I'm having a problem accessing the data from a drive that was in my NAS but is now plugged in via a USB caddy. This drive was not in a RAID array as it was a volume with a single disk. Although it seems the synology (DS414) NAS might have used SHR when it constructed the volume. The drive was removed to make way for a larger drive to expand another volume. Now I would like to retrieve the data from this drive, but it appears to not be accessible.
When plugged in via a caddy the old drive is not recognized, although it does show up with
Disk /dev/sdq: 750.1 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdq1 1 311 2490240 fd Linux raid autodetect Partition 1 does not end on cylinder boundary /dev/sdq2 311 572 2097152 fd Linux raid autodetect Partition 2 does not end on cylinder boundary /dev/sdq3 588 91201 727848912 f Win95 Ext'd (LBA) /dev/sdq5 589 91189 727744480 fd Linux raid autodetect
I have tried using
mdadm -A --verbose --run /dev/md4 /dev/sdq5 then
mount /dev/md4 /mnt/usb but I get a simple no such device response.
cat /proc/mdstat returns
md4 : active raid1 sdq5 727743296 blocks super 1.2 [1/1] [U]
resize2fs commands as well to try and fix possible faults with the filesystem. I've also tried using sdq3. But none of this works.
Does anyone know how I can access the data on this single drive?