我有一張 64GB SanDisk SD 卡,無法以任何形式寫入。檔案操作(exFat 檔案系統)和分割表操作(建立新分割表等)都沒有任何效果。但是,奇怪的是,也沒有出現錯誤訊息(無論是在文件管理器中還是在終端機中)。相反,每項更改看起來都很好,但一旦設備被移除,就會丟失。嘗試過 gparted,也分開,同樣的行為。 Dmesg 沒有提到任何可疑的事情:
[ 1745.157286] usb 2-1: new high-speed USB device number 11 using ehci-pci
[ 1745.297481] usb-storage 2-1:1.0: USB Mass Storage device detected
[ 1745.301922] scsi host1: usb-storage 2-1:1.0
[ 1746.437194] scsi 1:0:0:0: Direct-Access Multiple Card Reader 1.00 PQ: 0 ANSI: 0
[ 1747.215991] sd 1:0:0:0: [sdb] 124735488 512-byte logical blocks: (63.9 GB/59.5 GiB)
[ 1747.217152] sd 1:0:0:0: [sdb] Write Protect is off
[ 1747.217165] sd 1:0:0:0: [sdb] Mode Sense: 03 00 00 00
[ 1747.218239] sd 1:0:0:0: [sdb] No Caching mode page found
[ 1747.218253] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[ 1747.227264] sdb: sdb1
[ 1747.231661] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 1758.281234] usb 2-1: USB disconnect, device number 11
SD 卡上的寫入鎖定開關處於關閉狀態。打開後,parted 會將磁碟識別為唯讀,因此它似乎可以工作。
有進一步診斷的想法嗎?