Install Debian on This Marvell CPU NAS (no replies)

EFM IPTIME NAS 1 DUAL image

First, Thank you for your Kirkwood Debian
and I have a Question about that NAS
EFM IPTIME NAS 1 DUAL image
Product Name : EFM IPTIME NAS1dual
CPU : Mavell 88F6820 (1.6 GHz) Dualcore
RAM : DDR3 2GB

This Product use ash, Kernel is (This Image)
and it use ramdisk and mound at root
((IMAGE))
Can I install Debian in this nas without damage to the original Kernel and Hard Drive ?

and i will install debian on usb