Внешний диск (Останавливается)

[Alsarine]

Внешний диск Seagate. Установлена Ubuntu 10.04,до этого были Xubuntu и Lubuntu 10.10 Внешний диск во время работы отключается,останавливается,похоже в энергосберегающем режиме как если бы он просто был подключен. С разными дистрибутивами по разному,от 5 до 20-25 минут интервалы. Искал все по теме. К acpi не знаю как подойти,был совет сделать чтобы cron дергал какой нибудь файлик. Интересно что в Ubuntu 9.04 такого не было. Как исправить?

[LupoAlberto]

Попробуйте поэкспериментировать с параметрами -B и -S программы hdparm

...
-B Query/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 set‐
ting 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).
...
-S Put the drive into idle (low-power) mode, and also set the standby (spindown) timeout for the drive. This timeout value
is used by the drive to determine how long to wait (with no disk activity) before turning off the spindle motor to save
power. Under such circumstances, the drive may take as long as 30 seconds to respond to a subsequent disk access, though
most drives are much quicker. The encoding of the timeout value is somewhat peculiar. A value of zero means "timeouts
are disabled": the device will not automatically enter standby mode. Values from 1 to 240 specify multiples of 5 sec‐
onds, yielding timeouts from 5 seconds to 20 minutes. Values from 241 to 251 specify from 1 to 11 units of 30 minutes,
yielding timeouts from 30 minutes to 5.5 hours. A value of 252 signifies a timeout of 21 minutes. A value of 253 sets a
vendor-defined timeout period between 8 and 12 hours, and the value 254 is reserved. 255 is interpreted as 21 minutes
plus 15 seconds. Note that some older drives may have very different interpretations of these values.
...

[Alsarine]

С -B эксперементировать не стал,побаиваюсь.
Значение -S выставил 0 Если я правильно понял.

Не помогло. Какое же значение нужно? .
Все пробовал, -B и -S.