Formatting Internal HDD on Snow Leopard

Markleshark

macrumors 603
Original poster
Aug 15, 2006
6,240
0
Carlisle, Up Norf!
Afternoon all,

I noticed this morning my internal 1TB HDD I use for my Time Machine backups had disappeared from Finder, tried formatting/First Aid and I get the following error

Disk Utility said:
Disk Erase failed with the error:

POSIX reports: The operation couldn’t be completed. Cannot allocate memory
Tried the fixes on MacFixIt but I get the following errors in Terminal

Terminal said:
Started erase on disk1
Unmounting disk
Erasing
newfs_hfs: write (sector 0): Cannot allocate memory
Mounting disk
Could not mount disk1 with name (null) after erase
Error: -9944: File system formatter failed
Mark-Nicholsons-Mac-Pro:~ markleshark$
andddddd

Terminal said:
fdisk: /dev/disk1: Permission denied
Any ideas? Could really do without the drive being cooked.

Thanks,
Mark.
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,164
581
Finland
Have you booted from the install disk and tried its Disk Utility? Have another computer to try it with?
 

Markleshark

macrumors 603
Original poster
Aug 15, 2006
6,240
0
Carlisle, Up Norf!
Nothing important, it's just my Time Machine backup drive, just means I'm currently running without a backup. I'll try a different SATA port tomorrow.
 

InfinitEnd

macrumors newbie
Oct 21, 2015
1
1
Yeah, I know. It's been an expensive few months, so it's £50 I could have done without spending. However, you are right, it's not exactly earth shattering.
I know this post is old but I was having the same problem with my 2009 MBP and thought others may be too. Orignal HD quit and I couldn't boot under any mode. Oddly enough when I disconnected the HD and plugged it back in, it fully booted before crashing, then back to the original failure to boot every time after. I bought and installed a new SSD but wasn't able to format/erase due to the same "cannot allocate memory" error using Disk Utility or Terminal. After playing with the SATA cable a bit just to make sure it had good connections I was able to format the drive and install 10.6 with no problems. I think that would explain why unplugging the original HD and plugging it back in allowed it to boot once. It's been a day since I installed OSX on the new SSD and I haven't had any problems. I'm going to replace the SATA cable just to be sure, but I think this may be the problem for others with older MBPs who are trying install a new drive.

If you're having this problem trying formatting the new HD via a USB/SATA cable (instead of in your macs HD bay) before you return the drive or give up. Worst case you'll rule out the SATA connection, but this worked for me.
 
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