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BootAble – FreeDOS boot testing freeware
To obtain direct, low-level access to a system's mass storage drives, SpinRite runs under a GRC-customized version of FreeDOS which has been modified to add compatibility with all file systems. In order to run SpinRite it must first be possible to boot FreeDOS.
GRC's “BootAble” freeware allows anyone to easily create BIOS-bootable media in order to workout and confirm the details of getting a machine to boot FreeDOS through a BIOS. Once the means of doing that has been determined, the media created by SpinRite can be booted and run in the same way.
The participants here, who have taken the time to share their knowledge and experience, their successes and some frustrations with booting their computers into FreeDOS, have created a valuable knowledgebase which will benefit everyone who follows.
You may click on the image to the right to obtain your own copy of BootAble. Then use the knowledge and experience documented here to boot your computer(s) into FreeDOS. And please do not hesitate to ask questions – nowhere else can better answers be found.
(You may permanently close this reminder with the 'X' in the upper right.)
Performed a secure erase on the SSD, which (from what I understand of SSD-aware secure erase utilities) causes the drive to do a quick voltage spike that clears all cells and resets them to a blank state.
ReadSpeed now shows:
542.7 / 542.6 / 542.7 / 542.6 / 542.5
Seems to support the idea that a SpinRite level 3 can make some regions appear slower since the drive now thinks there's data in those cells. After a secure erase the drive knows the cells are empty and instead of actually reading them it just spews zeros as fast as possible on the SATA interface.
ReadSpeed now shows:
542.7 / 542.6 / 542.7 / 542.6 / 542.5
Seems to support the idea that a SpinRite level 3 can make some regions appear slower since the drive now thinks there's data in those cells. After a secure erase the drive knows the cells are empty and instead of actually reading them it just spews zeros as fast as possible on the SATA interface.
It is Megabytes/second. In other words, this SSD is almost maxing out the 600Mbps SATA III connection.
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