weird hard disk error - ideas?

[b0fh666]

first time this happens - 2012 15" CMBP, disk is in the optibay (for years).

2/20/15 8:08:51.000 PM kernel[0]: disk4: no such device.
2/20/15 8:08:51.000 PM kernel[0]: disk4: no such device.
2/20/15 8:08:51.000 PM kernel[0]: jnl: disk4: do_jnl_io: strategy err 0x6
2/20/15 8:08:51.000 PM kernel[0]: jnl: disk4: write_journal_header: error writing the journal header!
2/20/15 8:08:51.000 PM kernel[0]: disk4: media is not present.

lots of repeated media not present messages then finally

2/20/15 8:08:52.000 PM kernel[0]: hfs: unmount initiated on Diamond XD on device disk4
2/20/15 8:08:52.000 PM kernel[0]: jnl: disk4: close: journal 0xffffff8042b3aa80, is invalid. aborting outstanding transactions


and the 'disk not ejected properly' message.

ideas? I was backing up a bunch of VMs to an external disk, but the failure was in the internal one.

failing HD, probably... how to check for that? working just fine after a reboot.

 

[Bomb Bloke]

Quite simply, the system is saying that it could no longer physically locate the drive holding the "Diamond XD" volume.

This could indicate a problem with the drive, or the cable connecting it, or the connectors attaching it, or the BUS... Usually a failing drive will start to generate I/O errors rather than simply "disappearing entirely", so I'd be more inclined to blame the leads.

 

[b0fh666]

banged up the laptop around, no issues. never had a prob with this optibay in years, so... dunno.

wondering if it is another yo-seh-mite bug, as the disks were transferring @ 60mbps-ish at the time it failed.

 

[yjchua95]

banged up the laptop around, no issues. never had a prob with this optibay in years, so... dunno.

wondering if it is another yo-seh-mite bug, as the disks were transferring @ 60mbps-ish at the time it failed.

Nah, it just happened to fail.

Such failures can have no symptoms, like your case. They just happen out of the blue.

 

[b0fh666]

oddly, it did not ever happened again. quite sure it was a software glitch.

yose mite eh.