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I have tried the solution as presented here What to do about "the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present"? as well as its original source http://punygeek.blogspot.com/2012/10/ubuntu-1204-how-to-solve-disk-drive-for.html here several times.

What's happening is that every time I reformat my linux-swap with Gparted, it works perfectly well as long as my session lasts. Whenever I reboot, the swap partition becomes "unknown" as displayed in Gparted, needless to say “the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present” is still present.

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  • This worked for me: How can I repair grub? (How to get Ubuntu back after installing Windows?)
    – JJD
    May 12, 2014 at 20:47
  • I am still having the problem after running the Punygeek process - it works up to the point where I reboot the system, then comes back with the same error again, and Gparted reports that the linux-swap partition goes back to being unknown.
    – user293526
    Jun 14, 2014 at 16:31

1 Answer 1

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Try this if on 12.04, probably work for other distros too. Already answered here:

"Disk drive for dev/mapper/cryptswap 1 is not ready"

You could also look here:

http://punygeek.blogspot.nl/2012/10/ubuntu-1204-how-to-solve-disk-drive-for.html

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