Re: refind: account for btrfs setups when generating manual stanzas

[slymattz <slymattz@users.noreply.github.com>]

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New comment by slymattz on void-packages repository

https://github.com/void-linux/void-packages/pull/48906#issuecomment-1962998828

Comment:
[ac296e2](https://github.com/void-linux/void-packages/pull/48906/commits/ac296e2730e335c4b4ed0c36fbdada4021242600)
I tested the following setup:

/etc/default/refind-kernel-hook.conf
```
#!/bin/sh

# Change this line to 1 to update refind conf whenever new kernel is installed
UPDATE_REFIND_CONF=1

# refind.conf location
# It usually stays in
#
# /boot/EFI/refind/refind.conf
#       if you use all default configuration and EFI partition mounted to /boot
# /boot/efi/EFI/refind/refind.conf
#       if using default configuration and EFI partition mounted to /boot/efi
# /boot/EFI/BOOT/refind.conf
#       if you run refind-install --usedefault and EFI partition mounted to /boot
# /boot/efi/EFI/BOOT/refind.conf
#       likewise, EFI mounted to /boot/efi
# /efi/EFI/refind/refind.conf
# /efi/EFI/BOOT/refind.conf
REFIND_CONF=/boot/efi/EFI/refind/refind.conf

# Set the label of the Void Linux filesystem
REFIND_LABEL="KC1TB-tank"

# Set the path pointing to where rEFInd should look for vmlinuz and initramfs files, e.g. /boot
REFIND_BOOT_PREFIX=void/ROOT/boot

# Additional kernel cmdline parameters
OPTIONS="root=UUID=a9ee6e45-d348-4214-9560-0d0c73ab8077 ro rootflags=subvol=void/ROOT mem_sleep_default=deep i915.modeset=1 video=1920x1080 loglevel=4"
```
After running `xbps-reconfigure -f linux6.6 linux6.1` and rebooting, the manual boot entries boot successfully :)