Requirements
For a device to be compatible and useful, it must conform to these requirements:- The removable media's capacity must be at least 256 MB] (250 MB after formatting, Windows 7 reports in its Event Log a required minimum of 235 MB).
- Windows 7 allows up to eight devices for a maximum of 256 GB of additional memory, with up to 32 GB on a single storage device.
- The device must have an access time of 1 ms or less.
- The device must be capable of 2.5 MB/s read speeds for 4 KB random reads spread uniformly across the entire device, and 1.75 MB/s write speeds for 512 KB random writes spread uniformly across the device.
- Vista's ReadyBoost supports NTFS, FAT16 and FAT32 from SP1. Windows 7 also supports the newer exFAT file system. As the ReadyBoost cache is stored as a file, the flash drive must be formatted as NTFS or exFAT to allow a cache larger than the FAT32 filesize limit of 4 GB (or FAT 16's 2 GB)
- The ReadyBoost algorithm was improved in Windows 7, resulting in better performance. One experiment showed reading of flash memory up to 5-10 times faster than Windows Vista due to higher hit rate.
- Because ReadyBoost stores its cache as a file on the root directory of the drive, rather than using the flash memory without a file system, the file system must be mounted andassigned a drive letter. The ReadyBoost cache is created on the root directory of the drive.
- If the system drive (the primary drive, with Windows system files on it) is a solid-state drive (SSD), ReadyBoost is disabled, as reading from that drive would be at least as fast as reading from the ReadyBoost drive.
ReadyBoost is not available on Windows Server 2008.
INSTRUCTIONS ( to enable ready boost )
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