While macOS doesn't include a direct equivalent to Linux's hdparm, the system provides several powerful alternatives through both built-in tools and third-party solutions. The closest native commands are diskutil and ioreg, which offer varying levels of disk control.

For basic disk information, use diskutil info:

diskutil info disk0

To view advanced S.M.A.R.T. data (similar to hdparm -H):

diskutil info disk0 | grep -i smart
system_profiler SPSerialATADataType

For more hdparm-like functionality, consider these options:

• Smartmontools (brew install smartmontools)
• DriveDx (GUI application with advanced features)
• ATTO DiskBench (for performance testing)

Modern macOS systems use APFS, which requires different approaches than traditional HFS+. To check filesystem type:

diskutil apfs list
diskutil hfs list

Install smartmontools via Homebrew for detailed disk analysis:

brew install smartmontools
smartctl -a /dev/disk0

While not identical to hdparm -tT, you can use:

dd if=/dev/zero of=tempfile bs=1m count=1024 conv=notrunc

For more accurate results, consider specialized tools like Blackmagic Disk Speed Test.

To manage disk sleep settings (similar to hdparm -S):

sudo pmset -a disksleep 10

While macOS doesn't have a direct port of hdparm, several built-in and third-party tools can achieve similar functionality. The primary command-line utilities for disk management in macOS are:

diskutil
ioreg
system_profiler
nvram (for some SSD parameters)

To view basic disk information similar to hdparm -I:

diskutil info disk0
system_profiler SPSerialATADataType

For benchmarking similar to hdparm -Tt, use:

# Simple read test
time dd if=/dev/disk0 bs=1m count=1024 of=/dev/null

# More advanced benchmarking
sudo ioping -c 10 /dev/disk0

For more low-level control, you can use:

# View power management settings
sudo pmset -g

# Change disk sleep timer
sudo pmset -a disksleep 10

Several third-party tools provide hdparm-like functionality:

• Smartmontools: brew install smartmontools
• DriveDX: GUI tool for SSD/HDD monitoring
• Blackmagic Disk Speed Test: For performance benchmarking

To verify if TRIM is enabled (similar to hdparm's ATA commands):

# Check current status
system_profiler SPSerialATADataType | grep TRIM

# Enable TRIM (requires SIP disable)
sudo trimforce enable