Disk1s2: i/o error

2015-03-28 Thread Michael
So my external 500 GB drive is giving me I/O errors. I'd like some advice, other than throw it away. In the past, when I had drives directly attached inside the computer, I could do a low-level format, and generally had good luck letting that solve errors. This is a USB drive. I don't know how

Re: Disk1s2: i/o error

2015-03-28 Thread Macs R We
Drive Genius has a “Scan” tool that destructively writes and reads every block on a drive, and will map all the bad blocks out (assuming any spares are still left). This may or may not solve your problem, depending on what your hardware problem actually is. The other bad news is that the

Re: Mounting a sparse bundle as read only?

2015-03-28 Thread @lbutlr
On Mar 27, 2015, at 21:33, Michael keybou...@gmail.com wrote: Is there a way to mount a sparse bundle as read only? keybounceMBP:~ michael$ mount -o ro /dev/disk3s2 mount: /dev/disk3s2: unknown special file or file system. keybounceMBP:~ michael$ mount -o ro /Volumes/Isolated\ old\