ну да КТРЛ+Z одновременно и даже одной

Подразумевается комбинация клавишь Ctrl+Z

The On-Line commands may be initiated at any time. For the Interface-specific commands, the Interface code must be present in the current memory map for successful execution; the General commands are always available.
Interface-Specific Commands
Command Description Availability
Ctrl+E Interface State: Max C.H.S. / RW multiple block size / Current transfer mode settings B

Ctrl+F Read Segment Record(s) B
Ctrl+G Write Queue Dump B
Ctrl+I Controller Register Dump ** (See figure 2.1.7) B
Ctrl+K Reserved
Ctrl+Q Reserved
Ctrl+R Reserved. This command can only be used when the drive is spun down
Ctrl+S Snapshot current execution address B
Ctrl+V Interface Command Echo and Activity Trace Toggle B
Ctrl+X Interface and Niwot Command History ** (See figure 2.1.6) B
Ctrl+Y Display Raw SMART Values (used for computing SMART Attributes) B
‘~’ Interface Command State B