Intel Galileo gen2 motherboard experiment (1)
Intel Galileo gen2 motherboard specifications
Intel Galileo gen2 motherboard specifications
SD card startup disk making
- Software used: Win32DiskImager (for writing sd card image)， SD card image of Galileo Linux (an integrated Yocto based Linux, Galileo poky SW image 20160606. Zip);
- Extract Galileo ﹣ poky ﹣ SW ﹣ image ﹣ 20160606.zip on PC to generate iot-devkit-prof-dev-image-galileo-20160606.direct file;
- Insert SD card into computer with card reader;
- Install and run Win32DiskImager, enter the unzipped folder, select the file type as *. *, select the unzipped. direct file, and click write;
- At this time, the SD card boot disk is made successfully. After the SD card is inserted into the card slot on the Galileo board, power on will boot the system from the SD card by default
Expanding Linux root space
- View disk
root@galileo:~# fdisk -l Disk /dev/mmcblk0: 14.9 GiB, 16022241280 bytes, 31293440 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: dos Disk identifier: 0x55f2787e Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 2048 106495 52224 83 Linux /dev/mmcblk0p2 106496 3553279 1723392 83 Linux
- Divide unallocated disk space into new partitions
root@galileo:~# fdisk /dev/mmcblk0
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): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3): 3
First sector (3553280-31293439, default 3553280): 3553280
Last sector, +sectors or +size{K,M,G,T,P} (3553280-31293439, default 31293439): 31293439
Created a new partition 3 of type 'Linux' and of size 13.2 GiB.
- Enter P to see that the new partition / dev/mmcblk3 has been generated
Command (m for help): p Disk /dev/mmcblk0: 14.9 GiB, 16022241280 bytes, 31293440 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: dos Disk identifier: 0x55f2787e Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 2048 106495 52224 83 Linux /dev/mmcblk0p2 106496 3553279 1723392 83 Linux /dev/mmcblk0p3 3553280 31293439 13870080 83 Linux
- Enter the command w to save the settings and exit
Command (m for help): w
- Restart the operating system to reload the partition table
root@galileo:~# init 6
- Format the new partition
root@galileo:~# mkfs -t ext3 /dev/mmcblk0p3 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 868352 inodes, 3467520 blocks 173376 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=3552575488 106 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
- Success
root@galileo:~# df -lh Filesystem Size Used Avail Use% Mounted on /dev/root 1.6G 1.3G 218M 86% / devtmpfs 116M 0 116M 0% /dev tmpfs 116M 0 116M 0% /dev/shm tmpfs 116M 8.4M 108M 8% /run tmpfs 116M 0 116M 0% /sys/fs/cgroup tmpfs 116M 0 116M 0% /tmp tmpfs 116M 12K 116M 1% /var/volatile /dev/mmcblk0p1 50M 2.3M 47M 5% /media/card