user@T3620:~/DNAS_V3.6$ lsmtd
DEVICE MAJ:MIN NAME                    TYPE SIZE 
mtd0    90:0   2MiB PCMCIA Memory card nor    2M

user@T3620:~/DNAS_V3.6$ sudo mtdinfo /dev/mtd0
mtd0
Name:                           2MiB PCMCIA Memory card
Type:                           nor
Eraseblock size:                131072 bytes, 128.0 KiB
Amount of eraseblocks:          16 (2097152 bytes, 2.0 MiB)
Minimum input/output unit size: 1 byte
Sub-page size:                  1 byte
Additional erase regions:       0
Character device major/minor:   90:0
Bad blocks are allowed:         false
Device is writable:             true
Eraseblock region 0:  offset: 0 size: 0x20000 numblocks: 0x10

user@T3620:~/DNAS_V3.6$ sudo mtd_debug info /dev/mtd0
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NORFLASH
mtd.size = 2097152 (2M)
mtd.erasesize = 131072 (128K)
mtd.writesize = 1 
mtd.oobsize = 0 
regions = 1

region[0].offset = 0x00000000
region[0].erasesize = 131072 (128K)
region[0].numblocks = 16
region[0].regionindex = 0

user@T3620:~/DNAS_V3.6$ sudo dd if=/dev/mtd0 of=DNAS_V3.6.bin
4096+0 records in
4096+0 records out
2097152 bytes (2.1 MB, 2.0 MiB) copied, 1.88968 s, 1.1 MB/s

user@T3620:~/DNAS_V3.6$ sha256sum -b DNAS_V3.6.bin 
c314ce7c1cff1d75d298eb00c279719963ef70a61d32e12b1421e68cf016110f *DNAS_V3.6.bin

