Small backstory: I'm defragmenting a Mountain Lion partition of around 400 GB from a Yosemite partition of around 100GB - both partitions are on the same drive, but the ML one has been running slowly and the ridiculous level of volume fragmentation has finally explained why (get this - 92 GB free space, largest contiguous block is 325MB... Thanks a lot, Apple "macs don't need to be defragmented" tech support ![:D]( ":D")
![:D]( ":D")
![:D]( ":D")
Anyway I'd like to surface scan this drive, because I began volume optimization more than 36 hours ago and it's only about 43% complete. Now before anyone says anything, I'm NOT going to abort this job because I can see that it is actually progressing, I'm very confident in TTP's abilities from past experience, and I'm a stubborn fecker who won't surrender to my robot overlord just yet![;)]( ";)")
But the slow speed of this does make me wonder if there are dodgy blocks making the issue worse. Now I should point out that I *think* the issue here is the ratio of fragmented files to free space - 92GB free but also apparently 90GB worth of fragmentation in just 88 files (I'm guessing standard definition DVD rips, usually 4GB each, are the culprits here) - so maybe it's no surprise that it's going to take a few days to complete this job. But it has spooked me a little so I'd like to be absolutely sure there aren't any dangerous drive problems going on as well.
I don't currently have an external drive big enough to create an edrive from this mac (I have 8 GB memory, so the resulting eDrive would have to be at least 12GB and I think even more than this if I remember correctly) - is it possible to run a surface scan of this drive from a partition on the drive, or at least to just scan the partition I'm not currently booted from? I'm aware that a surface scan ignores partitions so really this comes down to whether a drive needs to be entirely unmounted in order to be scanned - anyone know if this can be done?
I'll get myself a new external HD in a week or so if I must, but I'm a little impatient so if I can run the surface scan as-is once this volume optimise is finished, I'd like to know. Cheers!
Anyway I'd like to surface scan this drive, because I began volume optimization more than 36 hours ago and it's only about 43% complete. Now before anyone says anything, I'm NOT going to abort this job because I can see that it is actually progressing, I'm very confident in TTP's abilities from past experience, and I'm a stubborn fecker who won't surrender to my robot overlord just yet
But the slow speed of this does make me wonder if there are dodgy blocks making the issue worse. Now I should point out that I *think* the issue here is the ratio of fragmented files to free space - 92GB free but also apparently 90GB worth of fragmentation in just 88 files (I'm guessing standard definition DVD rips, usually 4GB each, are the culprits here) - so maybe it's no surprise that it's going to take a few days to complete this job. But it has spooked me a little so I'd like to be absolutely sure there aren't any dangerous drive problems going on as well.I don't currently have an external drive big enough to create an edrive from this mac (I have 8 GB memory, so the resulting eDrive would have to be at least 12GB and I think even more than this if I remember correctly) - is it possible to run a surface scan of this drive from a partition on the drive, or at least to just scan the partition I'm not currently booted from? I'm aware that a surface scan ignores partitions so really this comes down to whether a drive needs to be entirely unmounted in order to be scanned - anyone know if this can be done?
I'll get myself a new external HD in a week or so if I must, but I'm a little impatient so if I can run the surface scan as-is once this volume optimise is finished, I'd like to know. Cheers!