Article View: comp.sys.mac
Article #13161Re: VANISHED! 12 Mb on a 80 Mb Hard Disk
From: SKG102
Date: Fri, 27 Jul 1990 15:25
Date: Fri, 27 Jul 1990 15:25
22 lines
1920 bytes
1920 bytes
I had a similar problem when someone unpluuged my Mac during a multiple file
transfer. I was downloading 2 Megs. of files when the machine was unplugged
and it was almost finished. Anyway, when the Mac was restarted the finder
showed only 2 Megs. of space left on the hard disk, which is about what should
have been left had the transfer completed but none of the files that I
downloaded were anywhere to be found on the disk. I believe the problem is that
the volume bitmap which shows which sectors are used and which are not is
updated at the same time the sector is used but the directory is only updated
at certain times, like the way a file may not be completely written to disk
until certain routines are called. I had 2 Megs. of disk space missing.
What I did was this. I have a tape backup so I made a total backup of the disk.
I didn't pay much attention to the file sizes during the backup. After the
backup completed, I reformatted the disk and restored all the files. After the
restoration was complete I had over 10 Megs. of free space on the hard disk.
Not only did I get the 2 Megs. I knew I was missing plus another 6 I didn't.
I know do this about once a month to keep from losing the space and to keep
fragmentation down
Scott George
SKG102@psuvm.psu.edu
SKG102@psuvm.BITNET
Technical Details
Message-ID:
<90208.112559SKG102@psuvm.psu.edu>Path:
arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!uwm.edu!psuvax1!psuvm!skg102References:
<1990Jul24.202754.13288@usenet.ins.cwru.edu> <3022@medusa.informatik.uni-erlangen.de> <1990Jul26.133922.17987@cec1.wustl.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!uwm.edu!psuvax1!psuvm!skg102 From: SKG102@psuvm.psu.edu Newsgroups: comp.sys.mac,comp.sys.mac.hardware,comp.sys.mac.misc Subject: Re: VANISHED! 12 Mb on a 80 Mb Hard Disk Message-ID: <90208.112559SKG102@psuvm.psu.edu> Date: 27 Jul 90 15:25:59 GMT References: <1990Jul24.202754.13288@usenet.ins.cwru.edu> <3022@medusa.informatik.uni-erlangen.de> <1990Jul26.133922.17987@cec1.wustl.edu> Organization: Penn State University Lines: 22