Date: Sun, 21 Dec 2003 00:04:44 -0800 (PST) From: David Chien <[EMAIL PROTECTED]> Subject: Fwd: Hitachi 7K60 hard disk LED continuously on
--- Philip Nienhuis <[EMAIL PROTECTED]> wrote: > Date: Sun, 21 Dec 2003 00:14:39 +0100 > From: Philip Nienhuis <[EMAIL PROTECTED]> > To: David Chien <[EMAIL PROTECTED]> > Subject: Hitachi 7K60 hard disk LED continuously on > > Dear David, > > would you please forward it to the Libretto mailing list (I haven't been > able to subscribe yet). > > =============================================================================================== > > Hi all, > > Recently I bought a Hitach 7K60 60 GB hard disk (8 MB cache, 7200 rpm) > and put it in my Libretto 110CT. > Works great. Windows 2000, Linux and OS/2 are quite a bit snappier than > with 4200 rpm drives I used before. > > Only annoyance is that the HD LED is on continuously, like a few other > people reported on this list. Not much of an annoyance, but sometimes I > do very much like to know whether the system is hanging or that there is > just a lot of HD activity going on behind the scene. > > I emailed Hitach about it and they answered: > > <quote> > The drive activity LED may, on some systems, stay on constantly with > the > newest 2.5" drives. > > This is caused by the motherboard LED circuitry not being designed > correctly making it unable to properly detect the correct voltage of > the > drive. Mobile drives are moving to using 3.3 volts on the interface > lines > (from 5 volts on previous models) to reduce power consumption. > Systems > should be able to properly detect the lower 3.3 volts according to > the ATA > specification. > > If the system is unable to properly detect the correct voltage of > the > mobile drive, it will cause the drive activity light to stay on > constantly. > > This is NOT a problem caused by the drive. > > This is the result of the laptop not being fully ATA compliant in > accordance with the power specifications. This will not hurt the > drive or > the system in any way. > </quote> > > Right. Too bad that only the DASP (Disk Access Slave Present) line is > badly decoded, as all other lines seem to work OK -- obviously, as the > drive works correctly in all other respects. > > So, I'd like to try my luck here: > Would anybody know a fix, e.g. pull-up resistors and/or diodes on the > DASP line to make the Libretto believe that the signal is (close to) 5 V > rather than 3.3 V if there is no disk activity? > I guess (as an earlier poster wrote) that there is not much room around > the IDE connector, but low-power resistors and diodes don't need much > space. > > TIA, > > Philip ===== adorable toshiba libretto The latest news and information for the Toshiba Libretto owner. http://www.silverace.com/libretto/ __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
