Backup

Use dd to backup Intel Edison MMC

root@edison:~# dmesg
[420794.481542] mmc1: new high speed SDHC card at address 1234
[420794.482480] mmcblk1: mmc1:1234 SA16G 14.4 GiB
[420794.484152]  mmcblk1: p1

root@edison:~# dd if=/dev/mmcblk0 of=/dev/mmcblk1

root@edison:~# fdisk /dev/mmcblk0                                               
GPT PMBR size mismatch (7634944 != 7634943) will be corrected by w(rite).       

Welcome to fdisk (util-linux 2.24.2).                                           
Changes will remain in memory only, until you decide to write them.             
Be careful before using the write command.                                      


Command (m for help): p                                                         
Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 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                               
Disklabel type: gpt                                                             
Disk identifier: 21200400-0804-0146-9DCC-A8C51255994F                           

Device                 Start          End   Size Type                           
/dev/mmcblk0p1          2048         6143     2M Microsoft basic data           
/dev/mmcblk0p2          6144         8191     1M Microsoft basic data           
/dev/mmcblk0p3          8192        12287     2M Microsoft basic data           
/dev/mmcblk0p4         12288        14335     1M Microsoft basic data           
/dev/mmcblk0p5         14336        16383     1M Microsoft basic data           
/dev/mmcblk0p6         16384        65535    24M Microsoft basic data           
/dev/mmcblk0p7         65536       131071    32M Microsoft basic data           
/dev/mmcblk0p8        131072      3276799   1.5G Microsoft basic data           
/dev/mmcblk0p9       3276800      4849663   768M Microsoft basic data           
/dev/mmcblk0p10      4849664      7634910   1.3G Microsoft basic data

root@edison:~# fdisk /dev/mmcblk1 
GPT PMBR size mismatch (7634944 != 30367743) will be corrected by w(rite).
The backup GPT table is corrupt, but the primary appears OK, so that will be us.

Welcome to fdisk (util-linux 2.24.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): p
Disk /dev/mmcblk1: 14.5 GiB, 15548284928 bytes, 30367744 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
Disklabel type: gpt
Disk identifier: 21200400-0804-0146-9DCC-A8C51255994F

Device                 Start          End   Size Type                           
/dev/mmcblk1p1          2048         6143     2M Microsoft basic data           
/dev/mmcblk1p2          6144         8191     1M Microsoft basic data           
/dev/mmcblk1p3          8192        12287     2M Microsoft basic data           
/dev/mmcblk1p4         12288        14335     1M Microsoft basic data           
/dev/mmcblk1p5         14336        16383     1M Microsoft basic data           
/dev/mmcblk1p6         16384        65535    24M Microsoft basic data           
/dev/mmcblk1p7         65536       131071    32M Microsoft basic data           
/dev/mmcblk1p8        131072      3276799   1.5G Microsoft basic data           
/dev/mmcblk1p9       3276800      4849663   768M Microsoft basic data           
/dev/mmcblk1p10      4849664      7634910   1.3G Microsoft basic data

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Last updated 7 years ago

root@edison:~# fdisk /dev/mmcblk0 GPT PMBR size mismatch (7634944 != 7634943) will be corrected by w(rite). Welcome to fdisk (util-linux 2.24.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 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 Disklabel type: gpt Disk identifier: 21200400-0804-0146-9DCC-A8C51255994F Device Start End Size Type /dev/mmcblk0p1 2048 6143 2M Microsoft basic data /dev/mmcblk0p2 6144 8191 1M Microsoft basic data /dev/mmcblk0p3 8192 12287 2M Microsoft basic data /dev/mmcblk0p4 12288 14335 1M Microsoft basic data /dev/mmcblk0p5 14336 16383 1M Microsoft basic data /dev/mmcblk0p6 16384 65535 24M Microsoft basic data /dev/mmcblk0p7 65536 131071 32M Microsoft basic data /dev/mmcblk0p8 131072 3276799 1.5G Microsoft basic data /dev/mmcblk0p9 3276800 4849663 768M Microsoft basic data /dev/mmcblk0p10 4849664 7634910 1.3G Microsoft basic data

root@edison:~# fdisk /dev/mmcblk1 GPT PMBR size mismatch (7634944 != 30367743) will be corrected by w(rite). The backup GPT table is corrupt, but the primary appears OK, so that will be us. Welcome to fdisk (util-linux 2.24.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/mmcblk1: 14.5 GiB, 15548284928 bytes, 30367744 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 Disklabel type: gpt Disk identifier: 21200400-0804-0146-9DCC-A8C51255994F Device Start End Size Type /dev/mmcblk1p1 2048 6143 2M Microsoft basic data /dev/mmcblk1p2 6144 8191 1M Microsoft basic data /dev/mmcblk1p3 8192 12287 2M Microsoft basic data /dev/mmcblk1p4 12288 14335 1M Microsoft basic data /dev/mmcblk1p5 14336 16383 1M Microsoft basic data /dev/mmcblk1p6 16384 65535 24M Microsoft basic data /dev/mmcblk1p7 65536 131071 32M Microsoft basic data /dev/mmcblk1p8 131072 3276799 1.5G Microsoft basic data /dev/mmcblk1p9 3276800 4849663 768M Microsoft basic data /dev/mmcblk1p10 4849664 7634910 1.3G Microsoft basic data