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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 14 Apr 2018
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      So I just had a fun / probably bad idea: I'd like to convert my Arch PC to use encryption on the root partition. I'll likely try copying the root filestructure to an external drive before formatting, doing a fresh install in a dm-crypt part, and then copy back. Would that work?

      5 replies 0 retweets 2 likes
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    2. Colonel Panic  💻 🔨 🌐 ෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴෴‏ @coderobe 14 Apr 2018
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      Replying to @hedgeberg

      Yes, but don't forget to prepare the target system bootloader & initramfs for decrypting the rootfs

      2 replies 0 retweets 2 likes
    3. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 14 Apr 2018
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      Replying to @coderobe

      Yeah, hence why i was thinking the fresh install bit. get that all configured and working before flashing back. I'll probably take a dd image of both the boot and root partitions in addition to copying the root filestructure just to be safe.

      2 replies 0 retweets 0 likes
    4. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 14 Apr 2018
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      Replying to @hedgeberg @coderobe

      Dealt with too much embedded shit where a bootable image is just like 512 MB and you can dump/flash in 5 minutes on even the slowest bus >.<

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 14 Apr 2018
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      Replying to @hedgeberg @coderobe

      You don't even need a fresh install. Just prepare the bootloader to have the right config for decryption ahead of time (and the right initramfs modules), then dump and restore filesystem. Make sure to preserve ownership (tar -p or rsync -avHAX or similar).

      2 replies 0 retweets 0 likes
    6. Hector Martin‏ @marcan42 14 Apr 2018
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      Replying to @marcan42 @hedgeberg @coderobe

      Linux is very friendly to simple file-based restores. I've done this many times. My own workstation has been transplanted through many storage setups and hardware over 14 years without reinstalling.

      1 reply 0 retweets 1 like
    7. Hector Martin‏ @marcan42 14 Apr 2018
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      Replying to @marcan42 @hedgeberg @coderobe

      If anything goes wrong, as long as your filesystem got copied over properly, you can always boot off a live iso (I recommend systemrescuecd), mount the partitions, chroot and fix it.

      1 reply 0 retweets 1 like
    8. Hector Martin‏ @marcan42 14 Apr 2018
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      Replying to @marcan42 @hedgeberg @coderobe

      Now if you do this with *Windows*... That's a whole different story. I've done it once. It wasn't fun. Possible, but not fun.

      1 reply 0 retweets 1 like
    9. Hector Martin‏ @marcan42 14 Apr 2018
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      Replying to @marcan42 @hedgeberg @coderobe

      Consider: Gentoo is *shipped* as a tarball you untar and that's your root filesystem. Literally the install process is just fdisk;mkfs;mount;tar xpf;chroot, then configure a kernel and bootloader (and other misc settings). No different than a backup!

      2 replies 0 retweets 0 likes
    10. yoshi314‏ @wengo314 15 Apr 2018
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      Replying to @marcan42 @hedgeberg @coderobe

      i actually keep pestering other distros to do the same. having an elaborate bootloader setup is something no distro installer will ever support. opensuse can do it, but they don't ship tarballs.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 15 Apr 2018
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      Replying to @wengo314 @hedgeberg @coderobe

      I've done some horrible things to Ubuntu (not my choice). You can get some pretty nonstandard setups to work with preseed scripts and patches, but then you wind up having to divert files so it doesn't stomp over your setup on updates... It's ugly. I run Gentoo on my stuff.

      2:49 AM - 15 Apr 2018
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