emmc自带的boot分区如何屏蔽

123_P909d

飞牛系统是安装在一块16g的板载emmc硬盘上，硬盘信息里面会显示emmc自带boot0和boot1分区，如何屏蔽这两个分区让它们不显示在硬盘信息里面

我尝试写udev规则来屏蔽这两个分区，但是没有有效果，ATTR{hidden}这个属性是只读的，无法修改

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udevadm info -a /dev/mmcblk0boot0
looking at device '/devices/pci0000:00/0000:00:1a.0/mmc_host/mmc0/mmc0:0001/block/mmcblk0/mmcblk0boot0':
    KERNEL=="mmcblk0boot0"
    SUBSYSTEM=="block"
    DRIVER==""
    ATTR{alignment_offset}=="0"
    ATTR{capability}=="0"
    ATTR{discard_alignment}=="0"
    ATTR{diskseq}=="2"
    ATTR{events}==""
    ATTR{events_async}==""
    ATTR{events_poll_msecs}=="-1"
    ATTR{ext_range}=="1"
    ATTR{force_ro}=="1"
    ATTR{hidden}=="0"
    ATTR{inflight}=="       0        0"
    ATTR{integrity/device_is_integrity_capable}=="0"
    ATTR{integrity/format}=="none"
    ATTR{integrity/protection_interval_bytes}=="0"
    ATTR{integrity/read_verify}=="0"
    ATTR{integrity/tag_size}=="0"
    ATTR{integrity/write_generate}=="0"
    ATTR{mq/0/cpu_list}=="0, 1, 2, 3"
    ATTR{mq/0/nr_reserved_tags}=="0"
    ATTR{mq/0/nr_tags}=="16"
    ATTR{partscan}=="0"
    ATTR{power/async}=="disabled"
    ATTR{power/control}=="auto"
    ATTR{power/runtime_active_kids}=="0"
    ATTR{power/runtime_active_time}=="0"
    ATTR{power/runtime_enabled}=="disabled"
    ATTR{power/runtime_status}=="unsupported"
    ATTR{power/runtime_suspended_time}=="0"
    ATTR{power/runtime_usage}=="0"
    ATTR{queue/add_random}=="0"
    ATTR{queue/chunk_sectors}=="0"
    ATTR{queue/dax}=="0"
    ATTR{queue/discard_granularity}=="4194304"
    ATTR{queue/discard_max_bytes}=="116391936"
    ATTR{queue/discard_max_hw_bytes}=="116391936"
    ATTR{queue/discard_zeroes_data}=="0"
    ATTR{queue/dma_alignment}=="511"
    ATTR{queue/fua}=="1"
    ATTR{queue/hw_sector_size}=="512"
    ATTR{queue/io_poll}=="0"
    ATTR{queue/io_poll_delay}=="-1"
    ATTR{queue/io_timeout}=="60000"
    ATTR{queue/iosched/async_depth}=="24"
    ATTR{queue/iosched/fifo_batch}=="16"
    ATTR{queue/iosched/front_merges}=="1"
    ATTR{queue/iosched/prio_aging_expire}=="10000"
    ATTR{queue/iosched/read_expire}=="500"
    ATTR{queue/iosched/write_expire}=="5000"
    ATTR{queue/iosched/writes_starved}=="2"
    ATTR{queue/iostats}=="1"
    ATTR{queue/logical_block_size}=="512"
    ATTR{queue/max_discard_segments}=="1"
    ATTR{queue/max_hw_sectors_kb}=="512"
    ATTR{queue/max_integrity_segments}=="0"
    ATTR{queue/max_sectors_kb}=="512"
    ATTR{queue/max_segment_size}=="65536"
    ATTR{queue/max_segments}=="128"
    ATTR{queue/minimum_io_size}=="512"
    ATTR{queue/nomerges}=="0"
    ATTR{queue/nr_requests}=="32"
    ATTR{queue/nr_zones}=="0"
    ATTR{queue/optimal_io_size}=="0"
    ATTR{queue/physical_block_size}=="512"
    ATTR{queue/read_ahead_kb}=="128"
    ATTR{queue/rotational}=="0"
    ATTR{queue/rq_affinity}=="1"
    ATTR{queue/scheduler}=="none [mq-deadline] "
    ATTR{queue/stable_writes}=="0"
    ATTR{queue/virt_boundary_mask}=="0"
    ATTR{queue/wbt_lat_usec}=="2000"
    ATTR{queue/write_cache}=="write back"
    ATTR{queue/write_same_max_bytes}=="0"
    ATTR{queue/write_zeroes_max_bytes}=="116391936"
    ATTR{queue/zone_append_max_bytes}=="0"
    ATTR{queue/zone_write_granularity}=="0"
    ATTR{queue/zoned}=="none"
    ATTR{range}=="256"
    ATTR{removable}=="0"
    ATTR{ro}=="1"
    ATTR{ro_lock_until_next_power_on}=="0"
    ATTR{size}=="8192"
    ATTR{stat}=="     147        0     1672      127        0        0        0        0        0      128      127        0        0        0        0   >
    ATTR{trace/act_mask}=="disabled"
    ATTR{trace/enable}=="0"
    ATTR{trace/end_lba}=="disabled"
    ATTR{trace/pid}=="disabled"
    ATTR{trace/start_lba}=="disabled"

陈世阳

解决了吗，我也想屏蔽掉板载内存

123_P909d

没找到单独屏蔽分区的方法，可以直接把emmc都屏蔽了

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创建/etc/modprobe.d/emmc-blacklist.conf 文件，在里面写上

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blacklist sdhci_pci
blacklist mmc_block
blacklist cqhci
blacklist sdhci
blacklist mmc_core

hermes

你好，请问屏蔽emmc会对系统有影响吗

ꫛꫀꪝ 🇳

hermes 发表于 2025-4-10 15:21
你好，请问屏蔽emmc会对系统有影响吗

我也想知道，同样也被两个4M分区困扰

淡定_ZSOWk

我也是，安装到emmc上面，就有两个4mb空间，强迫症没法忍受

123_P909d

hermes 发表于 2025-4-10 15:21
你好，请问屏蔽emmc会对系统有影响吗

如果你的系统装在emmc硬盘上就不能屏蔽，如果没有的话没啥影响

hermes

123_P909d 发表于 2025-5-31 20:51
如果你的系统装在emmc硬盘上就不能屏蔽，如果没有的话没啥影响

也就是说我系统在硬盘，可以完美屏蔽掉emmc的ui显示对吧