On Wednesday, 22 April 2020 13:34:10 BST [email protected] wrote: > Hi, > > In my system there is a 3T Winchester digital blue > > Model Number: WDC WD30EZRZ-00GXCB0 > Firmware Revision: 80.00A80 > > > I bougth a second one for backyp purposes > > Model Number: WDC WD30EZRZ-00Z5HB0 > Firmware Revision: 80.00A80 > > Looks pretty simiiar to me... > > The first one is in use for a month or so, I received > the second one just two hours ago. > > I want to disable the security feature and the spindown-if-idle > feature of the second drive as I did with the first. > > First step was to compare the output of 'hdparm -I <drive>' of the > first with that of the second one. > > Differences ( I will skip identical parts ): > > First: > Standards: > Used: unknown (minor revision code 0x006d) > Supported: 10 9 8 7 6 5 > Likely used: 10 > > Second: > Standards: > Supported: 9 8 7 6 5 > Likely used: 9 > > > > First: > Formfactor 3.5inch > > Second: > Not mentioned > > First > Commands/features: > Enabled Supported: > * DMA Setup Auto-Activate optimization > Device-initiated interface power management > * Software settings preservation > unknown 206[12] (vendor specific) > unknown 206[13] (vendor specific) > * DOWNLOAD MICROCODE DMA command > * WRITE BUFFER DMA command > * READ BUFFER DMA command > > Second: > Commands/features: > Enabled Supported: > DMA Setup Auto-Activate optimization > * SCT Write Same (AC2) > * SCT Features Control (AC4) > * SCT Data Tables (AC5) > unknown 206[12] (vendor specific) > unknown 206[13] (vendor specific) > unknown 206[14] (vendor specific) > > > > "DMA Setup Ayto-Activate optimization" is enable for the first drive, > for second one it is not. The section about this feature in the > manpage says "use with extreme caytion" and I cannot decide, whether > that what is written there is still valid or some sort of cry > from the past. > > I am unsure about to think about these differences...? > > The second thing are the security settings. I want drives with no > security settings and no way to manipulate them without user > interaction. I want these settings stored in the drive instead > of setting them at each boot since the second drive will be > temporarily used in a docking station "past boot". > > The current security settings for both drives are: > not enabled > not locked > frozen > not expired: security count > supported: enhanced erase > > (I have frozen the settings for the second drive just a minute ago and > it will forget the settings (going "not frozen" then) as soon I switch > the docking station off and on again.) > > If I remember correctly I did this for the frsit drive with: > freeze security setting > lock security settings > > and I did this without using any password. > > On the second drive "freeze" works as exspected, but "lock" > wants a password. > > After startpageing for a while I found a site with "Master passwords > for some drives"...and I am unsure of what I have found there > (reliability-wise ... it was not via the TOR network, though... ;) > > Currently there are no data on the second drive. So accidentally > wiping it off doesn't matter as long the drive remains intact. > > I would prefer to have both drives in the same state. > I didn't changed any DMA-related settings for the first drive by the > way. > > How should I handle the DMA differences between the frist and the > second drive? > > How can I handle the security issue with the second drive? > > Cheers! > Meino
Is the second drive connected to the same bus controller? If on a USB docking station hdparm may or may not be able to do what you want - have a look here: https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase
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