How to spin off definitely hard drive

[Ed_P]

Is it useful only for next reboot or more over for this start?

It applies only to the current boot and I believe it clears the RAM Porteus will use. I think I had a booting bug years ago and was advised to use it to debug the problem and I've used it every since. Whether it's still needed I don't know.

There are other reboot options as this link shows: Re: Unable to reboot (Post by Michele13 #33069)

[benjibasson]

Hi,

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root@porteus:/home/guest# hdparm -B /dev/sda

/dev/sda:
 APM_level	= 128

hdparm -M doesn't help

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root@porteus:/home/guest# hdparm -M /dev/sda

/dev/sda:
 acoustic      = not supported

Do you remember witch commands tells what the system is doing (mecanicaly) on my sda drive?

[Ed_P]

Do you remember witch commands tells what the system is doing

Unfortunately I do not. I'm hoping an user with a better memory than mine, or more Linux experience than me, can enlighten us.

[benjibasson]

Hi, I have booted on safemode
each time the disk start I type dmesg and get

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[ 6039.363528] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 6039.364129] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845310] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845462] ata1.00: configured for UDMA/100

what does it mean?

every 600 secondes

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[ 5439.427189] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 5439.427745] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 5440.979228] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 5440.979935] ata1.00: configured for UDMA/100
[ 6039.363528] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 6039.364129] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845310] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845462] ata1.00: configured for UDMA/100
[ 6639.428290] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 6639.428892] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6640.979135] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6640.979366] ata1.00: configured for UDMA/100

cheers

[ncmprhnsbl]

archwiki for hdparm: https://wiki.archlinux.org/title/Hdparm
arch man page for hdparm: https://man.archlinux.org/man/hdparm.8
maybe:

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hdparm -B  (to get current powermanagement setting)
and if that shows a high number:
hdparm -B  <low number> (Values from 1 to 127 permit spin-down)

from man page:

-B Get/set Advanced Power Management feature, if the drive supports it. A low value means aggressive power management and a high value means better performance. Possible settings range from values 1 through 127 (which permit spin-down), and values 128 through 254 (which do not permit spin-down). The highest degree of power management is attained with a setting of 1, and the highest I/O performance with a setting of 254. A value of 255 tells hdparm to disable Advanced Power Management altogether on the drive (not all drives support disabling it, but most do).

or maybe something else on the man page.
be careful though, some commands can potentially damage the drive or filesystems on it !!

[benjibasson]

@ncmprhnsbl

I always keep default APM_level = 128
When I use Porteus in copy2ram I always spin down the/dev/sda with hdparm -y ou -Y

And in normal case/dev/sda doesn't rotate while I won't mount/dev/sdax neither attempt to access files system.
More over dmessg doesn't record any line after the 60 second in exception when I access sdax partition or when I switch on an usb device...

But on the Fujitsu laptop it is always starting /dev/sda every 600 second with 4 extra entry on dmessg

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[ 6039.363528] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 6039.364129] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845310] ata1.00: ACPI cmd f5/00:00:00:00:00:a0(SECURITY FREEZE LOCK) filtered out
[ 6040.845462] ata1.00: configured for UDMA/100

What does it mean ?

Why to link up ata1 sata and say security freeze lock only on Fujitsu laptop?