trouble installing ubuntu 11.04 because of GPT partition tables
I'm stuck at a point in the installation. It gives me a message that says:
Warning!
/dev/sda contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. Perhaps it was corrupted -- possibly by a program that doesn't understand GPT partition tables. Or perhaps you deleted the GPT table, and are now using an msdos partition table. Is this a GPT partition table?
When I click either of the two options, yes or no, it doesn't do anything. The installation is stalled. I'm installing it from a usb stick. I don't know what GPT means.. Should I reboot? What should I try. Thanks in advance
Question information
- Language:
- English Edit question
- Status:
- Answered
- For:
- Ubuntu ubiquity Edit question
- Assignee:
- No assignee Edit question
- Last query:
- 2011-05-12
- Last reply:
- 2011-05-15
| delance (olivier-delance) said : | #1 |
Today, 99% of PC uses a table partition standard named "DOS partition table". As you can guess, it's quite old, and was designed when OS used 10Mbytes hard drive. So a new standard was defined by Intel long time ago (but not as old as DOS!) which is better. This partition table is read bu BIOS at boot, so for backward compatibility, the GPT start with a fake DOS partition table to make old BIOS understanding it's not a real DOS partition table. The installer can't continue because it understand nothing on what is your disk, and can make serious damage to existing data. This GPT standard is used on Apple computers and from few times on some professional PCs.
Is this disk coming from a Mac or was it formated for a Mac ?
You can boot on Ubuntu CD, choose "Try", then System-
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