On Tue, Mar 25, 2014 at 3:41 PM, George N. White III <[email protected]>wrote:
> On Tue, Mar 25, 2014 at 1:14 PM, Jeff Weinberger > <[email protected]>wrote: > >> Hi: >> >> My Time Machine backup started failing yesterday. After playing around >> with the sparse disk image file (OK, really just trying to move it to a >> different folder to try starting a new backup from scratch - the move >> failed), I suspect that there may be something wrong with the disk image. >> > > Unless you have good reason to think the disk is OK (e.g., there has been > no mechanical shock to the disk and the backup problems started after a > system crash, or after a power outage and the system isn't on a UPS) you > should assume the hard disk or (for external disks) the disk power supply, > is failing. Any additional writes to a failing disk are likely to make > things worse, so your first move should be get a backup on a disk your > trust. To rescue your old backups you should copy the image to a disk you > trust, mount the image, and then run disk repair. > > In general, I don't waste time on out-of-warranty disks that give > problems. I had too many experiences where a disk gives a problem but > passes vendor diagnostics and seems to be OK for a few weeks or even months > but then goes completely dead. > > I also tried to mount the disk image directly, which partially failed. It >> never showed up in the finder, but when I tried to back up again, it told >> me the image was in use. >> >> I also could not delete the disk image (I left the deleting progress bar >> for about 14 hours...). >> >> Can anyone give me some advice about how to repair a corrupted disk >> image, if this is possible? >> >> Also, if the issue is the time capsule disk, can anyone give me any >> advice about checking/repairing a time capsule disk? >> > > Under warranty, contact Apple. Out of warranty, there are lots of web > pages devoted to replacing TC disks. > > >> Or, am I completely missing something? >> > > There may be useful information the system logs. There is > http://support.apple.com/kb/ht4522 on > using Airport to check S.M.A.R.T status on Airport Time Capsule drives. > In > https://discussions.apple.com/thread/4045518 there is description of the > checks done automatically > for Airport Disks as well as the incantation to run checks manually. > The SMART status check is on Airport 5.6 - it is no longer there in 6.3 :( I had already restarted, but tried again to no avail. Thanks for the suggestions. > > Power supply failures: > http://www.theguardian.com/technology/blog/2009/nov/04/apple-time-capsule-failures-early. > > > > > >> >> Thank you in advance for any help, suggestions or advice! >> >> Jeff >> >> _______________________________________________ >> MacOSX-talk mailing list >> [email protected] >> http://www.omnigroup.com/mailman/listinfo/macosx-talk >> >> > > > -- > George N. White III <[email protected]> > Head of St. Margarets Bay, Nova Scotia >
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