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products:sbc:vim-5:development:erase-emmc

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products:sbc:vim-5:development:erase-emmc [2026/09/15 02:51]
127.0.0.1 external edit 		products:sbc:vim-5:development:erase-emmc [2026/09/15 03:02] (current)
nick
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-====== VIM4 Erase eMMC ======+====== VIM 5 Erase eMMC ======
  
-There are three methods to erase the eMMC: +{{page>products:sbc:vim4:development:erase-emmc&noheader}}
- +
-  * Serial Mode (Developers) +
-  * Interrupt Mode +
-  * CLI Mode +
- +
-<tabbox Serial Mode (Developers)> +
- +
-  - Connect your PC to the SBC using a [[products:sbc:vim4:development:setup-serial-tool|Serial Debug Tool]]. +
-  - As the SBC is booting-up, press ''SPACE''on the keyboard to enter the U-Boot mode. +
-  - Type ''store boot_erase bootloader'' into the U-Boot console, and wait for the erasure process to complete. +
-  - After erasure is completed, type ''reboot'' or press the ''RESET'' button on your SBC. +
- +
-Use the following serial Terminal print-out as a reference: +
- +
-```shell +
-kvim4# store boot_erase bootloader +
-GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645 +
-GUID Partition Table Header signature is wrong: 0x0 != 0x5452415020494645 +
-gpt is invalid +
- +
- +
-Caution! Your devices Erase group is 0x400 +
-The erase range would be change to 0x0~0x23ff +
- +
-8191 blocks erased: OK +
- +
- +
-Caution! Your devices Erase group is 0x400 +
-The erase range would be change to 0x0~0x23ff +
- +
-8191 blocks erased: OK +
- +
- +
-Caution! Your devices Erase group is 0x400 +
-The erase range would be change to 0x0~0x23ff +
- +
-8191 blocks erased: OK +
-kvim4# reboot +
-``` +
- +
-If the eMMC has been erased, the serial Terminal should show this print-out when your SBC powers-on: +
- +
-```txt +
-T7:BL:055c20;ID:7CFDCF5E6052BDEC;FEAT:30F:1FFF0000:B002F:1;POC:CF;RCY:0;OVD:0;DFU:0;SD:2002;eMMC:0;RD-0:0;CHK:1;RD-1:0;CHK:1;RD-2:0;CHK:1;SPINOR:0;RD-0:0;CHK:1;RD-1:0;CHK:1;USB:ADFU�T7:BL:055c20;ID:7CFDCF5E6052BDEC;FEAT:30F:1FFF0000:B002F:1;POC:CF;RCY:0;OVD:0;DFU:1;USB:0;RD-00:0; +
-``` +
- +
-<tabbox Interrupt Mode> +
- +
-This erasure method is suitable for all products that use the Amlogic SoC: +
- +
-  - Carry out eMMC flashing via a [[products:sbc:vim4:install-os:install-os-into-emmc-via-usb-tool|USB-C cable]]. +
-  - Manually interrupt the upgrading process (forcefully disconnect after 15% is recommended). For example, unplug the USB-C cable or eject the TF card. +
-  - Power on your SBC again, and you'll find that all the data on the eMMC has been erased. +
- +
-<tabbox CLI Mode> +
- +
-This erasure method is suitable for the SBC with Linux installed: +
- +
-  - Power on and boot up. +
-  - Open a Terminal, and run ''dd'' to fill your bootloader partition with zeros: +
- +
-```sh +
-khadas@Khadas:~$ sudo dd if=/dev/zero of=/dev/bootloader +
-dd: writing to '/dev/bootloader': No space left on device +
-8193+0 records in +
-8192+0 records out +
-4194304 bytes (4.2 MB, 4.0 MiB) copied, 1.1226 s, 3.7 MB/s +
-root@Khadas:~# reboot +
-``` +
-</tabbox>+
Last modified: 2026/09/15 02:51 by 127.0.0.1

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