如何查看 macbook 磁盘 BTW

安装工具

$ brew install smartmontools

查看磁盘分区

$ diskutil list
/dev/disk0 (internal):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                         500.3 GB   disk0
   1:             Apple_APFS_ISC                         524.3 MB   disk0s1
   2:                 Apple_APFS Container disk3         494.4 GB   disk0s2
   3:        Apple_APFS_Recovery                         5.4 GB     disk0s3

/dev/disk3 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +494.4 GB   disk3
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            15.3 GB    disk3s1
   2:              APFS Snapshot com.apple.os.update-... 15.3 GB    disk3s1s1
   3:                APFS Volume Preboot                 221.2 MB   disk3s2
   4:                APFS Volume Recovery                1.0 GB     disk3s3
   5:                APFS Volume Data                    94.2 GB    disk3s5
   6:                APFS Volume VM                      1.1 GB     disk3s6

反正就这么一个盘，直接查设备就可以了：

$ smartctl -a /dev/disk0

输出

smartctl 7.2 2020-12-30 r5155 [Darwin 20.6.0 arm64] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number:                       APPLE SSD AP0512Q
Serial Number:                      abcdefg
Firmware Version:                   2.120.4
PCI Vendor/Subsystem ID:            0x106b
IEEE OUI Identifier:                0x000000
Controller ID:                      0
NVMe Version:                       <1.2
Number of Namespaces:               3
Local Time is:                      Mon Sep 13 22:21:52 2021 CST
Firmware Updates (0x02):            1 Slot
Optional Admin Commands (0x0004):   Frmw_DL
Optional NVM Commands (0x0004):     DS_Mngmt
Maximum Data Transfer Size:         256 Pages

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
 0 +     0.00W       -        -    0  0  0  0        0       0

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02)
Critical Warning:                   0x00
Temperature:                        36 Celsius
Available Spare:                    100%
Available Spare Threshold:          99%
Percentage Used:                    0%
Data Units Read:                    1,544,014 [790 GB]
Data Units Written:                 1,144,837 [586 GB]
Host Read Commands:                 23,670,787
Host Write Commands:                23,107,759
Controller Busy Time:               0
Power Cycles:                       160
Power On Hours:                     32
Unsafe Shutdowns:                   6
Media and Data Integrity Errors:    0
Error Information Log Entries:      0

Data Units Written 总写入量 586 GB，电脑用了大概两周。一切才刚刚开始。