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BEWARE OF BAD HUBS
Well, today I encountered something new... a bad USB hub, with consequences... ;P
One of my customers has an old 15 year old MacAlly powered usb 1 hub that seems to have gone bad: ... The first clue was inability to print, then upon rebooting the mouse/keyboard combo would not intitiate. Worst of all, the External Drive began connecting and disconnecting over and over.
After sussing out that the hub failure was likely, I bought a replacement... and when the system was all reconnected with the new one, it turns out one of the connection-drops to the external drive damaged a partition... on a new HD yet! And Mac's DriveUtil cannot repair it.
Luckily I have backups, and the main drive (also new) is intact... as well as the 2nd partition with the newest backups. However, the old file archives were on the 2nd partition, and that was nearly 5 days of transfer time since all it has is USB 1 ... ;/
At some point I may schedule restoring that, but for now it's now urgent.
Just.... beware of Bad Hubs.
One of my customers has an old 15 year old MacAlly powered usb 1 hub that seems to have gone bad: ... The first clue was inability to print, then upon rebooting the mouse/keyboard combo would not intitiate. Worst of all, the External Drive began connecting and disconnecting over and over.
After sussing out that the hub failure was likely, I bought a replacement... and when the system was all reconnected with the new one, it turns out one of the connection-drops to the external drive damaged a partition... on a new HD yet! And Mac's DriveUtil cannot repair it.
Luckily I have backups, and the main drive (also new) is intact... as well as the 2nd partition with the newest backups. However, the old file archives were on the 2nd partition, and that was nearly 5 days of transfer time since all it has is USB 1 ... ;/
At some point I may schedule restoring that, but for now it's now urgent.
Just.... beware of Bad Hubs.
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It can go bad and leave one scrambling to get things fixed.
Hope that you can get it sorted out there though.
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You don't want to try the OS' own utility for repair work, though - that's much more of a DiskWarrior thing. That saved my bacon way back, when I was experiencing weird system stalls now and then, including file corruption, which I eventually noticed seemed to be affecting particular bits across 32-bit words. (Turned out to be either the CPU daughtercard, or the SIMM on the underside thereof, not making perfect contact - just reseating everything resolved the issue) DW managed to fix the filesystem every time.