| littlebigman |
11-19-2013 09:01 AM |
Making sense of NAND memory in embedded device
Hello
To get back up and running after the PSU blew up, I successfully installed Debian7 on a SheevaPlug on a 4GB SD card.
However, since this device has a 512MB NAND flash memory, I'd rather install the OS there.
But this newbie needs to understand what is wrong with it, and how to access it:
Code:
# fdisk -l
Disk /dev/mtdblock0: 1 MB, 1048576 bytes
255 heads, 63 sectors/track, 0 cylinders, total 2048 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mtdblock0 doesn't contain a valid partition table
Disk /dev/mtdblock1: 4 MB, 4194304 bytes
255 heads, 63 sectors/track, 0 cylinders, total 8192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xee020f10
Disk /dev/mtdblock1 doesn't contain a valid partition table
Disk /dev/mtdblock2: 531 MB, 531628032 bytes
255 heads, 63 sectors/track, 64 cylinders, total 1038336 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mtdblock2 doesn't contain a valid partition table
Disk /dev/mmcblk0: 3957 MB, 3957325824 bytes
4 heads, 16 sectors/track, 120768 cylinders, total 7729152 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000332e9
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 * 2048 440319 219136 83 Linux
/dev/mmcblk0p2 440320 7286783 3423232 83 Linux
/dev/mmcblk0p3 7288830 7727103 219137 5 Extended
/dev/mmcblk0p5 7288832 7727103 219136 82 Linux swap / Solaris
Why all those "Disk /dev/mtdblockX doesn't contain a valid partition table" messages?
Thanks for any hint. |
