This is for IDE drive cache control, same as SCSI (already documented
properly).
Reported-by: John Ekins
Discussion: https://postgr.es/m/
20170808224017[email protected]
Author: John Ekins
Backpatch-through: 12
On
FreeBSD, IDE drives can be queried using
- atacontrol and write caching turned off using
+ camcontrol identify and write caching turned off using
hw.ata.wc=0 in /boot/loader.conf;
SCSI drives can be queried using camcontrol identify,
and the write cache both queried and changed using