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Disk Operating
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Ever wondered how to upgrade your hard disk to a larger one, say a 1TB or 2TB? For whatever reason you choose to upgrade your existing hard disk you need a way of taking the information from a previous installation and dumping it onto a new drive without the hassle of having to reload the operating system, reconfigure and reinstall drivers for all your devices, then reload the necessary programs, and then restore all your data that was setting on that old drive.
This article will provide a high level way of doing this. For this exercise you will need the following linux distro's, namely; CloneZilla and GPARTED live iso. Both can easily be obtained by doing a Google search. You will need two CDR's to burn each ISO.
Once these ISO's have been downloaded, burn them to disk. Once complete, shutdown your computer, install the 2nd drive along side the first one. Boot the computer using the CloneZilla disk, and when prompted to go to the "Shell", select this option.
This will take you to the command line prompt within the CloneZilla linux distro. At this prompt, type "sudo ddrescue /dev/sda /dev/sdb"
The SDA and SDB represent the first and second hard disk as installed. So make sure that your first (which is your old drive) is in your first SATA port, and that the 2nd drive is in the second SATA port. If not, reboot, repeating the boot up of CloneZilla.
The DDRESCUE command will take some time to process. The command copies byte for byte from the source drive to the target drive. This process copies everything including the boot sector, partitions, and data.
Once this process is complete, reboot and boot into the GPARTED live iso. GPARTED is a hard disk partition environment which will allow you to expand the operating system partition to maximise the full size of the new drive. Expand the new drive.
Once the expand of the partition has been complete, remove the old drive (if necessary ), or swop the sda/sdb around so that the bigger drive is your boot up drive in SATA port 1. Reboot your machine and you'll find that you've successfully cloned your system to a new drive without having to reload it.
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Data Recovery from Unusable DVD Disk in Mac
The DVD RAM refers to a DVD format, where you can constantly store and delete data. Such DVD disks can be used by most of the DVD RAM drive install Mac OS X computer. You can use Mac OS X to format the DVD RAM and write new data on it.
This is a new feature added in Mac OS X operating system. In some situations, you might come across some errors while trying to write data on the disks and the writing process fails. The error message shows that the disk can not be modified. In these cases, you are suggested to backup all of the critical data from disk as the solution might need to format the drive.
If you have not proper backup or the backup fails, you are required to opt for Mac Recovery solutions to get your mission critical data back.
In such situations, you can still read some of your data from the drive and copy the readable data to other drive, but you can not copy data to it. The error message you encounter is:
“The disc "Ram" could not be modified”
After this error message, all of the running process on this drive gets terminated and the drive becomes completely inaccessible.
Grounds of the issue
You might come across this error message and above mentioned behavior of Mac OS X due to the following reasons:
The DVD RAM is using UDF (Universal Disk Format) format
The DBD RAM disk caddy is incorrect
Nevertheless the cause of this issue, it is most important things to perform Mac Recovery by sorting out the issue.
Resolution
Depending upon the cause of the issue, you can go for below given solutions:
You need to make sure that the proper DVD Ram disk caddy is used. This should be the one, which is provided with your Mac OS X computer. Your disk should be in caddy to carry out any disk operation.
If this issue is due to the UDF format, you can format it to Mac OS X (HFS+ file system) to perform write operation. You can check out the disk format using File menu, Show Info in Finder.
You should completely backup all the data before formatting the hard drive, in the else case, you will lose of your mission critical data. In such situations, Mac Data Recovery comes for your help. This is best possible using Mac Recovery software that are completely safe and easy to use.
Stellar Phoenix Macintosh Data Recovery is the most effective tool to recover lost data from all sorts of storage devices. It Recovers data from HFS, HFS+, HFSX, HFS Wrapper and FAT file system volumes. This software is compatible with Mac OS X 105. 10.4 and Mac OS X 10.3.9.
About the Author
Allen a student of Mass Communication doing research on data recovery software. He is also a freelancer for http://www.stellarinfo.com
who invented the disk operating system for the computer?
I've heard in the past that bill gates bought dos from someone else as oppose to writing it himself?
Disk Operating System, abbreviated as DOS...some say it was Bill Gates(Microsoft), but he actually bought the system from some basement programmer for like 10 grand(QDOS). He then made some modifications and sold it as PC-DOS and then MS-DOS to IBM. He also stole some parts of it from Apple(Macs) as well. Truth is, there were several versions of DOS before Bill Gates took the scene. It's still a matter of controversy, but the primary inventor was probably Tim Paterson.
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