Hello Kate: I'm not Gordon but here is what I would suggest.
Boot from the ML stick, and if you only have 1 partition, interact with the table and choos disk utility. VO right to VO space on continue. Interact with the table to select your internal hard drive. Warning, do not choose the Macintosh HD, choose above that which usually is a bunch of numbers. Stop interacting, VO right to partition and VO space. Next choose OSX journaling, and make sure when you VO space on the combo box referring to partitioning, don't choose but instead choose 1 partition. You also can name the untitled to Macintosh HD. When the above is complete, go to option making sure it's set to GUID or something like that. After you go to ok, then you want to apply. This is how I installed ML but of course I had a TimeMachine backup from Lion. It sounds like a lot to go through but you can partition the hard drive in minutes comparing to erase a volume which may take hours. I'm assuming you know how to start when you boot from the ML USB stick. Hope this helps and write if I might have missed something John On Sep 7, 2012, at 6:14 PM, Cait Furness <[email protected]> wrote: > Ok, Gordon, that's what I was beginning to suspect. I've already done a > repair permissions twice. > > I'm running mountain lion now, how would I go about reinstalling it from > scratch, please? Mark made us a usb stick with ml on it > On 2012-09-04, at 2:05 PM, Gordon Smith <[email protected]> wrote: > >> Hi Cait >> >> This sounds like a pretty nasty systemic permissions issue. I really would >> suggest that you back up everything important on to external media as >> quickly as you can. You may well end up having to reinstall from scratch, or >> from a backup. >> >> Gordon >> >> On 4 Sep 2012, at 18:59, Cait Furness <[email protected]> wrote: >> >> Hi, >> Lately whenever I try to delete items from the trash in mail, on my mac as a >> whole, or whenever I try to move items from my external drive onto my hard >> disk, I get a dialog which says the operation can't be completed and it's an >> error -50 and an ok button. How do I fix this, please? >> >> thanks, >> Caitlyn >> >> <--- Mac Access At Mac Access Dot Net ---> >> >> To reply to this post, please address your message to >> [email protected] >> >> You can find an archive of all messages posted to the Mac-Access forum at >> either the list's own dedicated web archive: >> <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> >> or at the public Mail Archive: >> <http://www.mail-archive.com/[email protected]/>. >> Subscribe to the list's RSS feed from: >> <http://www.mail-archive.com/[email protected]/maillist.xml> >> >> The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus >> and worm-free! >> >> Please remember to update your membership options periodically by visiting >> the list website at: >> <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> >> >> <--- Gordon Smith ---> >> >> This message was written using 100 Percent recycled electrons. >> >> [email protected] >> >> Follow us on Twitter: @maciosaccess >> >> <---> >> >> >> >> >> >> <--- Mac Access At Mac Access Dot Net ---> >> >> To reply to this post, please address your message to >> [email protected] >> >> You can find an archive of all messages posted to the Mac-Access forum at >> either the list's own dedicated web archive: >> <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> >> or at the public Mail Archive: >> <http://www.mail-archive.com/[email protected]/>. >> Subscribe to the list's RSS feed from: >> <http://www.mail-archive.com/[email protected]/maillist.xml> >> >> The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus >> and worm-free! >> >> Please remember to update your membership options periodically by visiting >> the list website at: >> <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> > > <--- Mac Access At Mac Access Dot Net ---> > > To reply to this post, please address your message to > [email protected] > > You can find an archive of all messages posted to the Mac-Access forum at > either the list's own dedicated web archive: > <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> > or at the public Mail Archive: > <http://www.mail-archive.com/[email protected]/>. > Subscribe to the list's RSS feed from: > <http://www.mail-archive.com/[email protected]/maillist.xml> > > The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus and > worm-free! > > Please remember to update your membership options periodically by visiting > the list website at: > <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> > <--- Mac Access At Mac Access Dot Net ---> To reply to this post, please address your message to [email protected] You can find an archive of all messages posted to the Mac-Access forum at either the list's own dedicated web archive: <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> or at the public Mail Archive: <http://www.mail-archive.com/[email protected]/>. 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