[英]Mac OS High Sierra diskutil eraseDisk leads to Error: -69877: Couldn't open device
我在將新的 SanDisk 128GB microSD 卡從ExFAT
為FAT32
時遇到問題
$ diskutil info /dev/disk2
Device Identifier: disk2
Device Node: /dev/disk2
Whole: Yes
Part of Whole: disk2
Device / Media Name: Built In SDXC Reader
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)
File System: None
Content (IOContent): FDisk_partition_scheme
OS Can Be Installed: No
Media Type: Generic
Protocol: Secure Digital
SMART Status: Not Supported
Disk Size: 127.9 GB (127865454592 Bytes) (exactly 249737216 512-Byte-Units)
Device Block Size: 512 Bytes
Read-Only Media: Yes
Read-Only Volume: Not applicable (no file system)
Device Location: Internal
Removable Media: Removable
Media Removal: Software-Activated
Virtual: No
這是掛載的分區
$ diskutil info /dev/disk2s1
Device Identifier: disk2s1
Device Node: /dev/disk2s1
Whole: No
Part of Whole: disk2
Volume Name:
Mounted: Yes
Mount Point: /Volumes/Untitled
Partition Type: Windows_NTFS
File System Personality: ExFAT
Type (Bundle): exfat
Name (User Visible): ExFAT
OS Can Be Installed: No
Media Type: Generic
Protocol: Secure Digital
SMART Status: Not Supported
Volume UUID: 555AF300-2369-3CE8-B4E1-D8F976CE9C86
Partition Offset: 16777216 Bytes (32768 512-Byte-Device-Blocks)
Disk Size: 127.8 GB (127848677376 Bytes) (exactly 249704448 512-Byte-Units)
Device Block Size: 512 Bytes
Volume Total Space: 127.8 GB (127831900160 Bytes) (exactly 249671680 512-Byte-Units)
Volume Used Space: 393.2 KB (393216 Bytes) (exactly 768 512-Byte-Units) (0.0%)
Volume Free Space: 127.8 GB (127831506944 Bytes) (exactly 249670912 512-Byte-Units) (100.0%)
Allocation Block Size: 131072 Bytes
Read-Only Media: Yes
Read-Only Volume: Yes
Device Location: Internal
Removable Media: Removable
Media Removal: Software-Activated
首先我卸載:
$ diskutil unmountDisk /dev/disk2
Unmount of all volumes on disk2 was successful
然后我擦除磁盤並將其格式化為 FAT32
$ diskutil eraseDisk FAT32 NEW_NAME /dev/disk2
Started erase on disk2
Unmounting disk
Creating the partition map
Error: -69877: Couldn't open device
如何在不使用第三方應用程序的情況下擦除磁盤並將其格式化為FAT32
?
我發現我必須先卸載邏輯驅動器,然后才能刪除驅動器。
a) select 邏輯驅動器
b) 卸載
c) select硬盤
d) 擦除
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