SD card is likely good. You can delete all .h2w files on your SD card.

If the test shows any other results, your SD card is failing. You will have to replace it!

@@ Line 4: / Line 4: @@
 This page is for Linux users only. If you are not on Linux, check out the [[Checking SD card integrity/Windows|Windows]] or [[Checking SD card integrity/Mac|Mac]] pages.
-<big>{{warning|text=Copy all of your SD's contents to your PC and then [[Formatting_an_SD_card|format the SD card]] before starting this guide. If you do not, F3 will be unable to test the parts of the SD that still have data in them.}}</big>
 == What You Need ==
@@ Line 11: / Line 9: @@
 == Instructions ==
-# Extract the F3 <code>.zip</code> file
+# Unzip the f3 <code>.zip</code>
-# Open a terminal window and <code>cd</code> into the F3 directory
+# <code>cd</code> into the f3 directory
 # Run <code>make</code> to compile F3
 # Insert your SD card into your computer