I think that somehow the disc had set itself up as PC. I'm not sure how it managed to copy files yesterday, but anyhow, I just reformatted today and it is working. Luckily it was a new disc, so I could drag everything off it and then start copying back again.
Many thanks for the advice. Ranulph On 24 Jan 2013, at 08:32, Sam - MacAmbulance wrote: > Hi Ranulph > > If a drive has errors, the OS will mount it read only, try running Repair > Disk in Disk Utility on the drive. If that doesn't work, try erasing the disk > (if it's just holding backups). If it regularly develops errors, might be a > faulty drive. > > Regards > > Sam > MacAmbulance > Providing affordable Apple & PC services > > Sam Mullen > 07747 778022 > http://www.macambulance.co.uk > [email protected] > > > On 24 Jan 2013, at 07:19, Ranulph Glanville <[email protected]> wrote: > >> I got a seagate backup plus portable drive. >> >> Yesterday I could copy files to it. Today I can't. Looking at the >> permissions I seem only to have read permissions. There don't seem to be any >> other options. >> >> How can I get this disc so I can copy to it, again? >> >> Many thanks for thoughts, >> >> Ranulph >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Sussex Mac User Group" group. >> To post to this group, send an email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> Visit this group at http://groups.google.com/group/smug?hl=en-GB. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> > > > -- > You received this message because you are subscribed to the Google Groups > "Sussex Mac User Group" group. > To post to this group, send an email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > Visit this group at http://groups.google.com/group/smug?hl=en-GB. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "Sussex Mac User Group" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/smug?hl=en-GB. For more options, visit https://groups.google.com/groups/opt_out.
