11. 從SD 卡啟動開發(fā)板 （必須WiFi支持）

　　遵循如下步驟從SD卡啟動板子。 這個設(shè)置也允許保存您的sketch到Galileo板子

　　斷電后，它可以重復(fù)的執(zhí)行 sketches（這些步驟創(chuàng)建一個持久的 /sketch 文件夾 和 rootfs.）

　　備注： 如果你想使用WIFI， 必須遵循這些步驟。因?yàn)閃IFI驅(qū)動文件太大所以Linux image沒有包含在

　　SPI flash中。 Linux SD image 包含在ALSA， V4L2， python， SSH， node.js， and openCV.

　　所需文件在 LINUX_IMAGE_FOR_SD_Intel_Galileo_v0.7.5.7z 壓縮文件中（下載鏈接請看章節(jié)2）。

　　Note： SD卡必須符合以下要求：

　　格式化成 FAT 或 FAT32.

　　SD卡小于 32GB.

　　1. 拷貝解壓文件到SD卡（解壓后330M）。如下圖，不要更改任何目錄

　　2. 插入SD卡到板子，然后接通電源。

　　備注： 首先可能花費(fèi)幾分鐘時間啟動板子。 這是一個預(yù)期的行為：由于 SSH 部件在您第一次啟動創(chuàng)建了密匙

　　排故障技巧：您可能需要在SD上增加一個啟動分區(qū)。 在PC上執(zhí)行如下步驟

　　用管理員權(quán)限打開 cmd.exe

　　Run diskpart.exe 運(yùn)行如下命令

　　select vol ; （where = the drive letter of the SD card）

　　These steps assume you have a microSD card inserted into the slot on the board，which contains the release-specific sysimage_nnnn.cap file and the CapsuleApp.efi file.

　　Caution： The CapsuleApp.efi and the *.cap file are a matched pair and must be used together. When a new *.cap file is released， you must use the corresponding CapsuleApp.efi to install it.

　　Perform the steps below：

　　1. Download the SPI flash image capsule files as described in Section 2.

　　2. Copy CapsuleApp.efi and sysimage_nnnnn.cap to a microSD card and insert it into the slot on the board.

　　3. Connect the serial cable between the computer and the Galileo board. Set up a serial console session （for example， PuTTY） and connect to the Galileo board’s COM port at 115200 baud rate.

　　4. Configure the serial console session to recognize special characters. For example，if you are using PuTTY， you must explicitly enable special characters. In the PuTTY Configuration options， go to the Terminal?> Keyboard category and set the Function keys and Keypad option to SCO.

　　5. Power on the board. A GNU GRUB boot loader menu is displayed （below）。Exit GRUB by entering c and quit as shown below.

Press c to get a command line.

　　At the GRUB command line， type quit.

　　6. The serial console displays a boot device selection box （below）。Select UEFI Internal Shell.

　　You will see a display similar to this：

　　7. You will see a print out， the top line of which looks like this：fs0 ：HardDisk - Alias hd7b blk0

　　This is your SD card. To mount it， type： fs0：

　　8. Verify you are using the correct version of CapsuleApp.efi by using the -v option. You must use version 1.01 or later.

　　9. Enter the following command：CapsuleApp.efi sysimage_nnnnn.cap

　　Note： You must enter the full filename of the sysimage_nnnnn.cap file.

　　You will see a display similar to this：

　　The CapsuleApp will update your SPI flash image. This process takes about 2 minutes.

　　Warning： DO NOT remove power or try to exit during this process. Wait for the prompt to return， otherwise your board will become non-functional.

　　10. When the update completes， reboot the board by removing and reconnecting the power cable. You will see a display similar to this：

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