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I'm running a script I found at github.com/rufferson/pureos-pinephone/tree/fd5ecbc2e6b8452545dd93db5235a6e20443071c to convert a Pinephone 64 3GB .img file to a PureOS .img that the PP 64 can boot.

When it reaches the losetup part, I'm getting a mount error:

  • sudo losetup -f
  • LO=/dev/loop26
  • sudo losetup -P /dev/loop26 librem5r4.img
  • sudo mount /dev/loop26p2 sd mount: /home/steve/purepp/sd: unknown filesystem type 'crypto_LUKS'

From what I understand, the losetup default is to create an unencrypted loop device. I've tried inserting the [ -e none ] option into the losetup command, but apparently "-e" is an invalid option.

Why would losetup create an encrypted loop device when the default is unencrypted?

TIA for any asistance provided.

ssilvi

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  • Please refer askubuntu.com/help/on-topic, Ubuntu and official flavors of Ubuntu (ubuntu.com/download/flavours) are on-topic on this site. The on-topic link provides alternate SE sites for non-Ubuntu OSes.
    – guiverc
    Jun 16, 2021 at 8:15
  • @guiverc: OK. Since the script errors out in both 18.04 and 21.04, I figured maybe the underlying Ubuntu OS was responsible for creating the encrypted loop device. I'll try the other forum. Thanks.
    – delta1071
    Jun 16, 2021 at 21:04
  • Maybe because the partition in the image you try to mount is LUKS-encrypted?
    – Sebastian
    Jun 19, 2021 at 10:13
  • Yes. it is. In the script I'm using, losetup is creating a loop device with a non-encrytped boot partition and a LUKS-encrypted root partition. The problem I'm having is how to mount the root partition so the script recognizes the LUKS filesystem. The script doesn't contain the necessary commands to do that. Anyhow, the author of the script has offered to add the appropriate commands to his script.
    – delta1071
    Jun 19, 2021 at 18:36

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