My system seems SLOW.

In addition, I've suffered file corruption, both to my FAT32 /boot/ and to the ext3 partition.

I haven't a clue why it might be slow as the SD card is a quality Phillips card very recently (within last fortnight) imaged and verified with Etcher.

How can I check if (somehow) the SD card is going or gone?

I had to write over the files on /boot/ with fresh copies to even get the Pi to boot today.

Are some SD cards just kind of - only half good?!

I'm surprised a branded card is giving me these issues.


1 Answer 1


The only check I know of is fsck, and its underlings e2fsck and fsck.vfat. A recent answer here provided a step-by-step procedure for this.

There's another utility that may be useful for checking the speed: It's called agnostics, and is available through RPi's apt repository:

$ sudo apt-get update
$ sudo apt-get upgrade 
$ sudo apt-get install agnostics

There was an article on the RPi website about it recently.

  • 2
    hdparm -Tt /dev/<disk> will also run a nice speed test.
    – FelixJN
    Commented Jan 21, 2021 at 17:06

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