No success freezing a drive. Might help with your problem. I wonder if the head has stuck to the rubber bump stop. Freezing might make it less gooey and let it free off. Or you could try this
https://hackaday.com/2015/10/13/macintosh-hard-drive-repair/ put you really should only open drives in a clean room... Dave G4UGM > -----Original Message----- > From: cctalk <[email protected]> On Behalf Of Bill Degnan via > cctalk > Sent: 07 September 2020 18:39 > To: [email protected]; Antonio Carlini <[email protected]>; General > Discussion: On-Topic and Off-Topic Posts <[email protected]> > Subject: Re: Clicking SCSI disks > > On Mon, Sep 7, 2020 at 12:57 PM Antonio Carlini via cctalk < > [email protected]> wrote: > > > I have a number of old (2000-era) DEC StorageWorks disks that fail to > > mount under VMS. They report MEDIUM OFFLINE. > > > > They power up in a similar way to other disks that do work, but they > > persistently click ina "something isn't right" manner. > > > > > > I've tried reorienting some of the disks to see if that makes any > > difference, and for the ones I've tried, it didn't help. > > > > > > I've read about the "freezer" trick, but mostly I've seen negative > > opinions. However, those opinions mostly come from data recovery > > specialists! > > > > > > So I thought I'd tap the wisdom of the list. Is there any way that > > people have used to successfully recover data from RZ28, RZ29 disks > > (which all worked in 2003 :-))? Has anyone tried freezing a double > > bagged drive? Was it successful? If so, how long did you freeze it for? > > These disks are in StorageWorks containers ... should I remove them > > before freezing? > > > > > > > Antonio, > If there is no stiction then tapping the disk or opening to spin the disk > manually does nothing useful IMHO other than expose the surface to dust. > It could be that you need a new controller, you could always try a transplant > of the controller electronics from one drive to another to dump the data. > Has to be the same type of drive, etc. It's all a percentages thing, you > might > save one out of 4 swapping around electronics. If you have nothing to lose > and you don't mind possibly making it worse ... > Bill
