Mount HDD outside of Synology Box over USB

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quick and dirty.

connect via terminal over ssh



became "root" permissions

sudo -i


list disks

fdisk -l


in this example, my source drive

Disk /dev/sdr: 931.5 GiB, ...

Device     Boot   Start        End    Sectors   Size Id Type
/dev/sdr1          2048    4982527    4980480   2.4G fd Linux raid autodetect
/dev/sdr2       4982528    9176831    4194304     2G fd Linux raid autodetect
/dev/sdr3       9437184 1953320351 1943883168 926.9G fd Linux raid autodetect


look for an free md-slot and change "/dev/mdX"

mdadm -A --verbose --run /dev/mdX /dev/sdr3


mdadm: looking for devices for /dev/md4
mdadm: /dev/sdr3 is identified as a member of /dev/md4, slot 0.
mdadm: added /dev/sdr3 to /dev/md4 as 0
mdadm: /dev/md4 has been started with 1 drive.

... ok, its fine


needed or not?

mdadm -Sf /dev/md4

mdadm -Asf && vgchange -ay


check for correctness

fdisk -l


Disk /dev/md4: 926.9 GiB, ...
Disk /dev/md127: 2 GiB, ...
Disk /dev/md126: 2.4 GiB, ...

... ok


make a dir in useable range for "File Station"

mkdir /volume1/public/tmp


mount "/dev/mdX" with read-only permission

mount /dev/md4 /volume1/public/tmp -o ro



greets Sky

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