Flush Cache [E7H] - Hitachi DK23EB - Travelstar Series 20 GB Hard Drive Specifications

6.3.2.5.8 Flush Cache [E7h]

The Flush Cache command is to check the device if write cache data were written on the disk or not.
BSY is set until all write cache data are written on the disk or a write error is occurred. Maximum time to
write the cache data on the disk is 30 seconds.
Task File Registers
Command
Cylinder High
Cylinder Low
Device/Head
Sector Number
Sector Count
Features
DRV : Device selection bit
In case of Write Fault, the command is aborted and Status Register bit 5 DWF(Device Write Fault) is set to
one. For Device/Head Register bit 6 LBA=0(CHS mode), a logical CHS address, which had the first error
during write cache, is reported on Task File Register. For Device/Head Register bit 6 LBA=1(LBA mode), a
LBA address, which had the first error during write cache, is reported on Task File Register.
K6602743
Rev.2
02.12.'02
7 6 5 4
E7h
XX
XX
- X - DRV
XX
XX
XX
0 : DRV0
- 50 -
3 2 1 0
XX
1:DRV1