#disk-utility

How-to: How can I repair a disk that disk utility says it can't repair this disk? #solution #development #fix

How can I repair a disk that disk utility says it can’t repair this disk?

I have an external hard-disk with a single Mac OS Extended partition. This disk stopped working couple of days ago. I tried to repair the partition with disk utility but no luck. The error message is the following:

Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and…

Fix: How to resolve error: "Couldn't modify partition map because file system verification failed"? #it #answer #programming

How to resolve error: "Couldn’t modify partition map because file system verification failed"?

I upgraded to Lion and decided I no longer want 100 GB of my drive devoted to Boot Camp, I never boot into Windows, I just use it as a VM anyways. So I deleted the boot camp partition using disk utility and then attempted to expand the main partition to fill this now unallocated space. I also deleted…

Resolved: Mac OSX – Why is /dev/rdisk 20 times faster than /dev/disk #answer #development #programming

Mac OSX – Why is /dev/rdisk 20 times faster than /dev/disk

According to the rasbery pi documentation, You can load your OS to a flash card with either /dev/disk or /dev/rdisk.

rdisk stands for raw disk.

/dev/disk is a block level device, why would rdisk be 20 times faster?

Using Mac OSX

Note: In OS X each disk may have two path references in /dev: /dev/disk# is a buffered device, which means…

Resolved: How can I resolve the error "MediaKit reports partition (map) too small"? #computers #fix #answer

How can I resolve the error "MediaKit reports partition (map) too small"?

I am unable to expand my Mac’s hard disk. diskutility reports this error:

MediaKit reports partition (map) too small

How can I resolve this?

Answer [by Mike]: How can I resolve the error "MediaKit reports partition (map) too small"?

This blog post was the only way I found to solve it, and it’s not for the faint of heart.…

Answer: Cannot resize OS X partition #development #it #answer

Cannot resize OS X partition

I am trying to resize my existing Mac OS Extended partition on my Macbook to install Windows 7 (using steps similar to these), but when ever I go to apply the changes, I get this error:

Partition failed

Partition failed with the error: The partition cannot be resized. Try reducing the amount of change in the size of the partition.

The total capacity of the hard…

Fix: Fix bad blocks on Mac hard disk #development #programming #it

Fix bad blocks on Mac hard disk

I have a hard disk that I scanned with TechTool and it reports one bad block. As far as I can tell, TechTool only scans and reports a failure. It doesn’t fix anything.

Back in the day, Norton Disk Doctor did the job of scanning and flagging (remapping) bad blocks on the Mac. Today we have various tools for fixing up HFS+ directory errors (Disk Utility, fsck,…