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How to test and safely keep using your janky RAM without compromising stability using memtest86+ and the memmap kernel param.

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[-] Corbin@programming.dev 1 points 4 days ago

Well done. I recently revived the BadRAM kernel patch in order to do something similar; memtest86+ supports that functionality too, using , , , .

[-] kumi@feddit.online 2 points 4 days ago* (last edited 2 days ago)

I'm curious: What's motivating you to do that when the memmap param can do the same without patching?

[-] F04118F@feddit.nl 2 points 5 days ago

This is amazing!! I had no idea this was possible!

One point of feedback: not having worked with memmap before, it is not immediately obvious to me which hex means what (I am guessing RANGE@START? ). Would be nice to have a link to an explanation there.

I am definitely sharing this, thank you for writing the blog!

[-] kumi@feddit.online 3 points 5 days ago* (last edited 5 days ago)

Thank you, I'm glad you like!

not having worked with memmap before, it is not immediately obvious to me which hex means what (I am guessing RANGE@START? ). Would be nice to have a link to an explanation there.

I just have the link to the kernel docs because I think they do a better job explaining it than I would ๐Ÿ˜

But yeah, basically. Except for this use-case you want RANGE$START not @. And you can use human sizes like 128M$RANGE.

[-] jwt@programming.dev 1 points 5 days ago

Ooh, that rasdaemon looks interesting. thank for sharing!

this post was submitted on 06 Jan 2026
51 points (100.0% liked)

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