Hi Peter, Thanks for posting back that you were able to eventually “Repair the Backup Time Machine Drive’.
Where you then able to delete the backup that you thought had a problem? Or was it just an incomplete backup that perhaps was stopped by you before it completed? The Error message you were receiving “-50 (paramErr): Error in user parameter list” Indicates a 'File System Error' By Repairing the Drive it repairs the File System on the drive. Cheers, Ronni On 12/02/2011, at 1:18 PM, Peter Bull wrote: > > Thanks Ronni and Neil, > I shut down the Mac and after it restarted Disk Utility was able to repair > the disk. So it is now backing up quite happily!! > > > On 09/02/2011, at 2:51 PM, Neil Houghton wrote: > >> >> Hi Peter, >> >> In the past, I have had drives get "hung-up" and refuse to unmount >> (generally, I think, when OSX thought the drive was "in use" - but I >> couldn't find out what was supposed to be "using" it). >> >> In this case, I have found that shutting down the computer seems to "put >> everything to bed" and the disk is OK when the computer reboots. >> >> I realise that your situation is different and I don't know if it will help >> in your situation - but it might be worth a try (if you haven't already >> tried this). >> >> Of course, this would not solve your original problem - but, if the disk >> could now be mounted/unmounted, you could then proceed with Ronni's >> suggestions to sort out your TM problems. >> >> >> HTH >> >> >> >> Cheers >> >> >> >> Neil >> -- >> Neil R. Houghton >> Albany, Western Australia >> Tel: +61 8 9841 6063 >> Email: [email protected] >> >> >> >> >> on 9/2/11 2:06 PM, Peter Bull at [email protected] wrote: >> >>> >>> Hi Ronni, >>> I tried a couple of the things you suggested but kept getting a message that >>> the disk could not be unmounted and so the Repair Disk could not be done. >>> >>> So I decided that erasing and reformatting the disk was the only option, but >>> again it was not possible as it could not unmount the disk. >>> >>> Following a previous post of yours about deleting, I have not tried to >>> delete >>> by dragging the backups to the Trash. >>> >>> What's next?? >>> >>> Regards, >>> >>> Peter Bull >>> iMac 10.6.6 >>> >>> Windows 7 (also under sufferance!) >>> >>> >>> On 07/02/2011, at 7:36 PM, Ronda Brown wrote: >>> >>>> >>>> >>>> On 07/02/2011, at 6:48 PM, Peter Bull wrote: >>>> >>>>> >>>>> I have an external hard drive for backups and I think there is a problem >>>>> with a backup of a USB drive. I tried to delete so I could do another >>>>> backup >>>>> but I get an error message -50 which the Apple website translates as "-50 >>>>> paramErr Error in user parameter list". >>>>> >>>>> Time Machine also informs me that it can't do its hourly backup. >>>>> >>>>> Any ideas? >>>> >>>> Hi Peter, >>>> >>>> How did you try to delete the backup? You should never delete Time Machine >>>> backups by moving them to the Trash with Finder. >>>> They should only be deleted by using the Time Machine backup itself (enter >>>> Time Machine, select the backup, click the gear button, select "delete >>>> backup”. >>>> >>>> Otherwise our TM backups will corrupted. If they are you would need to >>>> reformat your Time Machine disk with Disk Utility and start over. >>>> >>>> But first: Try to “Repair the Backup Time Machine Drive >>>> <http://web.me.com/pondini/Time_Machine/A5.html> >>>> >>>> Time Machine won’t be able to do it’s hourly backup until you can repair >>>> the >>>> File System on the drive. >>>> >>>> >>>> Cheers, >>>> Ronni >>>> >>>> 17" MacBook Pro Intel Core i7 >>>> 2.66GHz / 8GB / 1067 MHz DDR3 / 500GB Serial ATA Drive @ 7200rpm >>>> >>>> OS X 10.6.6 Snow Leopard >>>> Windows 7 Ultimate (under sufferance) >>>> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Unsubscribe - <mailto:[email protected]>
