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Persistent device name for root filesystem

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#1 Sat, 2016-08-13 19:31
10101
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Anyone know how boot with a UUID as the partition identifier, via kernel parameters? Here's my syslinux config:

timeout 1
prompt 1
default alpine
label alpine
  kernel /boot/vmlinuz-grsec
  append initrd=/boot/initramfs-grsec root=PARTUUID=51951295-434a-41b1-ad3b-cb1cbf49afb8 modules=ext4 quiet

I'm getting:

mount: mounting PARTUUID=51951295-434a-41b1-ad3b-cb1cbf49afb8 on /sysroot failed: No such file or directory
Mounting root failed.

I suspect it's because the default initramfs isn't using udev (although I have eudev installed.) I just thought I'd ask here before I start looking into writing a mkinitfs "hook" that runs and sets up udev so the UUID block device is available to be mounted.